ERW Hollow Section Steel Pipes 4-200mm OD with ±0.10-1.0mm Tolerance for Structural Applications
Zhengde special-shaped steel pipes are seamless steel pipes with non-circular cross-sections, offering superior structural performance compared to traditional round pipes. These pipes provide enhanced bending and torsion resistance while reducing overall structural weight.
Widely used in structural components, tools, and mechanical parts across various industries including construction, manufacturing, and infrastructure development.
- Oval special-shaped steel pipes
- Triangular special-shaped steel pipes
- Hexagonal special-shaped steel pipes
- Rhombus special-shaped steel pipes
- Octagonal special-shaped steel pipes
- Semi-circular special-shaped steel pipes
- Unequal hexagonal special-shaped steel pipes
- Five-petal plum blossom shaped steel pipes
- Double convex special-shaped steel pipes
- Double concave special-shaped steel pipes
- Melon-shaped special-shaped steel pipes
- Conical special-shaped steel pipes
- Corrugated special-shaped steel pipes
Thickness tolerance: ±10% (minimum ±0.12mm)
| Outer Diameter (mm) | Inner Diameter (mm) | Allowable Deviation (mm) |
|---|---|---|
| 4 | 3 | ±0.30 |
| 6 | 5 | ±0.25 |
| 8 | 7 | ±0.20 |
| 10 | 9 | ±0.15 |
| 12 | 11 | ±0.15 |
| 14 | 13 | ±0.10 |
| 16 | 15 | ±0.10 |
| 25 | 24 | ±0.10 |
| 26 | 25 | ±0.10 |
| 28 | 27 | ±0.10 |
| 30 | 29 | ±0.10 |
| 35 | 34 | ±0.15 |
| 38 | 37 | ±0.15 |
| 40 | 39 | ±0.15 |
| 45 | 43 | ±0.20 |
| 50 | 48 | ±0.20 |
| 55 | 53 | ±0.25 |
| 60 | 58 | ±0.25 |
| 70 | 68 | ±0.30 |
| 76 | 74 | ±0.35 |
| 80 | 78 | ±0.35 |
| 90 | 87 | ±0.40 |
| 100 | 96 | ±0.45 |
| 110 | 106 | ±0.50 |
| 120 | 116 | ±0.50 |
| 150 | - | ±0.75 |
| 180 | - | ±0.90 |
| 200 | - | ±1.0 |
- Quality First: Strict production and inspection according to standards
- Competitive Pricing: Market-based discounts and value pricing
- Transaction Security: Guaranteed fund protection for customers
- After-sales Support: Comprehensive problem resolution
- Long-term Partnership: Consistent quality and service reliability
Shandong Zhengde Metal Manufacturing Co., Ltd. is a comprehensive enterprise integrating production and sales of hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, section steel, steel pipes, steel wires, metal mesh, stainless steel, aluminum, copper and other metal products.
- 5 production and sales bases across China
- Over 100 production lines
- 4 nationally recognized laboratories
- 2 technical engineering centers
- 5 enterprise technology centers
- Global export to 50+ countries and regions
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