weld neck steel flange 1) size:1/2" to 160" 2) Standard: ISO,DIN, JIS 3) Certification: CE, ISO ... flange, stainless steel flange, alloy steel flangeSizeDN10 to DN2000Materialcarbon steel, stainless steel, alloy steelPressurePN0.1 to PN40StandardISO, DIN, ANSI/ASME, GB, JISPaintingblack ...