Jiangsu Hongbao Group Co., Ltd.
| Payment Terms | L/C, T/T |
| Delivery Time | 45 - 60 days |
| Packaging Details | Steel box packaging |
| Diameter | 10-160mm |
| Thickness | 0.5-20mm |
| Material | E215, E235, E355, 26MnB5, 34MnB5 |
| Standard | ASTM, JIS, DIN, EN |
| Shape | Round |
| Application | Machinery, auto industry, oil cylinder tube, motorcycle shock absorber |
| Packaging | Steel Box Packaging |
| Brand Name | Hongbao |
| Certification | IATF 16949; ISO 9001 |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T | Delivery Time | 45 - 60 days |
| Packaging Details | Steel box packaging | Diameter | 10-160mm |
| Thickness | 0.5-20mm | Material | E215, E235, E355, 26MnB5, 34MnB5 |
| Standard | ASTM, JIS, DIN, EN | Shape | Round |
| Application | Machinery, auto industry, oil cylinder tube, motorcycle shock absorber | Packaging | Steel Box Packaging |
| Brand Name | Hongbao | Certification | IATF 16949; ISO 9001 |
| Place of Origin | China | ||
| High Light | EN10305-2 E355 welded steel pipe ，precision cold drawn steel tube ，auto industry steel pipe | ||
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
Key Advantages
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
Company Details
Business Type:
Manufacturer
Year Established:
1958
Total Annual:
>76000000
Employee Number:
700~1000
Ecer Certification：
Verified Supplier
Jiangsu Hongbao Group (Pipe) Co., Ltd. (Zhangjiagang Hongda Pipe Co., Ltd.) is a high-tech company in Jiangsu province. The company has a registered capital of RMB 89 million, covers an area of 130,000 square meters, employs 600 staff, and has annual sales of RMB 400 million. The company is speciali... Jiangsu Hongbao Group (Pipe) Co., Ltd. (Zhangjiagang Hongda Pipe Co., Ltd.) is a high-tech company in Jiangsu province. The company has a registered capital of RMB 89 million, covers an area of 130,000 square meters, employs 600 staff, and has annual sales of RMB 400 million. The company is speciali...
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