... , SGS, BV, etc. butt welding astm a234 wpb pipe fittings Typebutt welding astm a234 wpb pipe fittingsPipe Size1/2"—72" Wall ThicknessSCH10 ... , GB 12459—99,EN Standard etc.MaterialQ235, 20#, 10#, Q345A234 WPB, WP5, WP9,WP11,ST37.0,ST35.8,ST37.2,ST35 ... Co.,LtdContact:echo sales @ honrypipe.com butt welding astm a234 wpb pipe fittings