1.steel flange for flange pipe manufacture 2.1/2'' to 60''flange 3.high quality flange 4.short delivery flange 5.ISO,API,CE Steel flange for flange pipe ... UNS S31803, UNS S32750, UNS S32760 STANDARDSANSI, ISO, JIS, DIN, BS,GB, SH, HG,QOST,ETC.CE and certification:ISO9001:2000 ... , F53/UNS S32F50, F55/UNS S32F60 STANDARDSANSI, ISO, JIS, DIN, BS,GB, SH, HG,QOST,ETC.CE and certification:ISO9001:2000 ...