Jiangsu Hongbao Group Co., Ltd.
| Supply Ability | 800MT/Month |
| Delivery Time | Negotiable |
| 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 | Erw carbon steel pipe |
| 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 | Negotiable |
| 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 | Erw carbon steel pipe |
| Brand Name | Hongbao | Model Number | HBWS-001 |
| Certification | TS16949, ISO9001 | Place of Origin | Jiangsu, China |
| High Light | welded steel pipe ，cold drawn welded tubes | ||
DOM E155 E195 E235 E275 E355 Carbon Steel Pipe Seamless Hydraulic Tube
Description:
Carbon Steel Pipe Seamless Hydraulic Tube is a high-quality, seamless solution for hydraulic applications, engineered for robust performance. Crafted from durable carbon steel, these tubes offer exceptional strength and reliability in hydraulic systems. With seamless construction, they ensure efficient fluid flow and longevity, making them ideal for demanding hydraulic environments.
Size Range:
O.D.:6-420mm W.T.:1-50mm L:max12000mm
Applications:
Auto industry
Machinery use
Oil cylinder tube
Motorcycle shock absorber
Auto shock absorber
Inner cylinder
Telescopic cylinders
Jack lifting system
Hydraulic cylinders
Appearance:
The internal and external surface finish of the tubes is smooth, while the Weld Seam is somehow not visible or tangible.
The ID surface with roughness Ra≤4μm, the best ID smoothness we could reach Ra≤0.8μm
The inner surface can be measured and reported if this is requested by the purchaser before PO.
Supplying Steel Grade:
E155, E195, E235 E275, E355
Delivery Condition:
+C, +LC, + SR, +A, +N
Production Method:
DOM, ERW+ cold drawn
| Designation | Symbol | Description |
| Cold drawn / hard | +C | Without thermal processing, after the process of cold drawing is finished |
| Cold drawn / soft | +LC | After final thermal processing, appropriate drawing |
| Cold drawn and annealed | +SR | After the final cold drawing process and annealing thermal processing in a controlled atmosphere |
| Annealed | +A | After the final cold drawing process, the pipes are annealed in a controlled atmosphere |
| Normalized | +N | After the final cold drawing process, the pipes are normalized in a controlled atmosphere |
Mechanical properties in room temperature:
| Steel grade | Maximum values depending on the delivery condition | |||||||||||
| +C | +LC | +SR | +A | +N | ||||||||
| Steel symbol | Rm MPa | A % | Rm MPa | A % | Rm MPa | ReH Mpa | A % | Rm MPa | A % | Rm MPa | ReH Mpa | A % |
| E155 | 400 | 6 | 350 | 10 | 350 | 245 | 18 | 260 | 28 | 270 do 410 | 155 | 28 |
| E195 | 420 | 6 | 370 | 10 | 370 | 260 | 18 | 290 | 28 | 300 do 440 | 195 | 28 |
| E235 | 490 | 6 | 440 | 10 | 440 | 325 | 14 | 315 | 25 | 340 do 480 | 235 | 25 |
| E275 | 560 | 5 | 510 | 8 | 510 | 375 | 12 | 390 | 21 | 510 do 550 | 275 | 21 |
| E355 | 640 | 4 | 590 | 6 | 590 | 435 | 10 | 450 | 22 | 490 do 630 | 355 | 22 |
Chemical composition (ladle analysis):
| Steel grade | % of the mass | ||||
| Steel symbol | 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 |
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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