EN 10217-7 1.4301, 1.4307, 1.4404 Welded Tube Specifications
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What is en 10217-7 material?
EN 10217-7 specifies technical delivery conditions for welded stainless steel tubes for pressure and corrosive service at various temperatures. Grades 1.4301 (304), 1.4307 (304L), and 1.4404 (316L) are common austenitic stainless steels used for these tubes, which can be manufactured with various surface finishes and tested to ensure compliance with specifications for industries like food, pharmaceutical, and chemical. The standard requires tests for each lot of tubes, with options for different inspection and testing categories.
EN 10217-7 1.4301, 1.4307, 1.4404 Welded Tube Specifications
| 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 |
EN 10217-7 Welded Stainless Steel Tube Specifications
| Grade | EN No. | Equivalent (AISI/ASTM) | Chemical Composition (max %, unless range given) | Mechanical Properties |
|---|---|---|---|---|
| 1.4301 | X5CrNi18-10 | 304 / TP304 | C ≤ 0.07, Si ≤ 1.00, Mn ≤ 2.00, P ≤ 0.045, S ≤ 0.015, Cr 17.5–19.5, Ni 8.0–10.5 | Yield ≥ 190 MPa, Tensile 500–700 MPa, Elongation ≥ 40% |
| 1.4307 | X2CrNi18-9 | 304L / TP304L | C ≤ 0.030, Si ≤ 1.00, Mn ≤ 2.00, P ≤ 0.045, S ≤ 0.015, Cr 17.5–19.5, Ni 8.0–10.5 | Yield ≥ 200 MPa, Tensile 500–700 MPa, Elongation ≥ 40% |
| 1.4404 | X2CrNiMo17-12-2 | 316L / TP316L | C ≤ 0.030, Si ≤ 1.00, Mn ≤ 2.00, P ≤ 0.045, S ≤ 0.015, Cr 16.5–18.5, Ni 10.0–13.0, Mo 2.0–2.5 | Yield ≥ 220 MPa, Tensile 520–720 MPa, Elongation ≥ 40% |
Testing And Inspection On EN 10217-7 Welded Tube
All the inspection and testing finished on welded tubes, 3.1 type Mill Test Certificate should be provided according to EN 10204, The quality control department guarantees tubes high quality and good performance in various applications.
Tensile test
Flattening test
Leak tightness test
Dimensional inspection
Visual examination
Eddy current
Ultrasonic test
Radiographic test
GNEE produces welded stainless steel pipes for pressure purposes, manufactured and designed in accordance with EN 10217 Part 7. The welded pipes are made of austenitic or austenitic-ferritic stainless steel, with stainless steel grades including 1.4301, 1.4307, 1.4404, 1.44.1, and 1.4571, suitable for various industries and usable not only at room temperature but also in low-temperature and high-temperature environments. Delivery conditions include W1R, W2Rb, W2Ab, and other surface treatments, with pipe inspection and testing conducted using Test Category 1 (TC1) or Test Category 2 (TC2).
