Where is the gap between domestic valves and European and American valves?

Where is the gap between domestic valves and European and American valves?

Although the valve is small, it plays a huge role.

In many fields, such as industrial production, urban construction, energy transmission, etc., although the valve seems unremarkable, it actually plays an indispensable key role. It is like a loyal "gatekeeper", precisely regulating the flow, pressure and direction of fluid, and ensuring the smooth and efficient operation of various systems.

In the petrochemical industry, the valve is an effective "assistant" to control all kinds of flammable, explosive and corrosive media. Special valves such as high-temperature and high-pressure ball valves and corrosion-resistant gate valves, like steel guards, closely control every move of the fluid to protect the safety in production. In the field of electric power industry, from boilers to steam pipes to cooling water systems, valves also shoulder heavy responsibilities. Especially in nuclear power plants, those valves with radiation protection, high pressure resistance and high temperature resistance are the core components to ensure the safe and stable operation of nuclear power units, and no mistakes are allowed.

In the urban water supply and water treatment system, butterfly valves, gate valves and ball valves can be seen everywhere. They silently adjust the water flow, ensure the stable supply of water for residents, and help sewage treatment meet the discharge standards, guarding the "lifeline" of the city. The food and pharmaceutical industry has extremely high requirements for hygiene standards, and sanitary ball valves and diaphragm valves have emerged as the times require. With their smooth surfaces and excellent sealing performance, they put an end to pollution and defend product quality and public health.


Where is the gap between domestic valves and European and American valves?


It is no exaggeration to say that valves are the basic support for the normal operation of modern society, and their quality is directly related to the production efficiency, safety level and even development prospects of all walks of life. Next, let's explore the differences in quality between domestic valves and European and American valves, and explore the road to forge ahead for domestic valves.

First, material technology: the foundation determines the height.

(A) material selection differences

Material is the foundation of valve quality. Developed countries in Europe and America have obvious advantages in the selection of valve materials by virtue of their profound industrial background and advanced technology. As far as the source is concerned, European and American valve enterprises cooperate closely with the world's top material suppliers, and can obtain high-quality and high-performance raw materials first, such as special alloy steel, high-performance plastics and new ceramics. The purity, uniformity and impurity content control of these materials are exemplary, laying a solid foundation for the excellent quality of valves.

On the other hand, in China, although the material industry has made great progress in recent years, some special materials needed for high-end valves, such as alloy steel with ultra-high temperature resistance and strong corrosion, still lag behind Europe and the United States in terms of quality stability and timeliness of supply. From the perspective of quality, European and American material standards are strict and implemented in place. Taking stainless steel as an example, the proportion of key alloy elements such as chromium and nickel is accurate, ensuring the durability and reliability of the material under complex working conditions. Domestic materials still have room for improvement in the control accuracy of similar elements and the removal of harmful impurities of trace elements.

The price factor should also not be underestimated. High-quality materials in Europe and America have high research and development costs and high quality control costs, and their prices remain high. Domestic materials benefit from the cost advantage and the price is close to the people, but it also reflects the gap of quality level to some extent. In the application field of high-end special materials, such as deep-sea oil and gas exploitation and valves used in nuclear industry, European and American valves are resistant to extremely high pressure, strong radiation and highly corrosive media with advanced materials, and have a long service life; The material adaptability and durability of domestic valves under such extreme working conditions need to be further polished, and it is urgent to strengthen R&D investment and improve material quality.

(B) manufacturing process gap

The manufacturing process is like a "skillful hand" who carefully carves the valve, directly carving out the quality details of the product. European and American valve manufacturers keep pace with each other in process inheritance and innovation, and the precision casting process is superb, which can cast a valve body with complex structure, accurate size and smooth surface, with almost no internal defects. For example, the precision of miniature precision valves in aerospace field can reach micron level, ensuring high precision of fluid control. Forging process is both rigid and flexible. Through precise control of hot working parameters, the valve parts are endowed with superior mechanical properties and high-strength stress impact resistance.

