قیمت ارزان astm a351 cf8m فروش داغ
Valve Material Specifications (A216/351/352/105/182) A forged valve body is produced by forging and machining solid steel. The key specifications for cast steel valves body materials are ASTM A216 (WCA, WCB, WCC), ASTM A352 LCB/LCC (low-temperature), and ASTM A351 CF8/CF8M.