Small Diameter Round Hot Rolled Thick Walled Coiled Tube A53 A333 A106 A335 St45 Welded Pipe 21.3-630mm Diameter
Zhengde welded steel pipes are manufactured through advanced rolling and welding processes, available in straight seam and spiral weld configurations. These pipes are engineered for demanding applications including liquid transport, boiler systems, drilling operations, and hydraulic systems.
| DN Size | Welded Pipe (Ordinary) | Welded Pipe (Thickened) | Seamless Pipe (Hot Rolled) | Spiral Welded Pipe |
|---|---|---|---|---|
| pg≤1.0Mpa | pg≤1.6Mpa | pg≤2.5Mpa | pg≤1.6Mpa | |
| 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 cost-effectiveness. Available in longitudinal submerged arc welding (LSAW) and electric resistance welding (ERW) variants, these pipes are ideal for smaller diameter applications.
Manufactured from rolled steel strip through advanced processing, square and rectangular tubes offer structural versatility with typical delivery lengths of 4000mm-12000mm.
Spiral welded pipes provide superior strength and are manufactured using narrow billets to produce larger diameter pipes. Ideal for oil and gas transportation, pipe piles, and bridge construction.
Available in diameters from 400mm to 3000mm with wall thicknesses of 4mm to 300mm, manufactured to customer specifications.
- Quality First: Strict adherence to production standards and comprehensive inspection protocols
- Competitive Pricing: Market-based pricing with volume discounts
- Secure Transactions: Complete financial protection for customer investments
- Comprehensive After-sales: Dedicated support for all customer requirements
- Long-term Partnership: Consistent quality, competitive pricing, and reliable service
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. With five production bases and over 100 production lines, our products are exported to more than 50 countries worldwide.
A: We provide free samples with express shipping service worldwide.
A: Please provide grade, dimensions, surface treatment requirements, and quantities needed.
A: We have experienced agents to arrange complete shipment services.
A: Payment ≤1000USD: 100% in advance. Payment ≥1000USD: 30% T/T in advance, balance before shipment.
A: Yes, we manufacture according to customer specifications and drawings.
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