... B36.10M---1996, DIN2605 / 2615 / 2616, JIS P2311/23123. Size: 1/2"-72"4. Wall Thickness: SCH20,STD,SCH40,SCH80,SCH160,XXS5 ... . Material: ASTM A234 WPB, ST35.8, ST37, WP11, 20#, Q2356. Surface treatment: black painting,Anti-rust ... varnish oil,hot galvanizing or as customer's special requirement 1/2"-72" ANSI,ASME,ASTM,JIS,DIN Carbon Steel Reducer