Jiangsu Hongbao Group Co., Ltd.
Jiangsu Hongbao Group Co., Ltd. Manufacture since 1958
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High Strength Hollow Steel Tube E235 Precision Welded Steel Pipe For Automobile
Description:
| Steel Grade | C | Si | Mn | P | S |
| E155 (1.0033) | 0.11 | 0.35 | 0.70 | 0.025 | 0.025 |
| 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 |
Deliver condition:
1) +C No heat treatment after the final cold drawig process
2) +LC After the final heat treatment there is a suitable drawing pass
3) +SR After the final cold drawing process there is a stress relieve heat treatment in a controlled atmosphere
4) +A After the final cold drawing process the tubes are annealed in a controlled atmosphere
5) +N After the final cold drawing operation the tubes are normalized in a controlled atmosphere
Please specifiy the final heat treatment when sending the enquiry.