... saw pipes, oil pipes, ERW pipes, seamless steel pipes,elbow,reducer,tee,caps,flange,tube etc.. TYPES: elbows, seamless ... pipes, oil pipes, ERW pipes, seamless steel pipes,elbow,reducer,tee,caps,flange,tube etc...1. Butt weld ... XXSSTANDARD: ASME ANSI B16.9, JIS, DINMATERIAL:ASTM A234-WPB, A420-WPL6/L3 etc.; ASTM A234- WP12, WP11, WP15, WP22, WP1 ... We will be happy to give you details. steel 180 deg elbow