Reliable Steel is a leading distributors and exporter of EN 10217 - 7 pipes in mostly countries. We offer best quality EN 10217 - 7 which is most durable and cost-effective. We fabricated EN 10217 - 7 in various sizes and lengths, by using best grade of stainless steel. They are being used in areas such as petroleum, chemical, aviation, power, papermaking, boiler heat-exchanger and so on.
Email us Whatsapp us Call usEN 10217-7 is the material standard for stainless steels for welded tubes for pressure purposes. The tubes will be manufactured from hot or cold rolled plate, sheet or strip 1D, 2D, 2E, 2B surface, by longitudinally arc or laser welding. DONGSHANG stainless offer descaled, heat treated, bright annealing condition welded tubes, like symbol W2(b), W2A(b), W2R(b).
| Standard | EN 10217-7 |
|---|---|
| Tube Type | Welded Tube |
| Grades | 1.4301, 1.4307, 1.4404, 1.4541, 1.4571, 1.4462 |
| Finishing | As Welded, Annealing Pickling, Bright Annealing, Polished |
| Outside Diameter | 6 Up To 508 Mm |
| Thickness | 0.5 Up To 8 Mm |
| Steel Name | Steel Number | AISI Grade |
|---|---|---|
| X2CrNi18-9 | 1.4307 | 304L |
| X5CrNi18-10 | 1.4301 | 304 |
| X2CrNiMo17-12-2 | 1.4404 | 316L |
| X6CrNiTi18-10 | 1.4541 | 321 |
| X6CrNiMoTi17-12-2 | 1.4571 | 316Ti |
| X2CrNiMo18-15-4 | 1.4438 | 317L |
| X2CrNiMoN22-5-3 | 1.4462 | 2205 |
| Designation | Chemical composition (% by mass – max unless stated) | ||||||||||||
| Steel name | Steel No. | C | Si | Mn | P | S | Cr | Mo | Ni | Cu | N | Other | |
| Austenitic steel | |||||||||||||
| X2CrNi18-9 | 1.4307 | 0.03 | 1.00 | 2.0 | 0.045 | 0.015 | 17.50 /19.5 |
– | 8.0 /10.0 |
– | 0.11 | – | |
| X2CrNi19-11 | 1.4306 | 0.03 | 1.00 | 2.0 | 0.045 | 0.015 | 18.00 /20.0 |
– | 10.0 /12.0 |
– | 0.11 | – | |
| X2CrNiN18-10 | 1.4311 | 0.03 | 1.00 | 2.0 | 0.045 | 0.015 | 17.00 /19.5 |
– | 8.50 /11.5 |
– | 0.12 /0.22 |
– | |
| X5CrNi18-10 | 1.4301 | 0.07 | 1.00 | 2.0 | 0.045 | 0.015 | 17.00 /19.5 |
– | 8.00 /10.5 |
– | 0.11 | – | |
| X6CrNiTi18-10 | 1.4541 | 0.08 | 1.00 | 2.0 | 0.045 | 0.015 | 17.00 /19.0 |
– | 9.00 /12.0 |
– | – | Ti 5xC /0.70 |
|
| X6CrNiNb18-10 | 1.4550 | 0.08 | 1.00 | 2.0 | 0.045 | 0.015 | 17.00 /19.0 |
– | 9.00 /12.0 |
– | – | Nb 10xC /1.00 |
|
| X2CrNiMo17-12-2 | 1.4404 | 0.03 | 1.00 | 2.0 | 0.045 | 0.015 | 16.50 /18.5 |
2.0 /2.5 |
10.00 /13.0 |
– | 0.11 | – | |
| X5CrNiMo17-12-2 | 1.4401 | 0.07 | 1.00 | 2.0 | 0.045 | 0.015 | 16.50 /18.5 |
2.0 /2.5 |
10.00 /13.0 |
– | 0.11 | – | |
| XCrNiMoTi17-12-2 | 1.4571 | 0.08 | 1.00 | 2.0 | 0.045 | 0.015 | 16.50 /18.5 |
2.0 /2.5 |
10.50 /13.5 |
– | – | Ti 5xC /0.70 |
|
| Outside Diameter D Mm | Tolerance On Outside Diameter D | Tolerance On Wall Thickness T | ||
|---|---|---|---|---|
| Tolerance Class | Permissible Deviation | Tolerance Class | Permissible Deviation | |
| D ≤ 168,3 | D3 | ± 0,75 % Or ± 0,3 Mm Whichever Is The Greater | T3 | ± 10 % Or ± 0,2 Mm Whichever Is The Greater |
| D4a | ± 0,5 % Or ± 0,1 Mm Whichever Is The Greater | |||
| D >168,3 | D2 | ± 1,0 % | ||