On the other hand, in China, the technological innovation of some valve enterprises lags behind, and traditional casting is prone to defects such as sand holes and air holes, which affect the strength and sealing of valve bodies; The equipment precision and process stability in forging process are insufficient, which causes the product quality to fluctuate greatly. In the machining process, European and American enterprises widely use advanced equipment such as multi-axis CNC machining center and high-precision grinder, and cooperate with intelligent tool path optimization software to realize one-time precision machining of complex surfaces and high-precision mating surfaces, and the dimensional tolerance is controlled within a very small range to ensure the smoothness and tightness of valve operation.

Although some domestic enterprises have introduced high-end equipment, there is a gap with Europe and America in programming precision, equipment maintenance proficiency and operator skill level, which leads to uneven machining accuracy. Moreover, the process cost is also a key variable. With the high R&D, equipment purchase and maintenance costs, the advanced technology in Europe and America is passed on to the product price. The domestic process cost is relatively low, but it is also necessary to weigh the quality and benefit, and explore the cost-effective process upgrade path to narrow the quality gap.

Second, quality control: details determine success or failure.

(1) Implementation of quality standards

Quality control is like a "frigate" to protect the quality of valves. In terms of standard compliance, European and American valve enterprises can be called "model students". Taking international authoritative standards such as API, ASME and DIN as examples, European and American enterprises not only strictly follow them, but also reserve sufficient safety margin in the design process by virtue of profound technical precipitation, and some key performance indicators far exceed the standard requirements, just like building a "super protective shield" to ensure the stable operation of the valve under extremely complicated working conditions.

On the other hand, in China, although most enterprises actively benchmark international standards, there is still a lack of implementation accuracy and depth. Limited by cost and technical bottleneck, some small enterprises have superficial understanding of standards, poor product consistency and stability, and obvious fluctuations in product quality in different batches. Moreover, international standards are frequently updated, and European and American enterprises rely on cutting-edge research and development and extensive international cooperation to respond quickly and integrate into new standards to ensure that products always stand at the forefront of quality; The information acquisition and technology transformation of domestic enterprises are relatively lagging behind, and it is easy to appear the embarrassing situation that the products have just reached the old standard and the new standard has been issued, and they are passive in the international high-end market competition.

(2) Means of quality inspection

In the "field" of quality inspection, European and American valve enterprises are well equipped. Advanced hot and cold experimental equipment is available to simulate the performance of valves under various extreme working conditions such as high temperature, high pressure, low temperature and corrosion, and accurately capture potential problems; High-precision coordinate measuring instrument and laser measuring technology control the dimensional accuracy of the valve at micron level to ensure the perfect cooperation of parts; Complete flaw detection equipment, such as ultrasonic flaw detection and X-ray flaw detection, "perspective scan" the key parts such as valve body and weld, and never let go of any subtle defects.

Data management is even more subtle. With the help of Industry 4.0 technology, the whole production process data is collected, stored and analyzed in real time, and a "big data portrait" of product quality is constructed, which provides a solid basis for quality traceability and process optimization. In recent years, domestic enterprises have increased their investment in testing, and some large-scale enterprise testing centers have begun to take shape. However, on the whole, small and medium-sized enterprises still have the problems of poor experimental equipment and incomplete testing items, and the low degree of data information management makes it difficult to realize rapid diagnosis and systematic improvement of quality problems, which restricts the overall leap of product quality.

Third, product performance: testing the truth in actual combat

(A) sealing and durability

Sealing performance can be called the "lifeline" of valves, and European and American valves have obvious advantages in this respect. Taking the ball valve as an example, European and American enterprises rely on high-precision grinding technology to make the ball closely fit the valve seat, and the roughness of the sealing surface can reach Ra 0.2-Ra 0.4 ¦Ì m. With advanced elastic sealing materials, such as PTFE modified materials and high-performance rubber, the valve leakage rate is extremely low, almost "zero leakage" under high pressure and high temperature conditions.

On the other hand, in some domestic valves, the machining accuracy of sealing surface is not good, the roughness is often above Ra0.8¦Ìm, and the sealing material has insufficient temperature resistance, pressure resistance and aging resistance, which is prone to hardening and cracking, resulting in frequent internal and external leakage problems of general valves, and even it is difficult to ensure reliable operation within a maintenance period. In terms of durability, European and American valves rely on high-quality materials and exquisite technology. General valves, such as gate valves and globe valves, have a service life of 1-2 maintenance periods or even longer under normal working conditions, and can withstand frequent opening and closing operations and fluid erosion.

