... : From 1/2" to 40" / DN15-DN1200 WT: SCH 20, SCH 40, STD, SCH80, SCH 100, SCH 120. SCH160, XXS Standard: ASTM, ASME, JIS, DIN ... , Alloy steel, Stainless steel Type: Blind flange, slip-on flange, welding neck flange, thread flange, socket welding flange Qualification ISO, CE, API Surface treatment: Black ...