Jiangsu Hongbao Group Co., Ltd.
| Shape | Round |
| Type | Welded or Seamless |
| OD | 6-80mm |
| Payment Terms | L/C,T/T |
| Material | E355 |
| WT | 0.5-10mm |
| Supply Ability | 60000 MT per Year |
| Delivery Time | 30-45 Days |
| Packaging Details | Seaworthy wooden box, customized packing |
| Standard | EN10305-2 |
| Brand Name | Hongbao |
| Model Number | HB-WT-001 |
| Certification | TS16949, ISO9001, OHSAS18001 etc. |
| Place of Origin | Jiangsu, China |
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Product Specification
| Shape | Round | Type | Welded or Seamless |
| OD | 6-80mm | Payment Terms | L/C,T/T |
| Material | E355 | WT | 0.5-10mm |
| Supply Ability | 60000 MT per Year | Delivery Time | 30-45 Days |
| Packaging Details | Seaworthy wooden box, customized packing | Standard | EN10305-2 |
| Brand Name | Hongbao | Model Number | HB-WT-001 |
| Certification | TS16949, ISO9001, OHSAS18001 etc. | Place of Origin | Jiangsu, China |
| High Light | welding round tubing ，cold drawn welded tubes | ||
With high dimension accuracy and fine surface quality, cold drawn precision steel tubing is ideal for hydraulic and pneumatic systems. Both seamless and welded cold drawn tubes are used for cylinders with smooth surfaces. BS EN 10305-2 grade E355 is specifically designed for precision applications and serves as an excellent material for barrels and cylinders.
| Steel Grade | Steel Number | C max | Si max | Mn | P max | S max | Al min |
|---|---|---|---|---|---|---|---|
| E215 | 1.0212 | 0.10 | 0.05 | 0.70 | 0.025 | 0.025 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.20 | 0.025 | 0.025 | - |
| E355 | 1.0580 | 0.22 | 0.55 | 1.60 | 0.025 | 0.025 | - |
Produced by cold drawing over mandrel and die on ERW welded steel tube to achieve superior tolerance and excellent concentricity. Both outside and inside weld seams are completely removed during the cold drawing process.
Material: E355
Alternative Material: E235
Standard: EN10305-2
Technique: Cold Drawn
Outside Diameter: 6-80 mm
Wall Thickness: 0.5-10 mm
+C: No heat treatment after final cold drawing process
+LC: Suitable drawing pass after final heat treatment
+SR: Stress relieve heat treatment in controlled atmosphere after final cold drawing
+A: Annealed in controlled atmosphere after final cold drawing
+N: Normalized in controlled atmosphere after final cold drawing operation
High precision steel tubes are widely used in:
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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