Domestic valves are limited by material strength and manufacturing accuracy, and the problems of wear and corrosion are relatively prominent, and the service life is short, especially under the working conditions of high parameters and strong corrosion, the gap is more obvious. It is urgent to optimize the material formula, improve the process accuracy and enhance the durability of valves.

(2) Adjustment accuracy stability

In the field of automatic control valves, adjustment accuracy and stability are key performance indicators. Advanced regulating valves and electric valves in Europe and America monitor the fluid parameters in real time with the help of high-precision sensors and feed them back to the intelligent control system, and cooperate with precise actuators to realize accurate regulation of flow and pressure. Its flow characteristic curve accurately matches the process requirements, and the adjustment accuracy can reach 0.5%-1%, which effectively guarantees the consistency of product quality in fine process industries such as chemical industry and pharmaceutical industry.

On the other hand, in China, the accuracy of some automatic control valve sensors is limited, the algorithm of control system is backward, the response of actuator is slow, and the flow adjustment is "rough", and the accuracy is often 3%-5%, which is difficult to meet the strict requirements of high-end technology. Moreover, in the face of complex working condition fluctuation, European and American valves rely on excellent adaptive control technology to quickly stabilize operating parameters; Domestic valves are prone to oscillation and overshoot, which affects the stability and reliability of the system. It is necessary to speed up the intelligent upgrade and improve the performance.

Fourth, the price after-sales: the choice to weigh the pros and cons

(A) price positioning factors

Price is always the key factor that users can't ignore when choosing valve products. Analyzing the price difference between domestic valves and European and American valves, the root causes are complicated. In terms of raw material cost, high-end alloys, special plastics and other materials often used in European and American valves have high research and development costs and relatively single supply channels, resulting in high material costs; Although domestic valves rely on imports for some high-end materials, the cost of middle and low-end materials can be effectively controlled by virtue of the advantages of local resources and large-scale production.

The manufacturing process cost also has a significant impact. In order to pursue the ultimate precision and excellent performance, European and American enterprises introduce cutting-edge CNC machining, precision testing and other equipment to develop new technologies. The equipment purchase, process research and development and maintenance costs are high, and these costs are allocated to products, pushing up prices; The process innovation of domestic valve enterprises is gradual, the localization rate of equipment is gradually improved, and the cost structure is relatively optimized, which makes the products more affinity in price. In addition, the brand premium accounts for a relatively large proportion of valve prices in Europe and America, and the century-old shop has a very high brand added value with its profound technical precipitation and wide market recognition; Domestic valve brand construction started late, its brand influence is limited, its price depends more on cost and market competition, and it lacks high premium space, but it also provides an affordable choice for users who pursue cost performance.

(B) after-sales service competition

After-sales service is like a "peace of mind shield" for valve products. European and American valve enterprises have built a global after-sales service network. Large multinational enterprises have set up spare parts centers in major industrial countries, equipped with professional technical teams, which have fast response speed, can quickly allocate resources in case of emergency failure, provide on-site maintenance and replacement services, and ensure the rapid recovery of production lines. The service covers the whole life cycle, from precise guidance of installation and debugging, to professional advice of regular inspection and preventive maintenance, to technical support of equipment upgrading and transformation, so as to ensure the efficient operation of valves in all directions.

In contrast, domestic valve enterprises are based on the local market and rely on the intensive regional sales network, which can quickly respond to the needs of local customers, and can realize the same-day or next-day door-to-door service in the province or even the city, with low maintenance cost and convenient and efficient communication; In addition, some enterprises can provide personalized transformation and adaptation services for the complex and diverse working conditions in China, and deeply meet the special needs of users. However, when expanding overseas markets, the after-sales service network construction of domestic enterprises lags behind, and the cross-cultural service ability needs to be improved. It is necessary to learn from the experience of Europe and the United States, strengthen the global service layout, enhance the competitiveness in all directions, truly integrate with the international community, and "escort" the valve products.

