Jiangsu Hongbao Group Co., Ltd.
| Supply Ability | 60000 MT per Year |
| Delivery Time | 30 Days |
| Packaging Details | Seaworthy Wooden box, customized Packing |
| Shape | Round |
| Application | Automotive Part, Hydraulic System, High-precsion Machining. etc. |
| Delivery Condition | +C,+LC，+SR，+N，+A |
| Standard | DIN2391, DIN2445 |
| Certificate: | TS16949,DNV,PED,ISO |
| Type: | Welded or Seamless |
| Brand Name | Hongbao |
| Certification | TS16949, ISO9001, OHSAS18001 etc. |
| Place of Origin | China |
| Model Number | HBPST-1 |
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Product Specification
| Supply Ability | 60000 MT per Year | Delivery Time | 30 Days |
| Packaging Details | Seaworthy Wooden box, customized Packing | Shape | Round |
| Application | Automotive Part, Hydraulic System, High-precsion Machining. etc. | Delivery Condition | +C,+LC，+SR，+N，+A |
| Standard | DIN2391, DIN2445 | Certificate: | TS16949,DNV,PED,ISO |
| Type: | Welded or Seamless | Brand Name | Hongbao |
| Certification | TS16949, ISO9001, OHSAS18001 etc. | Place of Origin | China |
| Model Number | HBPST-1 | ||
| High Light | precision seamless pipe ，seamless round tubes | ||
Round Steel Pipe DIN2391 DIN2445 St37.4 High Precision Seamless Steel Tubes
Chemical Component
C: ≤0.17%;
Si: ≤0.35%;
Mn: ≤1.2%;
S: ≤0.025%;
P: ≤0.025%;
Mechanical properties:
Tensile strength: 340-480mpa;
Yield strength: ≥235Mpa;
Elongation: ＞25%;
Main Date
| Standard | DIN2391,DIN2445 |
| Material | St37.4 |
| Outer Diameter Range: | 4-120mm |
| Wall Thickness Range: | 0.5-15mm |
NBK(+N): After the final cold drawing operation the tubes are normalized in a controlled atmosphere.
GBK(+A): After the final cold drawing process the tubes are annealed in a controlled atmosphere.
BK(+C): No heat treatment after the final cold drawig process.
BKW(+LC): After the final heat treatment there is a suitable drawing pass.
BKS(+SR): After the final cold drawing process there is a stress relieve heat treatment in a controlled atmosphere.
Surface treatment:
Oil-dip;
Varnish;
Shot Blasting;
As customer's requirements.
lab:
We have our own lab to control the material and the product meet the international standard.
Company Details
Business Type:
Manufacturer
Year Established:
1958
Total Annual:
60000000-80000000
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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