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, TUV, LR |
| Origin: | Jiangsu,China |
| OD: | 6-120mm |
| Thickness: | 0.5-15mm |
| Length: | 18000mm Max. |
| Shape: | Round |
| Brand Name | Hongbao |
| Model Number | HBPST-1 |
| Certification | TS16949, DNV, PED, ISO, TUV, LR |
| 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, TUV, LR | Origin: | Jiangsu,China |
| OD: | 6-120mm | Thickness: | 0.5-15mm |
| Length: | 18000mm Max. | Shape: | Round |
| Brand Name | Hongbao | Model Number | HBPST-1 |
| Certification | TS16949, DNV, PED, ISO, TUV, LR | Place of Origin | Jiangsu, China |
| High Light | precision steel pipe ，precision seamless tubing | ||
Our DIN2391 E355 cold drawn seamless precision steel tube is a high-strength, precision-crafted product manufactured from E355 steel. This round steel pipe features precise dimensions, tight tolerances, and excellent mechanical properties. The cold drawing process ensures a smooth, consistent surface finish, making it ideal for hydraulic systems, fuel lines, and pneumatic equipment.
| Material Type | Standard | Grades |
|---|---|---|
| Carbon Steel | ASTM A519 Standard | MT1010, MT1020, 1008, 1010, 1018, 1020, 1025, 1030, 1045, 1518 |
| Carbon Steel | JIS G3445 Standard | STKM11A, STKM12A, STKM12B, STKM12C, STKM13A, STKM13B, STKM13C, STKM14A, STKM14B |
| Carbon Steel | JIS G3473 Standard | STC370, STC440, STC510A, STC510, STC540 |
| Carbon Steel | DIN 2391 Standard | St 35, St45, St52 |
| Carbon Steel | EN 10297-1 Standard | E235, E275, E315, E355, E470 |
| Carbon Steel | EN 10305-1 Standard | E215, E235, E355 |
| Carbon Steel | EN 10305-4 Standard | E215, E235, E355 |
| Carbon Steel | BS 6323-3 Standard | HFS 3, HFS 4, HFS 5, HFS 8 |
| Carbon Steel | NF A49-311 | TU 37-b, TU 52-b, TU 56-b, TU XC35 |
| Alloy Steel | ASTM A519 Standard | 1345, 3140, 4130, 4135, 4140, 4150, 4320, 4340, 5120, 5130 |
| Alloy Steel | JIS G3429 Standard | STH11, 12 STH21, 122 STH31 |
| Alloy Steel | JIS G3441 Standard | SCR420TK, SCM415TK, SCM418TK, SCM420TK, SCM430TK, SCM440TK |
| Stainless Steel | ASTM A511 Standard | MT304, MT304L, MT310S, MT316, MT316L, MT317, MT321, MT347, MT403, MT410, MT431 |
| Stainless Steel | ISO Standard | NACE MR-0175 |
| Parameter | Size Range | Tolerance |
|---|---|---|
| OD (Outer Diameter) | 6-325mm | -0.035 -- +0.045mm |
| ID (Inner Diameter) | 2-250mm | ±0.035mm |
| WT (Wall Thickness) | 1-32mm | Depends on sizes |
| Length | Random or fixed length | +0-3.5mm |
| Straightness | 0.15:1000, 0.4:1000, 0.5:1000, 1:1000 or customized | |
| Surface Roughness | Ra 0.02--0.4μm | |
With approximately 20 years of experience in steel production, our company specializes in manufacturing various cold drawn precision welded steel tubes and hydraulic precision cylinder tubes.
Widely used in machinery, automotive & aerospace industry, bicycles, furniture, apparatus, other mechanical parts and structures, and related applications.
Round Cold Drawn Welded Precision DOM Steel Tubes are manufactured according to EN10305-2 technical specifications for cold drawn welded precision steel tubes DOM tubing, with steel grades of E155, E195, E235, E275, E355 and delivery conditions of +C, +LC, +SR, +A, +N.
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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