V. The Rise of State Power: Present Situation and Future

In recent years, China valve industry has made great progress and achieved remarkable results. In terms of scale, it has leapt to the forefront of the world and become an important valve production base. Many small and medium-sized enterprises have flourished and the industrial cluster effect is remarkable. For example, the pump and valve industrial cluster in Wenzhou, Zhejiang Province has a large scale and complete categories, which is quite influential in domestic and foreign markets. In the field of technological innovation, there are also frequent bright spots. Some leading enterprises have increased investment in research and development, actively explored cutting-edge products such as smart valves and ceramic valves, and made breakthroughs in key technologies such as sealing technology and automatic control, narrowing the gap with the international advanced level.

However, it cannot be ignored that the road ahead is still full of thorns. On the one hand, the bottleneck of localization in the field of high-end valves still exists, such as valves in extreme working conditions such as deep-sea mining and nuclear power, and the key technologies and core components still depend on imports, so the problem of "stuck neck" needs to be solved urgently; On the other hand, there are many small and medium-sized enterprises in the industry, with fierce homogenization competition and frequent low-price competition strategies, which reduces the profit margin, weakens the motivation of enterprise R&D investment and quality improvement, and restricts the overall upgrading of the industry.

Looking forward to the future, China valve industry needs a multi-pronged approach to break through the bottleneck and move towards high-end. Enterprises should strengthen independent research and development, cooperate with scientific research institutions in depth, build an innovation platform in Industry-University-Research, overcome key core technologies, improve the level of materials and processes, and drive product quality to advance with innovation; In terms of quality control, strictly benchmark international advanced standards, improve the quality management system, introduce advanced testing equipment and digital management means to ensure product consistency and stability; At the industrial level, strengthen industry integration, guide the differentiated development of small and medium-sized enterprises, focus on sub-sectors to be refined and strong, and cultivate internationally competitive brand enterprises; In terms of market expansion, we will deepen the huge domestic demand market, accurately meet the needs of key industries such as petrochemical industry and new energy, actively deploy overseas and integrate into the international industrial chain, rebuild the international image of China valves with high quality and low price products, and make solid progress towards the goal of becoming a global valve manufacturing power.Where is the gap between domestic valves and European and American valves?

Although the valve is small, it plays a huge role.

In many fields, such as industrial production, urban construction, energy transmission, etc., although the valve seems unremarkable, it actually plays an indispensable key role. It is like a loyal "gatekeeper", precisely regulating the flow, pressure and direction of fluid, and ensuring the smooth and efficient operation of various systems.

In the petrochemical industry, the valve is an effective "assistant" to control all kinds of flammable, explosive and corrosive media. Special valves such as high-temperature and high-pressure ball valves and corrosion-resistant gate valves, like steel guards, closely control every move of the fluid to protect the safety in production. In the field of electric power industry, from boilers to steam pipes to cooling water systems, valves also shoulder heavy responsibilities. Especially in nuclear power plants, those valves with radiation protection, high pressure resistance and high temperature resistance are the core components to ensure the safe and stable operation of nuclear power units, and no mistakes are allowed.

In the urban water supply and water treatment system, butterfly valves, gate valves and ball valves can be seen everywhere. They silently adjust the water flow, ensure the stable supply of water for residents, and help sewage treatment meet the discharge standards, guarding the "lifeline" of the city. The food and pharmaceutical industry has extremely high requirements for hygiene standards, and sanitary ball valves and diaphragm valves have emerged as the times require. With their smooth surfaces and excellent sealing performance, they put an end to pollution and defend product quality and public health.

It is no exaggeration to say that valves are the basic support for the normal operation of modern society, and their quality is directly related to the production efficiency, safety level and even development prospects of all walks of life. Next, let's explore the differences in quality between domestic valves and European and American valves, and explore the road to forge ahead for domestic valves.

First, material technology: the foundation determines the height.

(A) material selection differences

Material is the foundation of valve quality. Developed countries in Europe and America have obvious advantages in the selection of valve materials by virtue of their profound industrial background and advanced technology. As far as the source is concerned, European and American valve enterprises cooperate closely with the world's top material suppliers, and can obtain high-quality and high-performance raw materials first, such as special alloy steel, high-performance plastics and new ceramics. The purity, uniformity and impurity content control of these materials are exemplary, laying a solid foundation for the excellent quality of valves.

