ERW Welded Square Tube Carbon Steel Q235 Q345 A36 Special-Shaped Seamless Pipe 4-200mm OD
Zhengde special-shaped steel pipes represent a comprehensive category of seamless steel pipes featuring non-circular cross-sections. These include equal wall thickness, unequal wall thickness, and variable diameter configurations designed for superior structural performance.
Special-shaped seamless steel pipes are extensively utilized in structural components, tools, and mechanical parts. Compared to standard round pipes, they offer significantly higher moment of inertia and section modulus, providing enhanced bending and torsion resistance while reducing structural weight and steel consumption.
- Oval special-shaped steel pipes
- Triangular special-shaped steel pipes
Available thicknesses: 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm, 1.8mm, 2mm
| Outer Diameter (mm) | Inner Diameter Options (mm) |
|---|---|
| 4 | 3±0.30, 2.4±0.30, 2±0.30 |
| 6 | 5±0.25, 4.4±0.25, 4±0.25, 3.6±0.30 |
| 8 | 7±0.20, 6.4±0.20, 6±0.20, 5.6±0.30, 5±0.30, 4.4±0.35, 4±0.35 |
| 10 | 9±0.15, 8.4±0.15, 8±0.20, 7.6±0.25, 7±0.25, 6.4±0.30, 6±0.30 |
| 12 | 11±0.15, 10.4±0.15, 10±0.15, 9.6±0.20, 9±0.20, 8.4±0.25, 8±0.25 |
| 14 | 13±0.10, 12.4±0.10, 12±0.10, 11.6±0.15, 11±0.15, 10.4±0.20, 10±0.20 |
| 16 | 15±0.10, 14.4±0.10, 14±0.10, 13.6±0.10, 13±0.10, 12.4±0.15, 12±0.15 |
| 25 | 24±0.10, 23.4±0.10, 23±0.10, 22.6±0.10, 22±0.10, 21.4±0.10, 21±0.10 |
| 26 | 25±0.10, 24.4±0.10, 24±0.10, 23.6±0.10, 23±0.10, 22.4±0.10, 22±0.10 |
| 28 | 27±0.10, 26.4±0.10, 26±0.10, 25.6±0.10, 25±0.10, 24.4±0.10, 24±0.10 |
| 30 | 29±0.10, 28.4±0.10, 28±0.10, 27.6±0.10, 27±0.10, 26.4±0.10, 26±0.10 |
| 35 | 34±0.15, 33.4±0.15, 33±0.15, 32.6±0.15, 32±0.15, 31.4±0.15, 31±0.15 |
| 38 | 37±0.15, 36.4±0.15, 36±0.15, 35.6±0.15, 35±0.15, 34.4±0.15, 34±0.15 |
| 40 | 39±0.15, 38.4±0.15, 38±0.15, 37.6±0.15, 37±0.15, 36.4±0.15, 36±0.15 |
| 45 | 43±0.20, 42.6±0.20, 42±0.20, 41.4±0.20, 41±0.20 |
| 50 | 48±0.20, 47.6±0.20, 47±0.20, 46.4±0.20, 46±0.20 |
| 55 | 53±0.25, 52.6±0.25, 52±0.25, 51.4±0.25, 51±0.25 |
| 60 | 58±0.25, 57.6±0.25, 57±0.25, 56.4±0.25, 56±0.25 |
| 70 | 68±0.30, 67.6±0.30, 67±0.30, 66.4±0.30, 66±0.30 |
| 76 | 74±0.35, 73.6±0.35, 73±0.35, 72.4±0.35, 72±0.35 |
| 80 | 78±0.35, 77.6±0.35, 77±0.35, 76.4±0.35, 76±0.35 |
| 90 | 87±0.40, 86.4±0.40, 86±0.40 |
| 100 | 96.4±0.45, 96±0.45 |
| 110 | 106±0.50 |
| 120 | 116±0.50 |
| 150 | Available upon request |
| 180 | Available upon request |
| 200 | Available upon request |
Strict production and inspection processes in compliance with international standards
Market-based pricing with volume discounts for cost efficiency
Secure payment processing and financial protection
Comprehensive customer service and technical assistance
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. With five production and sales bases across multiple locations, the company operates over 100 production lines, maintains 4 nationally recognized laboratories, 2 technical engineering centers, and 5 enterprise technology centers. Products are exported to more than 50 countries and regions worldwide.
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