Founded in 2002, Chenggao valve Co.,Ltd. has developed into a technology and professionalvalve manufacturer,which integratedR&D,production,sales,services,import and export all in one modeoperation. The company covers an area of 26,000ã¡with two production bases in Wenzhou and Lishui,currently 200 employees and 30 of them are senior engineers and technicians. Equipped with over 100 sets of metal processing&cutting ,machining and testing equipments including CNC machines,advanced physio chemical NDT,spectral analysis,mechanical property testing,ultrasonic fault detectors,ultrasonic thickness gags ,also lifting,transportation equipments.We produce  Ball Valves, Gate Valves, Globe Valves,CheckValves,Plug Valves, Butterfly Valves and Strainers with standard ofAPI, BS,DIN and GOST, as well as non-standard and special valves.Our valves's Nominal Diameter is DN10~DN4500mm(1/2"-64"), TheNominal Pressure is from 1.6Mpa~42Mpa(150Lb~2500Lb), The Valves'working temperature is -196â ~ 750â.  The Materials are:Carbon Steel,Stainless steel, heat resistant alloy steel, Monel,low temperature steel,duplex steel etc. Major Approvals:  API 6D , API 607 , ISO 9001, CE(97/23/EC),TS Test & Inspections: RT,UT,MT,PT, Valve Cryogenic Test&Hight/Low Temperature Test R & D :  Auto CAD , Solidworks,FEA ( Finite Element Analysis )