... :carbon steel . Size:1/2"-48"(DN15-DN600). Standard:ANSI, ASTM,MSS, JIS,DIN,EN BUTT WELDED FITTINGSProduction Name45 / 90 / 180 , Long / Short ... 815 UNS S31803, UNS S32750, UNS S32760 STANDARDSANSI, ISO, JIS, DIN, BS,GB, SH, HG,QOST,ETC.CE and certification:ISO9001:2000 , ... S31803, F53/UNS S32F50, F55/UNS S32F60 STANDARDSANSI, ISO, JIS, DIN, BS,GB, SH, HG,QOST,ETC.CE and certification:ISO9001:2000 , ...