EN10305-2 E355 E235 Welded Steel Pipe , Precision Cold Drawn Steel Pipe for Auto Industry
EN10305-2 E355 E235 Welded Steel Pipe , Precision Cold Drawn Steel Pipe for Auto Industry
Description
The EN10305-2 precision cold drawn steel pipe represents a premium solution for the automotive industry, combining advanced manufacturing processes with stringent quality control to deliver superior performance in critical applications. Manufactured in accordance with European standard EN10305-2, these welded precision tubes are produced from electric resistance welded (ERW) pre-tubes that undergo a precision cold drawing process. This method enhances dimensional accuracy, improves surface finish, and refines the grain structure, resulting in a product that offers performance characteristics comparable to seamless tubing at a more cost-effective price point.
Steel Grades
- E195 (1.0034)
- E235 (1.0308)
- E275 (1.0225)
- E355 (1.0580)
- E215 (1.0212)
Key Advantages
- High concentricity and dimensional precision
- Cost-effective alternative to seamless tubes
- Consistent mechanical properties
- Suitable for high-stress mechanical applications
Chemical Composition (max values, % by weight)
| Steel Grade | Steel Number | C | Si | Mn | P | S |
|---|---|---|---|---|---|---|
| E195 | 1.0034 | 0.15 | 0.35 | 0.70 | 0.025 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.20 | 0.025 | 0.025 |
| E275 | 1.0225 | 0.21 | 0.35 | 1.40 | 0.025 | 0.025 |
| E355 | 1.0580 | 0.22 | 0.35 | 1.60 | 0.025 | 0.025 |
Mechanical Properties (Minimum Values at Room Temperature)
| Steel Grade | Delivery Condition | Rm (MPa) | ReH (MPa) | A (%) |
|---|---|---|---|---|
| E195 | +C | 420 | ≥0.8 Rm | 6 |
| +LC | 370 | ≥0.7 Rm | 10 | |
| +SR | 370 | 260 | 18 | |
| E235 | +C | 490 | ≥0.8 Rm | 6 |
| +LC | 440 | ≥0.7 Rm | 10 | |
| +SR | 440 | 325 | 14 | |
Testing & Inspection
- Tensile test
- Flattening test
- Drift expanding test
- Dimensional inspection
- Roughness measurement
- Visual examination
- Non-destructive testing
- Leak-tightness testing
Get in Touch
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