On the other hand, in China, although the material industry has made great progress in recent years, some special materials needed for high-end valves, such as alloy steel with ultra-high temperature resistance and strong corrosion, still lag behind Europe and the United States in terms of quality stability and timeliness of supply. From the perspective of quality, European and American material standards are strict and implemented in place. Taking stainless steel as an example, the proportion of key alloy elements such as chromium and nickel is accurate, ensuring the durability and reliability of the material under complex working conditions. Domestic materials still have room for improvement in the control accuracy of similar elements and the removal of harmful impurities of trace elements.

The price factor should also not be underestimated. High-quality materials in Europe and America have high research and development costs and high quality control costs, and their prices remain high. Domestic materials benefit from the cost advantage and the price is close to the people, but it also reflects the gap of quality level to some extent. In the application field of high-end special materials, such as deep-sea oil and gas exploitation and valves used in nuclear industry, European and American valves are resistant to extremely high pressure, strong radiation and highly corrosive media with advanced materials, and have a long service life; The material adaptability and durability of domestic valves under such extreme working conditions need to be further polished, and it is urgent to strengthen R&D investment and improve material quality.

(B) manufacturing process gap

The manufacturing process is like a "skillful hand" who carefully carves the valve, directly carving out the quality details of the product. European and American valve manufacturers keep pace with each other in process inheritance and innovation, and the precision casting process is superb, which can cast a valve body with complex structure, accurate size and smooth surface, with almost no internal defects. For example, the precision of miniature precision valves in aerospace field can reach micron level, ensuring high precision of fluid control. Forging process is both rigid and flexible. Through precise control of hot working parameters, the valve parts are endowed with superior mechanical properties and high-strength stress impact resistance.

On the other hand, in China, the technological innovation of some valve enterprises lags behind, and traditional casting is prone to defects such as sand holes and air holes, which affect the strength and sealing of valve bodies; The equipment precision and process stability in forging process are insufficient, which causes the product quality to fluctuate greatly. In the machining process, European and American enterprises widely use advanced equipment such as multi-axis CNC machining center and high-precision grinder, and cooperate with intelligent tool path optimization software to realize one-time precision machining of complex surfaces and high-precision mating surfaces, and the dimensional tolerance is controlled within a very small range to ensure the smoothness and tightness of valve operation.

Although some domestic enterprises have introduced high-end equipment, there is a gap with Europe and America in programming precision, equipment maintenance proficiency and operator skill level, which leads to uneven machining accuracy. Moreover, the process cost is also a key variable. With the high R&D, equipment purchase and maintenance costs, the advanced technology in Europe and America is passed on to the product price. The domestic process cost is relatively low, but it is also necessary to weigh the quality and benefit, and explore the cost-effective process upgrade path to narrow the quality gap.

Second, quality control: details determine success or failure.

(1) Implementation of quality standards

Quality control is like a "frigate" to protect the quality of valves. In terms of standard compliance, European and American valve enterprises can be called "model students". Taking international authoritative standards such as API, ASME and DIN as examples, European and American enterprises not only strictly follow them, but also reserve sufficient safety margin in the design process by virtue of profound technical precipitation, and some key performance indicators far exceed the standard requirements, just like building a "super protective shield" to ensure the stable operation of the valve under extremely complicated working conditions.

On the other hand, in China, although most enterprises actively benchmark international standards, there is still a lack of implementation accuracy and depth. Limited by cost and technical bottleneck, some small enterprises have superficial understanding of standards, poor product consistency and stability, and obvious fluctuations in product quality in different batches. Moreover, international standards are frequently updated, and European and American enterprises rely on cutting-edge research and development and extensive international cooperation to respond quickly and integrate into new standards to ensure that products always stand at the forefront of quality; The information acquisition and technology transformation of domestic enterprises are relatively lagging behind, and it is easy to appear the embarrassing situation that the products have just reached the old standard and the new standard has been issued, and they are passive in the international high-end market competition.

