Zhejiang Dewei valve Co.,Ltd. is located in Oubei town ,Yongjia county,which is named as "valve hometown of China".Established in February 5, 2007,Yang Yinyou ,who is the chairman of Zhejiang Dewei Valve co.,Ltd,has been worked in the ball manufacturing industry more than 18 years and has a very rich experience in the production of the sphere.
Our company can provide ANSI, API, DIN, GB standards balls,the ball diameter is 2 ~ 36 and the pressure rating is 150LB ¡« 2500LB.The ball matrix materials are mainly A105, LF2, 410, 4130, 4140, F304, F316, 17-4PH, F51, Monel and so on,the surface coating including many high hardness, high wear resistance, and corrosion resistant materials,such as electroless nickel plating, hard chromium (ENP) (Chrome Plating), tungsten carbide (Tungsten Carbide), stellite alloy (Stellite), Inconel, (Inconel) etc.In order to improve the machining precision products, operating accuracy and spherical roundness, we introduce a CNC fast aspheric grinding machine, who's control system is Germany Siemens, and solved the problems that opening time later, big torque, high cost of supporting the driving device of large pipeline ball valves.
Dewei ball's manufacturing took with high-quality materials that in line with international standards, used advanced production equipment and mature production technology,established the establishment of a sound quality management system, with the most competitive prices to provide customers the best quality products and the most perfect after sale service.In 2008,Dewei set hard seal ball and the supporting seat as the company's flagship product,and in-depth study and improvement of production technology, at present, our quality has been the leading position in the industry, providing the supply of polysilicon coal chemical industry customers with quality guarantee.
Dewei ball's products selling international and domestic markets, mainly exported to Russia, France, Italy, the United States and Southeast Asia and other countries and regions.