The introduction of international advanced new stainless steel welded pipe production line, Φ630 automatic continuous production line unit and multiple sets of single-sided welding and double-sided forming German plasma welding and submerged arc welding units, the production of welded pipes can be divided into single straight seam, double straight seam and ring Seam butt joint: single seam (φ6mm-φ1422mm), wall thickness from 0.2mm to 40mm; double seam (φ630-φ2020) wall thickness from 2mm to 80mm, annular seam (above Φ630), wall thickness from 2mm to 100mm. At present, the main materials used by the company are: nickel-based stainless steel (NO8904, N06600, N08825, etc.), duplex stainless steel (S32750, S31803, S32205), austenitic stainless steel (310S, 309S, 316L, 321, 304L, 304, etc.), iron Element body (430, 409L, etc.), copper-nickel alloy (C70600, C70620) and some special steel grades (254SMO, S30815, 253MA)
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