TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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EN10305 E235 E355 Precision Seamless Steel Tube For Hydraulic Pneumatic Systems
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Steel Grade
| C | Si | Mn | P | S | Al | |
| Name | Number | max | max | max | max | max | max |
| E215 | 1.0212 | 0.1 | 0.05 | 0.7 | 0.025 | 0.015 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.2 | 0.025 | 0.015 | - |
| E355 | 1.0580 | 0.22 | 0.55 | 1.6 | 0.025 | 0.015 | - |
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Steel Grade
| Yield Strength | Tensile Strength | Elongation | |
| Name | Number | Min Mpa | Min Mpa | % |
| E215 | 1.0212 | 215 | 290-430 | 30 |
| E235 | 1.0308 | 235 | 340-480 | 25 |
| E355 | 1.0580 | 355 | 490-630 | 22 |
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OD
| Allowed Tolerance | Special Tolerance | ||
|
GB/T3639
| DIN2391 | OD | WT | |
| 4mm-20mm | ±0.1mm | ±0.08mm | ±0.05mm | ±0.05mm |
| 20mm-30mm | ±0.1mm | ±0.08mm | ±0.08mm | ±0.08mm |
| 31mm-40mm | ±0.15mm | ±0.15mm | ±0.10mm | ±0.08mm |
| 41mm-60mm | ±0.2mm | ±0.20mm | ±0.15mm | ±0.15mm |
| 61mm-80mm | ±0.3mm | ±0.30mm | ±0.20mm | ±0.20mm |
| 81mm-120mm | ±0.45mm | ±0.45mm | ±0.30mm | ±0.30mm |
