... 2" - 72"3) Material: Carbon Steel, Stainless Steel, Alloy Steel, Duplexsuper duplex stainless steelASTM: Carbon Steel: ASTM A234 WPB, WPC; ASTM A420 ... 1.0488, 1.0566JIS:Carbon Steel: PG370, PT410, SS400Stainless Steel: SUS304, SUS304L, SUS316, SUS316L, SUS321Alloy Steel: PA22, PA23,PA24, PA25 ... , WP316/316L, WP321, WP347, WPS 312545 Duplex$super duplex stainless steel ASTM A 815 UNS S31803, UNS S32750, ...