A36 SS400 S235JR S355JR 1020 Schedule 80 ERW Carbon Steel Pipe 21.3-630mm Diameter Range
Zhengde welded steel pipes are manufactured through advanced welding processes using steel plates or strips rolled and formed into shape. Available in various specifications including A36, SS400, S235JR, S355JR, and 1020 carbon steel grades with Schedule 80 wall thickness.
| DN | Welded Steel Pipe (Ordinary) | Welded Steel Pipe (Thickened) | Seamless Steel Pipe (Hot Rolled) | Spiral Welded Steel 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 low cost. Available in longitudinal submerged arc welding (LSAW) and electric resistance welding (ERW) variants.
Manufactured from rolled steel strips, square tubes offer dimensional precision with wall thickness tolerances within 10% for walls ≤10mm and 8% for walls >10mm. Standard delivery lengths range from 4000mm to 12000mm.
Spiral welded pipes provide superior strength and are ideal for large-diameter applications in oil and gas transportation, pipe piles, and bridge construction.
Available in diameters from 400mm to 3000mm with wall thicknesses from 4mm to 300mm.
- Production and inspection strictly following international standards
- Competitive pricing with real-time market-based discounts
- Secure transaction processing and financial protection
- Comprehensive after-sales service and technical support
- Long-term partnership commitment with consistent quality
Shandong Zhengde Metal Manufacturing Co., Ltd. operates multiple production bases with over 100 production lines, 4 nationally recognized laboratories, and multiple technical centers. Products are exported to over 50 countries worldwide.
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