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 | 26MnB5 |
| Length | Random or fixed length |
| Shape | Round |
| Technical | Seamless or welded |
| Standard | EN10305-1, EN10305-2 etc |
| High Light | Precision 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 | 26MnB5 | Length | Random or fixed length |
| Shape | Round | Technical | Seamless or welded |
| Standard | EN10305-1, EN10305-2 etc | High Light | Precision 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 34MnB5 Precision Steel Tube is a round annealed steel tube specifically designed for camshaft stabilizer bar applications. These carbon steel tubes, also known as mild steel pipes and tubes, are manufactured according to EN specifications with low carbon content (max 0.17%) combined with manganese, making them easy to form and shape.
| Dimension/Standard | EN 10305 E235, E215, E275 & E355 |
|---|
| EN 10305-1 | E215, E235, E255, E355, E410, 26Mn5, 26Mo2, C35E, C45E, 25CrMo4, 42CrMo4; 25CrMo4 |
|---|---|
| ASTM 519 SAE | 1008, 1010, 1012, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1025, 1026, 1030, 1035, 1040, 1045, 1050, 1518, 4130, 4140, 4142, 8617 |
| JIS G3445 | STKM11A, STKM12A, STKM12B, STKM12C, STKM13A, STKM13B, STKM13C, STKM14A, STKM14B, STKM14C, STKM15A, STKM15C, STKM16A, STKM16C, STKM17A, STKM17C, STKM18A, STKM18B, STKM18C, STKM19A, STKM19C, STKM20A |
Straightness of the tubes is influenced by the mechanical properties. For material with yield point ReH ≤ 500 MPa, straightness is 0.0015 multiple of tube length maximum (1.5 mm per meter). For material with yield point ReH > 500 MPa, allowable straightness is 0.0020 multiple of tube length (2 mm per meter).
| Steel Grade | +C | +LC | +SR | +A | +N |
|---|---|---|---|---|---|
| E155 | 400 MPa, 6% | 350 MPa, 10% | 350 MPa, 245 MPa, 18% | 260 MPa, 28% | 270-410 MPa, 155 MPa, 28% |
| E195 | 420 MPa, 6% | 370 MPa, 10% | 370 MPa, 260 MPa, 18% | 290 MPa, 28% | 300-440 MPa, 195 MPa, 28% |
| E235 | 490 MPa, 6% | 440 MPa, 10% | 440 MPa, 325 MPa, 14% | 315 MPa, 25% | 340-480 MPa, 235 MPa, 25% |
| E275 | 560 MPa, 5% | 510 MPa, 8% | 510 MPa, 375 MPa, 12% | 390 MPa, 21% | 510-550 MPa, 275 MPa, 21% |
| E355 | 640 MPa, 4% | 590 MPa, 6% | 590 MPa, 435 MPa, 10% | 450 MPa, 22% | 490-630 MPa, 355 MPa, 22% |
| Steel Grade | C max | Si max | Mn max | P max | S max |
|---|---|---|---|---|---|
| E155 | 0.11% | 0.35% | 0.70% | 0.025% | 0.025% |
| E195 | 0.15% | 0.35% | 0.70% | 0.025% | 0.025% |
| E235 | 0.17% | 0.35% | 1.20% | 0.025% | 0.025% |
| E275 | 0.21% | 0.35% | 1.40% | 0.025% | 0.025% |
| E355 | 0.22% | 0.35% | 1.60% | 0.025% | 0.025% |
| Designation | Symbol | Description |
|---|---|---|
| Cold finished (hard) | BK | Tubes do not undergo heat treatment following final cold forming, providing high resistance to deformation |
| Cold finished (soft) | BKW | Final heat treatment followed by cold drawing with limited deformation, allowing certain cold forming |
| Cold finished and stress-relieved | BKS | Heat treatment applied after last cold forming process, enabling forming and machining |
| Annealed | GBK | Last cold forming process followed by annealing in controlled atmosphere |
| Normalized | NBK | Last cold forming process followed by annealing above upper transformation point in controlled atmosphere |
Auto industry, machinery use, oil cylinder tube, motorcycle shock absorber, auto shock absorber, inner cylinder, telescopic cylinders, jack lifting system, hydraulic cylinders
The internal and external surface finish of the tubes is smooth, with weld seam not visible or tangible. ID surface roughness Ra≤4μm, with best achievable smoothness Ra≤0.8μm. Inner surface can be measured and reported if requested by purchaser before PO.
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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