Jiangsu Hongbao Group Co., Ltd.
| Supply Ability | 800MT/Month |
| Delivery Time | Within 50 days if production |
| Packaging Details | Wooden Cases |
| Payment Terms | L/C,T/T |
| Material | E355 |
| Length | Random or fixed length |
| Shape | Round |
| Technical | Seamless or welded |
| Standard | EN10305-1, EN10305-2 etc |
| High Light | Welded steel tube |
| Brand Name | Hongbao |
| Model Number | HBWS-001 |
| Certification | TS16949, ISO9001 |
| Place of Origin | Jiangsu, China |
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Product Specification
| Supply Ability | 800MT/Month | Delivery Time | Within 50 days if production |
| Packaging Details | Wooden Cases | Payment Terms | L/C,T/T |
| Material | E355 | Length | Random or fixed length |
| Shape | Round | Technical | Seamless or welded |
| Standard | EN10305-1, EN10305-2 etc | High Light | Welded steel tube |
| Brand Name | Hongbao | Model Number | HBWS-001 |
| Certification | TS16949, ISO9001 | Place of Origin | Jiangsu, China |
| High Light | welded steel pipe ，cold drawn welded tubes | ||
EN10305-2 Cold Drawn Welded Precision Steel Tubes DOM tubing E155, E195, E235, E275, E355 +C +LC +SR +A +N
DOM (Drawn Over Mandrel) is a manufacturing process applied to tubing after initial construction. This process creates tubing with characteristics similar to seamless tubes, providing high strength and superior quality. Available in materials including E155, E195, E235, E275, E355, 1020, 1026, and others. DOM tubing is commonly used in automotive components and applications requiring precision dimensions.
| Steel Grade | Steel Number | C max | Si max | Mn max | P max | S max |
|---|---|---|---|---|---|---|
| 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 |
Rm: tensile strength; ReH: upper yield strength; A: elongation after fracture
1 MPa = 1 N/mm²
Depending on the degree of cold work in the finishing pass, the yield strength may approach the tensile strength. For calculation purposes: for delivery condition +C: ReH ≥ 0.8 Rm; for delivery condition +LC: ReH ≥ 0.7 Rm; for delivery condition +SR/A/N: ReH ≥ 0.5 Rm
Cold rolling using Cold Pilger machines and Cold rolling machines
Size range: 20-350mm
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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