... ) Standard: ISO,DIN, JIS 3) Certification: CE, ISO plate-type flat welding flangeOur company is a professional pipe fitting manufacture, sowe ... , weld neck flange, plate flange, lap joint flange, blind flange, carbon steel flange, stainless steel flange, alloy steel flangeSizeDN10 to DN2000Materialcarbon ... , GB, JISPaintingblack, oil, yelloy, znic and so onTechnicsforged plate-type flat welding flange