Longitudinal submerged-arc welded steel pipe Process:lsaw - UO(UOE)B(RBE)JCO(JCOE, COE) Dsaw -double submerged arc welded Out diameter:219mm - 1820mm(8"-72") Wall thickness:5.0 - 50mm Length:6 - 12m Standard:api 5l, api 5ct, astm 53, en10217, din 2458. Is 3589, gb/t3091, gb/t9711 Certificate:api 5l psl1 / psl2, api 5ct Steel grade:api 5l: gr b, x42, x46, x56, x60, x65, x70 Astm a53: gr a, gr b, gr c En: s275, s275jr, s355jrh, s355j2h Gb: q195, q215, q235, q345, l175, l210, l245, l320, l360- l555 Usage:used for low pressure liquid delivery, such as water, gas, and oil. Pls feel free to contact erica he for any need.