size from 1/2" to 72" thickness sch20 sch40.. sch xxs We have ISO certification Typecarbon steel pipe fitting (elbow,tee,cross,reducers,caps,bends,flanges) Size1/2"-48" max of the seamless bend up to 60“StandardISO,ANSI,JIS,DIN,GB/12459,GB/T13401,ASME B16.9,SH3408,SH3409,HG/T21635,HG/T21631,SY/T05010MaterialA234-WPB.A420-WPL6.A234-WP12.A234-WP11.A234-WP5.A403-WP304.A403-WP304L. A403-WP316.A403- ...