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ZHEJIANG QIAI TUBING INDUSTRY CO., LTD. was established in 1996, as a famous China plastic fittings manufacturer and PERT pipes factory. Our main products include plastic fittings, PP-R pipes and fittings, aluminum pipes and fittings, PE-RT pipes and fittings, brass fittings, water and gas valves, stainless steel corrugated flexible gas hose, stainless steel flexible water hose, and so on.

QIAI is based on excellent management, relying on the perfect quality system. All the productions passed by ISO9001 international quality management system, certificated by CE. We are honored to gain the license of Special Equipment Manufacturing of Gas System.



30 years
industry experience




Sales country
and region

Application field

Our products are widely used

Floor heating
Floor heating
Fire pipeline
Water Pipe
Kitchen Room

News Center

Quality Never Goes Out Of Service

Structural difference between gate valve and ball valve

What are the differences between a stainless steel ball valve and a stainless steel gate valve? Acco...

What should be paid attention to in the maintenance process of pneumatic ball valve

Pneumatic ball valves often need to be kept clean and tidy during use, and the transmission threads ...

What methods can be used to solve the problem that the regulating valve is not strictly closed

Pneumatic control valves are widely used in petrochemical, power plants, iron and steel metallurgy, ...

What are the classifications of gas valves

Gas valves have a wide range of uses, a wide variety, and a variety of classification methods. In ge...

What are the standards and specifications for valve pressure testing

The standards and specifications for valve pressure testing are as follows: 1. Under normal circumst...

What are the standards for hot melt welding of PE pipes

1. Fix the welding nozzle on the heat welding machine, the amount of misalignment is less than 20% o...