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28

2019-12

【Industry trends】 No negative pressure water supply check valve function

In the complete set of water supply equipment, whether no negative pressure water supply equipment or variable frequency constant pressure water supply equipment...
21

2019-12

【Industry trends】 Status analysis of water treatment industry: most water treatment enterprises are small in scale
14

2019-12

【Technical article】 Valve operating procedures

1. The handwheel and handle of manual valve are designed according to the hand force of ordinary people, considering the strength of sealing surface and necessary closing force...
07

2019-12

【Technical article】 The corresponding method is adopted to control the deformation in a small range as far as possible

Heat treatment technology is an important means to obtain good properties of various metal materials.In many practical applications, reasonable selection of materials and various forming processes can not meet the mechanical properties...
30

2019-11

【Industry trends】 The development of intelligent casting has a new demand for casting talents

According to incomplete statistics, the number of enterprises lacking smelting workers, molding workers, engineers,quality control and management personnel in China's foundry industry is about 58%, 20%, 50%, 34%...
23

2019-11

【Technical article】 Certification and testing of valves and actuators

ISO 9001 quality system certification, ISO 14001 environmental management system certification, OHSAS 18000 occupational health and safety management system certification, eu CE certification, pressure vessel PED directive, API certification...
16

2019-11

【Industry trends】 The four national valve standards will be implemented on May 1, 2020

Recently, the state administration for market supervision and administration of China (Standardization Administration of China) approved and issued 343 national standards and 2 revision orders of national standards, including...
09

2019-11

【Industry trends】 China general machinery industry association led the participation, BBS and inspection activities have been a complete success

The 18th Russia international exhibition of pump valves, compressors, actuators and engines (PCV exhibition for short) held in Moscow, Russia.
31

2019-10

【Technical article】 Technical performance of drainage engineering valves

The strength of the valve is the ability of the valve to withstand medium pressure.Valves are mechanical products under internal pressure and must have sufficient strength and stiffness to ensure long-term use without breaking or deformation.
24

2019-10

【Technical article】 Analysis and research on performance test of backflow preventer

The function, structure characteristic and performance test of backflow preventer are introduced.

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