... ANSI, DIN,JIS, BS and UNI carbon steel stainless steel and alloy steel cap Standard: Standard: GB /ASTM / ASME / DIN / JIS.Material:Carbon steel(10#, 20#, Q235, ... 20G, 16Mn, ASTM A234, ASTM A105, ST37-2),Stainless steel (TP304, TP304H, TP304LN, TP304L, TP310 / S, TP316L, TP316H, TP316 ... can offer all kinds of the pipe fittings and can manufacture them according to any drawings