Jiangsu Hongbao Group Co., Ltd.
| Supply Ability | 30000MT per year |
| Delivery Time | Within 50 days if production |
| Packaging Details | seaworthy plywooden case packing. |
| Payment Terms | L/C,T/T |
| Material: | ST37.4, ST52.4, E235, E355, 26MnB5, 34MnB5 |
| Brand: | Hongbao |
| Certificate: | TS16949, DNV, PED, ISO |
| Origin: | Jiangsu,China |
| OD: | 6-120mm |
| Thickness: | 0.5-15mm |
| Type: | Welded or Seamless |
| Processing: | Cold Drawn, Cold Rolled |
| Brand Name | Hongbao |
| Model Number | HBPST-1 |
| Certification | TS16949, DNV, PED, ISO |
| Place of Origin | Jiangsu, China |
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Product Specification
| Supply Ability | 30000MT per year | Delivery Time | Within 50 days if production |
| Packaging Details | seaworthy plywooden case packing. | Payment Terms | L/C,T/T |
| Material: | ST37.4, ST52.4, E235, E355, 26MnB5, 34MnB5 | Brand: | Hongbao |
| Certificate: | TS16949, DNV, PED, ISO | Origin: | Jiangsu,China |
| OD: | 6-120mm | Thickness: | 0.5-15mm |
| Type: | Welded or Seamless | Processing: | Cold Drawn, Cold Rolled |
| Brand Name | Hongbao | Model Number | HBPST-1 |
| Certification | TS16949, DNV, PED, ISO | Place of Origin | Jiangsu, China |
| High Light | precision seamless tubing ，erw precision tubes | ||
DIN2391 E235 high precision seamless carbon steel tube for brake pipes is manufactured to precise specifications, ensuring consistent wall thickness, smooth surface, and accurate dimensions. Ideal for automotive brake systems, these tubes provide reliable and efficient fluid transfer, enhancing vehicle safety and performance.
| OD | GB/T3639(GB8713) | DIN2391(EN10305) | Our Tolerance | Best Quality |
|---|---|---|---|---|
| 4-30mm | ±0.10mm | ±0.08mm | ±0.05mm | ±0.02mm |
| 31-40mm | ±0.15mm | ±0.15mm | ±0.05mm | ±0.03mm |
| 41-50mm | ±0.20mm | ±0.20mm | ±0.05mm | ±0.03mm |
| 51-60mm | ±0.25mm | ±0.25mm | ±0.08mm | ±0.03mm |
| 61-70mm | ±0.30mm | ±0.30mm | ±0.10mm | ±0.05mm |
| 71-160mm | ±0.30mm | ±0.30mm | ±0.10mm | ±0.05mm |
| Tolerance in WT | ±0.12mm | ±0.10mm | ±0.05mm | ±0.03mm |
| Process | Diameter | Length | Precision | Inner Hole Roughness |
|---|---|---|---|---|
| Cold Rolled | 30-100mm | ≤12 m | H8-H10 | 0.4-1.6 |
| Cold Draw | 30-250mm | ≤12 m | H8-H10 | 0.8-1.6 |
| Honing | 40-500mm | ≤12 m | H8-H9 | 0.4-0.8 |
| Rolling | 40-400mm | ≤7 m | H8 | 0.4 |
| Inner Diameter | H8 | H9 | H10 | 5-30mm |
|---|---|---|---|---|
| 30mm | ±0.033 | ±0.052 | ±0.084 | ±0.080 |
| 30-50mm | ±0.039 | ±0.062 | ±0.100 | |
| 50-80mm | ±0.046 | ±0.074 | ±0.120 | |
| 80-120mm | ±0.054 | ±0.087 | ±0.140 | |
| 120-180mm | ±0.063 | ±0.100 | ±0.160 | |
| 180-250mm | ±0.072 | ±0.115 | ±0.185 | |
| 250-315mm | ±0.081 | ±0.130 | ±0.210 | |
| 315-400mm | ±0.089 | ±0.140 | ±0.230 |
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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