Specification:

Material: Carbon steel: ASTM A234 WPB ,ST37.0 , A105 20#  etc.

                Stainless steel: 304,304L,316,316L,A403,A312,1.4301,1.4306,1.4401,1.4571 etc.

Size:1/2"-48"

Standard:ASME,JIS,DIN,GB