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The production process of straight seam welded pipe is simple, with high production efficiency, low cost, and rapid development. The strength of spiral welded pipes is generally higher than that of straight seam welded pipes. Narrow billets can be used to produce larger diameter welded pipes, and billets of the same width can also be used to produce welded pipes of different diameters. However, compared to straight seam pipes of the same length, the weld length increases by 30-100% and the production speed is lower. Therefore, smaller diameter welded pipes mostly use straight seam welding, while larger diameter welded pipes mostly use spiral welding.Straight seam welded pipes are divided into longitudinal submerged arc welding (LSAW) and electric resistance welding (ERW).
Product Descripation
| Outer Diameter | Round pipe: 21.3~219.1mm |
| Wall Thickness | Round pipe thickness: 1.5mm~18.0mm |
| Length | 3-12M according to client requirement |
| Standard | EN10255, EN10219, EN10210, EN39, BS1387, ASTM A53, ASTM A500, ASTM A36, API 5L, ISO 65, JIS G3444, JIS3452, DIN 3444, ANSI C80.1, AS 1074, GB/T 3091 |
| Material |
Gr.A, Gr.B, Gr.C, S235, S275, S355, A36, SS400, Q195, Q235, Q345 |
| Certificate | ISO 9001:2008,SGS, BV, CCIC etc |
| Finish of pipe |
Hot dipped galvanized with zinc 200~260g/m2; Pre-Galvanized with zinc 30~150g/m2 Painted with black/varnish lacquer; Oil on the surface to prevent rust; Bare pipe without painting: Epoxy painting/FBE coating/3PE coating |
| Marking |
As per client requirement or mill standard Painting method: Spray white paint |
| Packing |
OD not less than 273mm: Loose packing,piece by piece. OD less than 273mm: In hexagonal seaworthy bundles packed by steel strips. small sizes nested into big sizes. |
| Applications |
Construction / building materials steel pipe Steel structure Scaffolding pipe Fence post steel pipe Fire protection steel pipe Greenhouse steel pipe Low pressure liquid, water, gas, oil, line pipe Irrigation pipe Handrail pipe |
| Techinical | ERW (high - frequency welded) |
| Trade Term | FOB, CFR, CIF, EXW, FCA |
| Delivery Time | 15-45 days (based on quantity) after receiving advanced payment by T/T or LC . |
| Payment Term | T/T, LC |
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