EN10217-7 SS304 1.4301 BA finished Welded Stainless Steel Tube
EN10217-7 SS304 1.4301 Welded Tube,Stainless Steel Tube BA finished
EN10217-7 tubes will be manufactured from hot or cold rolled plate, sheet or strip 1D, 2D, 2E, 2B surface, by longitudinally arc or laser welding.We use automatic TIG welding type to weld tubes, and remove inside seam and external seam, making inner and outer surface more smooth and perfect roughness.
When tube is finished, chemical composition analysis should be carried out according to EN 10217-7, to ensure the correct grade by direct-reading spectrometer or PMI tester.
The tolerance on outside diameter and wall thickness of tubes should be limited according to EN ISO 1127, precise tolerance should be minimized as much as possible, which has a perfect performance for many applications.
EN10217-7 SS304 1.4301 Welded Tube
| 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 To 204 MM |
| Thickness | 0.5 To 4 mM |
Quality Assurance:
Spezilla's 1.4301 welded stainless steel tubes are produced acc. to the following process and inspection to assure our quality:
1. Chemical Composition Analysis Test With 100% PMI.
2. Solution Annealing / Bright Annealed.
3. 100% Hydrostatic Test and 100% Eddy Current Test
4. Mechanical Tests includes Tension Test, Flattening Test, Flaring Test, Hardness Test.
5. Impact Test subject to Standard request.
6. Grain Size Test and Intergranular Corrosion Test.
7. Visual Test and Endoscope Test for Surface Quality Test
Typical Manufacturing Specifications:
ASTM A249
ASTM A269
ASTM A270
EN10217-7
EN10357
Our specialists in the surface treatment department ensure the best workmanship, high surface quality and guaranteed hygiene safety in all common nominal diameters from DN 10 to DN 300. For a consistently high surface quality we rely on a fully automatic pipe grinding shop.
We offer top quality and short delivery times!
Our stainless steel tubes are available in the following versions:
CC: unannealed, etched inside and outside,
CD: unannealed, etched inside and polished outside,
BC: annealed, etched inside and outside,
BD: annealed, etched inside and polished outside,
EN 10217-7 Common Steel Grades And Equivalent AISI Grades
| 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 |
Chemical Composition 1.4301 Welded Stainless Steel Tube:
| Chemical Element | % ( Weight ) |
| Carbon (C) | 0.0 - 0.08 |
| Chromium (Cr) | 17.500 - 19.50 |
| Manganese (Mn) | 0.0 - 2.00 |
| Silicon (Si) | 0.0 - 1.00 |
| Phosphorous (P) | 0.0 - 0.05 |
| Sulphur (S) | 0.0 - 0.03 |
| Nickel (Ni) | 8.00 - 10.50 |
| Nitrogen (N) | 0.0 - 0.11 |
| Iron (Fe) | Balance |
Mechanical Property 1.4301 Welded Stainless Steel Tube:
| Mechanical Property | Value |
| Proof Stress | 190 Min MPa |
| Tensile Strength | 500 to 700 MPa |
| Elongation A50 mm | 45 Min % |
| Hardness Brinell | 215 Max HB |
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