Usage:used for low pressure liquid delivery, such as water, gas, and oil. Standard:api 5l, api 5ct, astm 53, en10217, din 2458. Is 3589, gb/t3091, gb/t9711 Certificate:api 5l psl1 / psl2, api 5ct Out diameter:219mm ¨c 1820mm(8"-72") Wall thickness:5.0 - 50mm Length:6 ¨c 12m 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 Surface:fusion bond epoxy coating, coal tar epoxy, 3pe, vanish coating, bitumen coating, black oil coating as per customer¡¯s requirement As per customer's requirements