... ,JPI,SABS material:alloy steel.stainless steel,carbon s High Quality Weld Neck FlangeS235JR Carbon Steel Flange(UNI2276, UNI6083, UNI6089, UNI2280 ... painting or black/yellow/varnish painting or GalvanizingQuality control:Internal/ ISO9001, KS approval etcInspection:Internal/third partyCertificate:Material certificate, Physico-chemical analysis certificate ...