Lsaw (longitudinal submerge-arc welded) uo(uoe), rb(rbe), jco(jcoe) Dsaw (double submerged arc welded) Steel grade: Bs:1387, en10217:s185, s235, s235jr, s235 g2h, s275, s275jr, s355jrh, s355j2h, st12, st13, st14, st33, st37, st44, st52 Astm a 53: gr. A, gr b, gr c, gr.D Api 5l: a, b, x42, x46, x52, x56, x60, x65 x70 Gb/t9711: l175, l210, l245, l290, l320, l360, l290, l320, l360, l390, l415, l450, l485, l555 Gb/t3091, sy/t5037, sy/t 5040, cj/t 3022:q195, q215, q235, q275, q295, q345, 08f, 08, 08al, 08f, 10f, 10, hg5, df08 sphc, m8 Size: Lsaw, dsaw: Outer diameter: 219mm-1820mm Wall thickness: 5.0mm-50mm Length: 6mtr-18mtr End:square ends (straight cut, saw cut, and torch cut). Or beveled for welding, beveled, Surface: lightly oiled, hot dip galvanized, electro galvanized, black, bare, varnish coating/anti rust oil, protective coatings (coal tar epoxy, ? fusion bond epoxy, 3-layers pe) Packing:plastic plugs in both ends, hexagonal bundles of max. 2, 000kg with several steel strips, two tags on each bundle, wrapped in waterproof paper, pvc sleeve, and sackcloth with several steel strips, plastic caps. Test:chemical component analysis, mechanical properties (ultimate tensile strength, yield Strength, elongation), technical properties (flattening test, bending test, blow test, impact test), exterior size inspection, hydrostatic test, x-ray test. Sign Size O.D. (mm) Wall thickness (mm) Nominal weight (kg/m) Test pressure (mpa)