... C carbon steel flange 5.API,CE,ISO A105 ASME B16.9 carbon steel flange 1.Products Items: ... S31803, UNS S32750, UNS S32760 STANDARDSANSI, ISO, JIS, DIN, BS,GB, SH, HG,QOST,ETC.CE and certification ... /UNS S32F50, F55/UNS S32F60 STANDARDSANSI, ISO, JIS, DIN, BS,GB, SH, HG,QOST,ETC.CE and certification ... /316L, F321, F347, ANSI, ISO, JIS, DIN, BS,GB, SH, HG,QOST,ETC. ASME B16.11ISO9001:2000 , API , BV , SGS ...