ASTM A56 Hot Rolled Rectangular Steel Tube 20x20mm to 100x70mm with Wall Thickness 1.5-8mm for Structural Applications
Zhengde seamless rectangular tubes feature hollow sections with no seams around the perimeter. These structural steel pipes offer superior material utilization for manufacturing ring components, simplifying production processes while saving materials and labor costs.
| Dimension A (mm) | Dimension B (mm) | Wall Thickness S (mm) | Area (cm²) | Weight (kg/m) |
|---|---|---|---|---|
| 36 | 18 | 1.5 | 1.49 | 1.17 |
| 36 | 18 | 2 | 1.93 | 1.52 |
| 36 | 18 | 2.5 | 2.34 | 1.84 |
| 36 | 18 | 3 | 2.73 | 2.14 |
| 36 | 18 | 3.5 | 3.08 | 2.42 |
| 50 | 32 | 2 | 3.05 | 2.4 |
| 50 | 32 | 2.5 | 3.74 | 2.94 |
| 50 | 32 | 3 | 4.41 | 3.46 |
| 70 | 50 | 4 | 8.69 | 6.82 |
| 70 | 50 | 5 | 10.57 | 8.3 |
| 70 | 50 | 6 | 12.34 | 9.69 |
| 70 | 50 | 7 | 14 | 10.99 |
| 80 | 60 | 4 | 10.29 | 8.07 |
| 80 | 60 | 5 | 12.57 | 9.87 |
| 80 | 60 | 6 | 14.74 | 11.57 |
| 80 | 60 | 7 | 16.8 | 13.19 |
| 90 | 60 | 4 | 11.09 | 8.7 |
| 90 | 60 | 5 | 13.57 | 10.65 |
| 90 | 60 | 6 | 15.94 | 12.52 |
| 90 | 60 | 7 | 18.2 | 14.29 |
| 100 | 70 | 5 | 15.57 | 12.22 |
| 100 | 70 | 6 | 18.34 | 14.4 |
| 100 | 70 | 7 | 21 | 16.48 |
| 100 | 70 | 8 | 23.54 | 18.48 |
Our rectangular seamless steel pipes are produced using advanced three-roll mill technology for hot-rolling seamless steel pipe manufacturing. This process delivers exceptional dimensional accuracy through cross-rolling with mandrel technology, ensuring multiple rolling actions in a single pass for superior wall thickness precision.
- Minimizes defects such as scratches, ears, and green lines
- Enhanced production flexibility with roll clutch adjustment capabilities
- Consistent quality across all production batches
We maintain substantial standing inventory including carbon rectangular seamless tubes, seamless special-shaped tubes, alloy seamless tubes, and precision tubes. Available specifications range from 5-426mm diameter with wall thickness of 0.5-60mm and lengths of 2-16m.
Our cold-rolled precision bright tubes feature smooth exterior surfaces, uniform wall thickness distribution, and complete absence of oxide layers.
Every rectangular seamless steel pipe undergoes rigorous quality control. We ensure surface integrity with no cracks or scars, and maintain consistent wall thickness throughout each pipe section.
- Engineering construction and structural frameworks
- Glass curtain walls and architectural applications
- Automotive manufacturing and machinery components
- Shipbuilding, container manufacturing, and aerospace
- Power generation, agricultural construction, and greenhouses
- Fitness equipment, furniture manufacturing, and industrial shelving
- Fluid transport systems for water, gas, and industrial applications
- Quality First: Strict adherence to ASTM A56 production standards
- Competitive Pricing: Market-based discounts and transparent pricing
- Transaction Security: Guaranteed fund protection for all customers
- Comprehensive After-sales: Dedicated support for customer requirements
- Long-term Partnership: Consistent quality and service reliability
Shandong Zhengde Metal Manufacturing Co., Ltd. is an integrated enterprise specializing in hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, section steel, steel pipes, and various metal products.
- Five production bases across Binzhou, Liaocheng, Wuxi, Tianjin, Jinan and Tai'an
- Over 100 production lines with advanced manufacturing capabilities
- 4 nationally recognized laboratories and 7 technical centers
- Global export network spanning 50+ countries worldwide
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.