(2) Means of quality inspection

In the "field" of quality inspection, European and American valve enterprises are well equipped. Advanced hot and cold experimental equipment is available to simulate the performance of valves under various extreme working conditions such as high temperature, high pressure, low temperature and corrosion, and accurately capture potential problems; High-precision coordinate measuring instrument and laser measuring technology control the dimensional accuracy of the valve at micron level to ensure the perfect cooperation of parts; Complete flaw detection equipment, such as ultrasonic flaw detection and X-ray flaw detection, "perspective scan" the key parts such as valve body and weld, and never let go of any subtle defects.

Data management is even more subtle. With the help of Industry 4.0 technology, the whole production process data is collected, stored and analyzed in real time, and a "big data portrait" of product quality is constructed, which provides a solid basis for quality traceability and process optimization. In recent years, domestic enterprises have increased their investment in testing, and some large-scale enterprise testing centers have begun to take shape. However, on the whole, small and medium-sized enterprises still have the problems of poor experimental equipment and incomplete testing items, and the low degree of data information management makes it difficult to realize rapid diagnosis and systematic improvement of quality problems, which restricts the overall leap of product quality.

Third, product performance: testing the truth in actual combat

(A) sealing and durability

Sealing performance can be called the "lifeline" of valves, and European and American valves have obvious advantages in this respect. Taking the ball valve as an example, European and American enterprises rely on high-precision grinding technology to make the ball closely fit the valve seat, and the roughness of the sealing surface can reach Ra 0.2-Ra 0.4 ¦Ì m. With advanced elastic sealing materials, such as PTFE modified materials and high-performance rubber, the valve leakage rate is extremely low, almost "zero leakage" under high pressure and high temperature conditions.

On the other hand, in some domestic valves, the machining accuracy of sealing surface is not good, the roughness is often above Ra0.8¦Ìm, and the sealing material has insufficient temperature resistance, pressure resistance and aging resistance, which is prone to hardening and cracking, resulting in frequent internal and external leakage problems of general valves, and even it is difficult to ensure reliable operation within a maintenance period. In terms of durability, European and American valves rely on high-quality materials and exquisite technology. General valves, such as gate valves and globe valves, have a service life of 1-2 maintenance periods or even longer under normal working conditions, and can withstand frequent opening and closing operations and fluid erosion.

Domestic valves are limited by material strength and manufacturing accuracy, and the problems of wear and corrosion are relatively prominent, and the service life is short, especially under the working conditions of high parameters and strong corrosion, the gap is more obvious. It is urgent to optimize the material formula, improve the process accuracy and enhance the durability of valves.

(2) Adjustment accuracy stability

In the field of automatic control valves, adjustment accuracy and stability are key performance indicators. Advanced regulating valves and electric valves in Europe and America monitor the fluid parameters in real time with the help of high-precision sensors and feed them back to the intelligent control system, and cooperate with precise actuators to realize accurate regulation of flow and pressure. Its flow characteristic curve accurately matches the process requirements, and the adjustment accuracy can reach 0.5%-1%, which effectively guarantees the consistency of product quality in fine process industries such as chemical industry and pharmaceutical industry.

On the other hand, in China, the accuracy of some automatic control valve sensors is limited, the algorithm of control system is backward, the response of actuator is slow, and the flow adjustment is "rough", and the accuracy is often 3%-5%, which is difficult to meet the strict requirements of high-end technology. Moreover, in the face of complex working condition fluctuation, European and American valves rely on excellent adaptive control technology to quickly stabilize operating parameters; Domestic valves are prone to oscillation and overshoot, which affects the stability and reliability of the system. It is necessary to speed up the intelligent upgrade and improve the performance.

Fourth, the price after-sales: the choice to weigh the pros and cons

(A) price positioning factors

Price is always the key factor that users can't ignore when choosing valve products. Analyzing the price difference between domestic valves and European and American valves, the root causes are complicated. In terms of raw material cost, high-end alloys, special plastics and other materials often used in European and American valves have high research and development costs and relatively single supply channels, resulting in high material costs; Although domestic valves rely on imports for some high-end materials, the cost of middle and low-end materials can be effectively controlled by virtue of the advantages of local resources and large-scale production.

