Shanghai Nainai Valve Manufacture Co., Ltd. is established in 1986. We are pride ourselves on a workforce of registered capital CNY 86.5 million, 380 people including 82 engineering technical personnel, 33,300 square meters of construction area, 280 sets of sophisticated machining equipments. The output value of 2008 is CNY 260million with valves of 11,000 tons/year, including USD 25 million of Export value. Nainai is professional valves manufacture. We mainly produce kinds of steel ball valves, gate valves, check valves, globe valves, plug valves, butterfly valves, safety valves, oilfield valves and any valves of special type. The products are widely used in industries of oil, chemical, metallurgy, electric power, etc. All the products are approved by API, ASME, EN, ISO, JIS, DIN, BS, and national GB standard. They have been distributed all over the world, and their steady and reliable quality has won good evaluation from our valuable clients in Europe, America, Japan, Middle east, Southeast Asia, Russia, etc.

To ensure products quality and service, the company has built sound quality management and assurance system, and have been passed various certificates, such as (DNV) ISO 9001, API 6D, API 600, API 607, API 6FA, PED CE, ISO14001, etc.

The company has advanced testing and inspection equipments. It has established advanced chemistry lab, which is equipped with Germany SPECTROMAXx,  American NITON portable spectral and alloy analyzer, helium mass spectrometer leak detector, high speed igniting infrared C&S equipment; and it has established sophisticated test room for mechanical performance, which is equipped with hydraulic universal materials tester, charpy impact machine tester, spring tension and compression testing machine, ultrasonic hardness, ultrasonic thickness gauge, magnetic defect detector, ultrasonic NDT equipments; also it has established advanced pressure test center, which is equipped with intellectual valve torque,device for lift test, hydr