... ) Raw material: Carbon steel, alloy steel, stainless steel Valve material: WCB, A105, CF8, CF8M, CF3, CF3M, F304, F304L, F316, ... , WC9, F11, C5, LCB, LCC, etc. Standards: API, DIN, GB, JIS, BS, etc. Connection end: RF, RTJ, BW, SW, NPT Pressure ...