The manufacturing process cost also has a significant impact. In order to pursue the ultimate precision and excellent performance, European and American enterprises introduce cutting-edge CNC machining, precision testing and other equipment to develop new technologies. The equipment purchase, process research and development and maintenance costs are high, and these costs are allocated to products, pushing up prices; The process innovation of domestic valve enterprises is gradual, the localization rate of equipment is gradually improved, and the cost structure is relatively optimized, which makes the products more affinity in price. In addition, the brand premium accounts for a relatively large proportion of valve prices in Europe and America, and the century-old shop has a very high brand added value with its profound technical precipitation and wide market recognition; Domestic valve brand construction started late, its brand influence is limited, its price depends more on cost and market competition, and it lacks high premium space, but it also provides an affordable choice for users who pursue cost performance.

(B) after-sales service competition

After-sales service is like a "peace of mind shield" for valve products. European and American valve enterprises have built a global after-sales service network. Large multinational enterprises have set up spare parts centers in major industrial countries, equipped with professional technical teams, which have fast response speed, can quickly allocate resources in case of emergency failure, provide on-site maintenance and replacement services, and ensure the rapid recovery of production lines. The service covers the whole life cycle, from precise guidance of installation and debugging, to professional advice of regular inspection and preventive maintenance, to technical support of equipment upgrading and transformation, so as to ensure the efficient operation of valves in all directions.

In contrast, domestic valve enterprises are based on the local market and rely on the intensive regional sales network, which can quickly respond to the needs of local customers, and can realize the same-day or next-day door-to-door service in the province or even the city, with low maintenance cost and convenient and efficient communication; In addition, some enterprises can provide personalized transformation and adaptation services for the complex and diverse working conditions in China, and deeply meet the special needs of users. However, when expanding overseas markets, the after-sales service network construction of domestic enterprises lags behind, and the cross-cultural service ability needs to be improved. It is necessary to learn from the experience of Europe and the United States, strengthen the global service layout, enhance the competitiveness in all directions, truly integrate with the international community, and "escort" the valve products.

V. The Rise of State Power: Present Situation and Future

In recent years, China valve industry has made great progress and achieved remarkable results. In terms of scale, it has leapt to the forefront of the world and become an important valve production base. Many small and medium-sized enterprises have flourished and the industrial cluster effect is remarkable. For example, the pump and valve industrial cluster in Wenzhou, Zhejiang Province has a large scale and complete categories, which is quite influential in domestic and foreign markets. In the field of technological innovation, there are also frequent bright spots. Some leading enterprises have increased investment in research and development, actively explored cutting-edge products such as smart valves and ceramic valves, and made breakthroughs in key technologies such as sealing technology and automatic control, narrowing the gap with the international advanced level.

However, it cannot be ignored that the road ahead is still full of thorns. On the one hand, the bottleneck of localization in the field of high-end valves still exists, such as valves in extreme working conditions such as deep-sea mining and nuclear power, and the key technologies and core components still depend on imports, so the problem of "stuck neck" needs to be solved urgently; On the other hand, there are many small and medium-sized enterprises in the industry, with fierce homogenization competition and frequent low-price competition strategies, which reduces the profit margin, weakens the motivation of enterprise R&D investment and quality improvement, and restricts the overall upgrading of the industry.

Looking forward to the future, China valve industry needs a multi-pronged approach to break through the bottleneck and move towards high-end. Enterprises should strengthen independent research and development, cooperate with scientific research institutions in depth, build an innovation platform in Industry-University-Research, overcome key core technologies, improve the level of materials and processes, and drive product quality to advance with innovation; In terms of quality control, strictly benchmark international advanced standards, improve the quality management system, introduce advanced testing equipment and digital management means to ensure product consistency and stability; At the industrial level, strengthen industry integration, guide the differentiated development of small and medium-sized enterprises, focus on sub-sectors to be refined and strong, and cultivate internationally competitive brand enterprises; In terms of market expansion, we will deepen the huge domestic demand market, accurately meet the needs of key industries such as petrochemical industry and new energy, actively deploy overseas and integrate into the international industrial chain, rebuild the international image of China valves with high quality and low price products, and make solid progress towards the goal of becoming a global valve manufacturing power.