1.Carbon Steel Reducer 2.Size: 1/2"-72" 3.Wall Thickness: SCH20,STD,SCH40,SCH80,SCH160, ... 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 ... hot galvanizing or as customer's special requirement 1/2"-72" ANSI,ASME,ASTM,JIS,DIN Carbon Steel ...