Size 1/2"—72" Wall Thickness SCH10,SCH20,SCH30,STD,SCH40,SCH60,XS,SCH80,SCH100,SCH120, SCH140,SCH160,XXS, DIN, JIS standard thickness Standard ASTMA234,ASTM A420,ANSI B16.9/B16.28/B16.25,ASME B16.9, JIS B2311-1997/2312, JIS B2311/B2312, DIN 2605-1/2617/2615, GB 12459—99,EN Standard etc. Material Q235, 20#, 10#, Q345 A234 WPB, WP5, WP9,WP11, ST37.0,ST35.8,ST37.2,ST35.4/8,ST42,ST45,ST52,ST52.4 STP ...