... & AS Size :DN15-DN1200 ISO9001 ISO14001 OHSAS1800 ANSI Stainless Steel Welded Neck FlangesNameFlangeSize1/2" to 48" DN15—DN1200ThicknessSCH5--SCH160.XXSPressureSCH5 ... ISO, JIS, DIN, GB, SH, AND HG etcMaterialcarbon steel, stainless steel & alloy steelPriceVery competitiveQualityFirst gradeCertificateISO9001:2000, API ,BV ,CEOther ... :2000 and API strictly . ANSI Stainless Steel Welded Neck Flanges