China Steel Pipe Group offers oil coated ERW steel pipes, a specialized option that undergoes a surface treatment with low-viscosity, environmentally-friendly anti-rust oil. This protective oil coating significantly reduces the risk of corrosion, thereby extending the operational lifespan of the pipes under various environmental conditions.
The anti-rust oil finish is applied to each pipe, ensuring a consistent protective barrier across all surfaces, designed to provide both durability and flexibility, accommodating specific requirements for various applications where moisture exposure is a concern, such as in underground or outdoor settings, making it a reliable choice for industries that prioritize longevity and corrosion resistance in their piping systems.
Round tube: 21.3mm to 609.6mm
Square tube: 10×10mm to 200×200mm
Rectangular tube: 20×40mm to 80×120mm
Regular length: 5.8m or 6m or 12m
Custom cut-to-length: 2m to 12m
Plain End
Beveled End
Grooved End
Threaded End
| British Standards: BS 1387-85 XL | |||||
| DN | Designation of Thread | Outside Diameter | Wall Thickness | ||
| (mm) | (inch) | (mm) | (inch) | ||
| 15 | 1/2 | 21.40-21.00 | 0.843-0.827 | 1.80 | 0.071 |
| 20 | 3/4' | 26.90-26.40 | 1.059-1.039 | 2.00 | 0.079 |
| 25 | 1' | 33.80-33.20 | 1.331-1.307 | 2.00 | 0.079 |
| 32 | 1-1/4' | 4250-41.90 | 1673-1.650 | 2.00 | 0.079 |
| 40 | 1-1/2' | 48.40-47.80 | 1.906-1.882 | 2.3 | 0.091 |
| 50 | 2' | 60.20-59.60 | 2.370-2.346 | 2.30 | 0.091 |
| 65 | 2-1/2' | 76.00-7520 | 2.992-2.961 | 2.60 | 0.102 |
| 80 | 3' | 88.70-87.90 | 3.492-3.461 | 2.60 | 0.102 |
| 100 | 4' | 113.90-113.00 | 4.484-4.449 | 3.20 | 0.126 |
| British Standards: BS 1387-85L | |||||
| DN | Designation of Thread | Outside Diameter | Wall Thickness | ||
| (mm) | (inch) | (mm) | (inch) | ||
| 15 | 1/2' | 21.40-21.00 | 0.843-0.827 | 2.00 | 0.079 |
| 20 | 3/4' | 26.90-26.40 | 1.059-1.039 | 2.30 | 0.091 |
| 25 | 1' | 33.80-33.20 | 1.331-1.307 | 2.60 | 0.102 |
| 32 | 1-1/4' | 4250-41.90 | 1.673-1.65 | 2.60 | 0.102 |
| 40 | 1-1/2' | 48.40-47.80 | 1.906-1.882 | 2.90 | 0.11 |
| 50 | 2' | 60.20-59.60 | 2.370-2.346 | 2.90 | 0.114 |
| 65 | 2-1/2' | 76.00-75.20 | 2.992-2.961 | 3.2 | 0.126 |
| 80 | 3' | 88.70-87.90 | 3.492-3.461 | 3.20 | 0.126 |
| 100 | 4' | 113.90=113.00 | 4.484-4.449 | 3.60 | 0.142 |
| British Standards: BS 1387-85 M | ||||||
| DN | Designation of Thread | Outside Diameter | Wall Thickness | |||
| (mm) | (inch) | (mm) | (inch) | |||
| 15 | 1/2' | 21.70-21.10 | 0.854-0.831 | 2.6 | 0.102 | |
| 20 | 3/4' | 27.20-26.60 | 1.071-1.047 | 2.6 | 0.102 | |
| 25 | 1' | 34.20-33.40 | 1.346-1.315 | 3.2 | 0.126 | |
| 32 | 1-1/4' | 42.90-42.10 | 1.689-1.657 | 3.2 | 0.126 | |
| 40 | 1-1/2' | 48.80-48.00 | 1.921-1.890 | 3.2 | 0.126 | |
| 50 | 2' | 60.80-59.80 | 2.394-2.354 | 3.6 | 0.142 | |
| 65 | 2-1/2' | 76.60-75.40 | 3.016-2.969 | 3.6 | 0.142 | |
| 80 | 3' | 89.50-88.10 | 3.524-3.469 | 4 | 0.157 | |
| 100 | 4' | 114.90-113.30 | 4.524-4.461 | 4.5 | 0.177 | |
| 150 | 6' | 166.10-164.10 | 6.539-6.461 | 5 | 0.197 | |
| ANSI Standards: ASTM A53 GRADE A SCH40 | ||||
| NPS | Outside Diameter | Wall Thickness | ||
| (mm) | (inch) | (mm) | (inch) | |
| 1/2' | 21.30 | 0.840 | 2.77 | 0.109 |
| 3/4' | 26.70 | 1.050 | 2.87 | 0.113 |
| 1' | 33.40 | 1.315 | 3.38 | 0.133 |
| 1-1/4' | 42.20 | 1.660 | 3.56 | 0.140 |
| 1-1/2' | 48.30 | 1.900 | 3.68 | 0.145 |
| 2' | 60.30 | 2.375 | 3.91 | 0.154 |
| 2-1/2' | 73.00 | 2.875 | 5.16 | 0.203 |
| 3' | 88.90 | 3.500 | 5.49 | 0.216 |
| 4' | 114.30 | 4.500 | 6.02 | 0.237 |
| 6' | 168.30 | 6.625 | 7.11 | 0.280 |
| 8' | 219.10 | 8.625 | 8.18 | 0.322 |
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Established in 2003, China Steel Pipe Group Corp.,Ltd . is a manufacturer in the steel pipes and PC strand wire industry. Our primary products include ERW pipes, SSAW pipes, LSAW pipes, high-precision welded pipes, prestressed steel wires, and prestressed steel strands. We also offer extensive processing services such as welding, grooving, threading, painting, and coating to meet your specific requirements. Our steel products are widely used in firefighting, cable management, material transportation, steel structures, railings, piling, construction, and machinery manufacturing.
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