The Dewei Valve Company is located in the beautiful city of Wenzhou, Lin Pu Road Oubei Dongou Industry Zone, which is a commitment to develop high-precision, high-tech, multi-performance ball valve manufacturer. In order to improve the accuracy of product processing, the accuracy of the operation and the roundness of the sphere, we introduce the German Siemens CNC equipment - spherical grinding machines, machining centers, as well as spherical roundness measuring instrument to solve a large-scale pipeline ball valves, slow turn-on time torque, matching drives the high cost of the main problems.
Dewei company's products can meet the needs of the petroleum, chemical, gas pipelines and installations, to provide the function of cuting off  and  adjustSteering. Our products of DN200-DN1400 (1/2 "-32") carbon steel, stainless steel, alloy steel, duplex stainless steel, super duplex stainless steel, INCONEL, MONEL for materials, applicable to the production of different types of balls and ball valves different operating conditions (such as: petroleum, natural gas pipelines, LPG, of LNG pipeline and piggy banks, oil refineries, acid and alkali chemical plants, desalination, and refined oil pipelines).