... 1.Material is stainless steel CF8M,316. 2.Process:Investment casting. 3.Used in clean water Product detailsWe are a supplier ... ,316,ASTM A743, grade CN7M,CF8M,CF8,304L,316L,430F,430,440A.2)Process:Investment casting, silicasol casting or lost wax casting,water glass casting ... industry. We wellcome any inquiry you may have for castings. 316 Stainless Steel Impeller Casting