... Material:ss316,ss316l,cf8m,cf3m,cn7m,cg8m ,carbon steel,alloy steel etc4.Standard:ASTM,AISI,DIN,JIS etc5.strict material ... ; Argon arc welding; Sand blasting; Clearing and finishing; Heat treatment; Correction and inspectionweight0.05kg to 50kgMaterialSS:303,304,304L,316 ... 15CrNi6, 16MnCr5, 42CrMo4, 35CrMo, 40Cr etcsizeAccording to customers' requirementdesignpacking custom-made pump impeller cd4mcu