... 1/2''-48''(seamless/welded)3. Thickness: SCH STD, XS, XXS, SCH 10 ~ SCH 1604. Standard: ANSI ... 40S, 80S, SCH10, SCH20, SCH30, STD, SCH40, SCH60, XS, SCH80, SCH100, SCH120, SCH140, SCH160, XXSMaterialCARBON STEELASTM A234 WPB ... 316H, WP321, WP347/347HSTANDARDANSI B16.9, ANSI B16.28, DIN2605/2615/2616/2617, JIS2311/2312/2313, GOST17375 ... by clients ASME B16.9/ASME B16.28/ASME B16.25/ASME B16.49 A234 ...