Specificaiton 1/2"-28" for seamless, 1/2"-120" for welded Sch10s-sch160 Manufacture standard:  asme/ansi b16.9, b16.28 , din2605 Gb12459(seamless), gb/t13401(welded)sh3408 hg21635(seamless), sh3409 hg23631(welded) Material:  q235a, q235b, 20, 16mn, 12crmo, 15cr5mo, cr5mo, 12cr1mov, O6cr19ni10(0cr18ni9), 00cr19ni10, 0cr18ni9ti, 1cr18ni9ti, 0cr18ni12mo2ti, 022cr19ni10(00cr19ni10), 022cr17ni12mo2(00cr17ni14mo2), 06cr18ni11ti(0cr18ni10ti)astm 403-wp304, wp304l, wp304h, wp316, wp316l, wp321, wp321h, wp347, wp347h, wp317, wp317l, wp316h, wp310s(2520), wp316/316l, wp304/304l, Astm a420-wpl6, wpl3astm a234-wpb, wp5, wp9, wp11, wp22, wp91astm a815-s31803(2205)astm a860(mss sp-75)wphy42, wphy46, wphy52, wphy60, wphy65, wphy70astm b366-wp1925n, wp904l(n08904), wpnc11, wpn wphc276, wpnc, n04400(monel 400), n06600(inconel 600), n10276(hastelloy c-276)1.4301, 1.4307, 1.4401, 1.4404(1.4571(ti)), 1.4541, 1.4541(1.4878), 1.4541, 1.4541(1.4878), 1.4550, 1.4550(1.4912), 1.4462, 1.7335(13crmo45), 1.7380(10crmo910), 1.7362 Manufacture process: extrusion moulding, pressing, cold-working, machining, hot-bending, welded, heat treatment