Changmao Valve Group Co., Ltd. is located in Xicun Town, Gongyi City, Henan Province. It is a unit integrating valve joints, pipeline equipment and related products that integrate R&D, manufacturing and sales. The company was founded in 1988, covering an area of ​​10,000 square meters, with 80 employees and an annual output of 400,000 sets of valve joint products. The company is a self-operated import and export enterprise, an exhibitor of the Canton Fair, and an ISO9001 certified enterprise. Registered trademark "Changmao" brand.

The company's products mainly use national standards GB/T, JB, HG, national standards ISO, American standards API, ANSI, British standards BS, German standards DIN, European standards EN, Japanese standards JIS, Korean standards KS, Italian standards UNI, Australian standards AS, South Africa SABS and other standards, production diameter DN15-DN4000, pressure level 0.25MPa-42MPa (125LG-2500LB), working temperature -30℃-570℃, rubber materials mainly include NR, EPDM, NBR, NEOPRENE, etc., metal materials mainly include Q235 , Q345, SS304, SS316, etc. The products mainly include rubber joints, steel telescopic joints, stainless steel corrugated pipes, rubber check valves, compensators, air duct joints, force transmission joints, soft joints, flanges and more than 100 series, More than 1000 specifications. It is widely used in various fields such as petroleum, petrochemical, chemical industry, electricity, construction, papermaking, medicine, water supply and drainage.

The company's products have been adopted by many major projects such as Beijing West Railway Station, CCTV, Yanshan Petrochemical, Shanghai Baosteel Power Plant, etc., and cooperate with more than 100 domestic import and export companies to export to the United States, Japan, Spain, the United Kingdom, Germany, South Korea, Vietnam, Singapore, Malaysia, Dubai, Brazil and other countries.

Company size

The company is located in Xicun Town, Gongyi City, Henan Province. It covers an area of ​​10,000 square meters and has a construction area of ​​10,000 square meters. It has 80 employees, including 26 senior technical talents and 25 intermediate technical talents. It has more than 300 sets of production equipment. Annual output of 400,000 sets of valve joints. The company has a complete production line, from design, raw material refining, mechanical processing, assembly, spraying, and all of which are independently completed in the Changmao factory area. The company's business is divided into domestic and international departments, using technology and management experience to provide customers with products and services.

Corporate Products

Rubber joints: flange, threaded, single sphere, double sphere, concentric, eccentric, elbow, buckle, flange, anti-pull, oil, wear, acid and alkali, tetrafluorine lining It can meet the various usage needs of customers.

Telescopic joints: single flange, double flange, force transmission, limit position, detachable, gland type, nut type, ball type, large deflection and other styles, Q235, SS304, SS316 and other materials.

Corrugated pipe: vibration-absorbing type, underground type, transverse, axial, universal, large and small pull rod type, unconstrained, square, round type, etc., SS304, SS316, SS316L and other materials.

Rubber check valve: clamp type, flange type, straight mouth, curved mouth, duckbill valve, etc., natural rubber, ethylene propylene ternary rubber, nitrile rubber, neoprene, butyl rubber and other rubber materials.

Air duct compensator: rubber air duct, fabric fiber and other materials, rectangular and round shapes.

Flange: adopts national standard GB/T, JB, HG, national standard ISO, American standard API, ANSI, British standard BS, German standard DIN, European standard EN, Japanese JIS, Korean standard KS, Italian standard UNI, Australian standard AS, South Africa SABS and other standards are equipped with various standards of rubber joints, telescopic joints, corrugated pipe compensators, rubber check valves and other products.