A53 A178 A252 A358 Welded Steel Pipe 21.3-630mm Diameter 2.75-9mm Wall Thickness for Industrial Applications
Zhengde welded steel pipes are manufactured by rolling and welding steel plates or strips. Available in straight seam and spiral weld configurations, these pipes offer versatile solutions for industrial applications with options for arc welding, resistance welding, gas welding, and furnace welding production methods.
| DN Size | Welded Pipe (Standard) | Welded Pipe (Thickened) | Seamless Pipe (Hot Rolled) | Spiral Welded Pipe |
|---|---|---|---|---|
| DN15 | 21.3×2.75 (1.25 kg/m) | 21.3×3.25 (1.44 kg/m) | ---- | ---- |
| DN20 | 26.8×2.75 (1.63 kg/m) | 26.8×3.5 (2.01 kg/m) | ---- | ---- |
| DN25 | 33.5×3.25 (2.42 kg/m) | 33.5×4 (2.91 kg/m) | 32×3.5 (2.46 kg/m) | ---- |
| DN32 | 42.3×3.25 (3.13 kg/m) | 42.3×4 (3.77 kg/m) | 38×3.5 (2.98 kg/m) | ---- |
| DN40 | 48×3.5 (3.84 kg/m) | 48×4.25 (4.58 kg/m) | 45×3.5 (3.58 kg/m) | ---- |
| DN50 | 60×3.5 (4.88 kg/m) | 60×4.5 (6.16 kg/m) | 57×3.5 (4.62 kg/m) | ---- |
| DN65 | 75.5×3.75 (6.64 kg/m) | 75.5×4.5 (7.88 kg/m) | 73×4 (6.81 kg/m) | ---- |
| DN80 | 88.5×4 (8.34 kg/m) | 88.5×4.75 (9.81 kg/m) | 89×4 (8.38 kg/m) | ---- |
| DN100 | 114×4 (10.85 kg/m) | 114×5 (13.44 kg/m) | 108×4 (10.26 kg/m) | ---- |
| DN125 | 140×4.5 (15.04 kg/m) | 140×4.5 (18.24 kg/m) | 133×4 (12.72 kg/m) | ---- |
| DN150 | 165×4.5 (17.81 kg/m) | 165×5.5 (21.63 kg/m) | 159×4.5 (17.14 kg/m) | 168×5 (20.1 kg/m) |
| DN200 | ---- | ---- | 219×6 (31.52 kg/m) | 219×5 (31.52 kg/m) |
| DN250 | ---- | ---- | 273×8 (52.28 kg/m) | 273×7 (45.92 kg/m) |
| DN300 | ---- | ---- | 325×8 (62.54 kg/m) | 325×7 (54.9 kg/m) |
| DN350 | ---- | ---- | 377×9 (81.67 kg/m) | 377×7 (63.87 kg/m) |
| DN400 | ---- | ---- | 426×9 (92.55 kg/m) | 426×7 (72.33 kg/m) |
| DN450 | ---- | ---- | 480×9 (104.53 kg/m) | 478×7 (81.31 kg/m) |
| DN500 | ---- | ---- | 530×9 (115.62 kg/m) | 529×7 (90.11 kg/m) |
| DN600 | ---- | ---- | 630×9 (137.82 kg/m) | 630×7 (107.5 kg/m) |
Straight seam welded pipes feature simple production processes with high efficiency and low cost. Available in longitudinal submerged arc welding (LSAW) and electric resistance welding (ERW) variants, these pipes are ideal for smaller diameter applications requiring consistent quality and rapid production.
Square and rectangular tubes are manufactured from rolled steel strip through unpacking, flattening, curling, and welding processes. Standard delivery lengths range from 4000mm to 12000mm, with wall thickness tolerances maintained within 10% for optimal dimensional accuracy.
Spiral welded pipes offer superior strength characteristics and can be produced from narrow billets to create larger diameter pipes. These pipes are widely used in oil and gas transportation, pipe piles, and bridge construction applications.
Thick walled coiled pipes are manufactured through hot-rolling processes, available in diameters from 400mm to 3000mm with wall thicknesses ranging from 4mm to 300mm. Custom lengths are produced according to specific customer requirements.
- Strict adherence to production standards and quality control protocols
- Competitive pricing based on real-time market conditions
- Secure transaction processing and financial protection
- Comprehensive after-sales support and technical assistance
- Long-term partnership opportunities with consistent quality assurance
Shandong Zhengde Metal Manufacturing Co., Ltd. operates five production bases with over 100 production lines, supported by 4 nationally recognized laboratories and multiple technical centers. Products are exported to more than 50 countries worldwide.
Shandong Zhengde Metal Manufacturing Co., Ltd. is a comprehensive enterprise specializing in hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, section steel, steel pipes, and other metal products.
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