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Hot rolling (extruded seamless steel pipe): round tube blank → heating → piercing → three-roll cross rolling, continuous rolling or extrusion → tube removal → sizing (or reducing) → cooling → billet tube → straightening → quality inspection Wall thickness→hydraulic test (or flaw detection)→marking→storage.
Cold drawn (rolled) seamless steel pipe: round tube blank→heating→piercing→heading→annealing→pickling→oiling (copper plating)→multi-pass cold drawing (cold rolling)→blank tube→heat treatment→straightening→ Quality inspection wall thickness → hydraulic test (flaw detection) → marking → storage.
Grade | Material Number | C≤ | Cr | Mo | Ni | Other |
X5CrNi18 10 | 1.4301 | 0.07 | 17.0～19.0 | — | 8.5～10.2 | — |
X2CrNi19 11 | 1.4306 | 0.03 | 18.0～20.0 | — | 10.0～12.5 | — |
X2CrNiN18 10 | 1.4311 | 0.03 | 17.0～19.0 | — | 8.5～11.5 | N：0.12～0.22 |
X6CrNiTi18 10 | 1.4541 | 0.08 | 17.0～19.0 | — | 9.0～12.0 | Ti：5×C～0.80 |
X6CrNiNb18 10 | 1.455 | 0.08 | 17.0～19.0 | — | 9.0～12.0 | Nb：10×C～1.003） |
X5CrNiMo17 12 2 | 1.4401 | 0.07 | 16.5～18.5 | 2.0～2.5 | 10.5～13.5 | — |
X2CrNiMo17 13 2 | 1.4404 | 0.03 | 16.5～18.5 | 2.0～2.5 | 11.0～14.0 | — |
X6CrNiMoTi17 12 2 | 1.4571 | 0.08 | 16.5～18.5 | 2.0～2.5 | 10.5～13.5 | Ti：5×C～0.80 |
X2CrNiMoN17 13 8 | 1.4429 | 0.03 | 16.5～18.5 | 2.5～3.0 | 11.5～14.5 | N：0.14～0.22；S≤0.025 |
X2CrNiMo18 14 3 | 1.4435 | 0.03 | 17.0～18.5 | 2.5～3.0 | 12.5～15.0 | S≤0.025 |
X5CrNiMo17 13 3 | 1.4436 | 0.07 | 16.5～18.5 | 2.5～3.0 | 11.0～14.0 | S≤0.025 |
X2CrNiMoN17 13 5 | 1.4439 | 0.03 | 16.5～18.5 | 4.0～5.0 | 12.5～14.5 | N：0.12～0.22;S≤0.025 |
Grade | Material Number | 0.2% Yield Strength MPa≥ | 1% Yield Strength MPa≥ | Tensile Strength MPa | Elongation %≥ | |
Longitudinal | Transverse | |||||
X5CrNi18 10 | 1.4301 | 195 | 230 | 500～720 | 40 | 35 |
X2CrNi19 11 | 1.4306 | 180 | 215 | 460～680 | 40 | 35 |
X2CrNiN18 10 | 1.4311 | 270 | 305 | 550～760 | 35 | 30 |
X6CrNiTi18 10 | 1.4541 | 200 | 235 | 500～730 | 35 | 30 |
X6CrNiNb18 10 | 1.455 | 205 | 240 | 510～740 | 35 | 30 |
X5CrNiMo17 12 2 | 1.4401 | 205 | 240 | 510～710 | 40 | 35 |
X2CrNiMo17 13 2 | 1.4404 | 190 | 225 | 490～690 | 40 | 35 |
X6CrNiMoTi17 12 2 | 1.4571 | 210 | 245 | 500～730 | 35 | 40 |
X2CrNiMoN17 13 3 | 1.4429 | 295 | 330 | 580～800 | 35 | 30 |
X2CrNiMo18 14 3 | 1.4435 | 190 | 225 | 490～690 | 40 | 35 |
X5CrNiMo17 13 3 | 1.4436 | 205 | 240 | 510～710 | 40 | 35 |
X2CrNiMoN17 13 5 | 1.4439 | 285 | 315 | 580～800 | 35 | 30 |
| Outer Diameter | Seamless:6-720mm or Customized | |
| Welded:6-2500mm or Customized | ||
| Wall Thickness | Seamless:0.5-120mm or Customized | |
| Welded:0.5-40mm or Customized | ||
| Length | 1-12m as customer requirement | |
| Technique | Cold Drawn | |
| End/Edge | PE/BE/THR | |
| Material | TP304H, TP309S, TP309H, TP310S, TP310H, TP316, TP316L, TP316N, TP316H, TP317, TP317L, TP321, TP321H, TP347, TP347H, TP347LN, TP348, TP348H, TP405, TP410, TP429, TP430, TP443, TP446, TP409, TPXM-10, SUS304HTB, SUS304LTB,SUS309TB,SUS309STB,SUS310TB,SUS310STB,SUS316TB,SUS316HTB, SUS316HTB, SUS316LTB,SUS316TiTB,SUS317TB,SUS317LTB,SUS836LTB,SUS890LTB,SUS321TB, SUS409LTB, SUS410TB,SUS410TiTB,SUS430TB,SUS430LXTB,SUS430JL1TB,SUS436LTB | |
| Surface Fnished | No.1/2B/BA/Hairline/Polished/Mirror/8K/Color Surface | |
| Standard | ASTM A213,A312,ASTM A269,ASTM A778,ASTM A789,DIN 17456, DIN17457,DIN 17459,JIS G3459,JISG3463,GOST9941,EN10216, BS3605,GB13296 | |
| Application | Pipeline Transport Boiler Pipe Hydraulic/Automobile Pipe Oil/Gas Drilling Food/Beverage/Dairy Products Machinery Industry Chemical Industry Mining Construction & Decoration Special Purpose | |
| Trade Terms | Price terms | FOB,CIF,CFR,CNF |
| Payment terms | T/T,L/C | |
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| ASTM A213 High pressure boiler steel pipe | DIN17457 Stainless Steel Welded Pipe |
| ASTM A312 High pressure boiler steel pipe | DIN 17459 Stainless Steel Welded Pipe |
| ASTM A269 High pressure boiler steel pipe | JIS G3459 stainless seamless steel pipe |
| ASTM A778 High pressure boiler steel pipe | JIS G3463 stainless steel boiler pipe |
| ASTM A789 High pressure boiler steel pipe | GOST9941 stainless seamless steel pipe |
| DIN 17456 stainless seamless steel pipe | EN 10216 Seamless steel tubes for pressure purposes |
Liaocheng Economic and Technological Development Zone, Shandong Province, China
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