a) Material: carbon steel, stainless steel, alloy steel,etc. b) closed /open/ Semi-open impeller c) Delivery: within 3 days STAINLESS STEEL IMPELLERa) Material: carbon steel, stainless steel, alloy steel,etc.b) Process: laser welding machinec) Standard: ASTM, BS, SAE, DIN, UNId) Delivery: within 3 days