After-sales Service: | 24h |
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Warranty: | 5 |
Type: | Welded |
Technique: | ERW |
Material: | Carbon Steel |
Surface Treatment: | Black |
Samples: |
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Customization: |
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Zhengde Welded steel pipe, also known as welded pipe, is a steel pipe made by welding steel plates or strips after being rolled and formed. Welded steel pipes are divided into straight seam welded pipes and spiral welded pipes according to the form of welds. Classified by production method: arc welded pipe, resistance welded pipe, (high-frequency, low-frequency) gas welded pipe, furnace welded pipe. The production process of straight seam welded pipe is simple, with high production efficiency, low cost, and rapid development. The strength of spiral welded pipes is generally higher than that of straight seam welded pipes. Narrow billets can be used to produce larger diameter welded pipes, and billets of the same width can also be used to produce welded pipes of different diameters. However, compared to straight seam pipes of the same length, the weld length increases by 30-100% and the production speed is lower. Thick wall coil products include: large coil, large diameter thick wall coil, various materials thick wall coil, hot rolled thick wall coil, cold rolled thick wall coil
Longitudinal welded pipe: usually a small and medium-sized welded pipe with a nominal diameter of DN15 (4-inch pipe) and DN150 (6-inch pipe). The straight seam welding process is simpler than the spiral welding process, with low welding cost and high efficiency. The disadvantage is that the welds are on the same straight line and the compressive strength is low. Therefore, straight seam welding is only suitable for the production of small and medium-diameter welded pipes.
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 | |||||
D×∮ | (Kg/m) | D×∮ | (Kg/m) | D×∮ | (Kg/m) | D×∮ | (Kg/m) | |
DN15 | 21.3*2.75 | 1.25 | 21.3*3.25 | 1.44 | ---- | ---- | ---- | ---- |
DN20 | 26.8*2.75 | 1.63 | 26.8*3.5 | 2.01 | ---- | ---- | ---- | ---- |
DN25 | 33.5*3.25 | 2.42 | 33.5*4 | 2.91 | 32*3.5 | 2.46 | ---- | ---- |
DN32 | 42.3*3.25 | 3.13 | 42.3*4 | 3.77 | 38*3.5 | 2.98 | ---- | ---- |
DN40 | 48*3.5 | 3.84 | 48*4.25 | 4.58 | 45*3.5 | 3.58 | ---- | ---- |
DN50 | 60*3.5 | 4.88 | 60*4.5 | 6.16 | 57*3.5 | 4.62 | ---- | ---- |
DN65 | 75.5*3.75 | 6.64 | 75.5*4.5 | 7.88 | 73*4 | 6.81 | ---- | ---- |
DN80 | 88.5*4 | 8.34 | 88.5*4.75 | 9.81 | 89*4 | 8.38 | ---- | ---- |
DN100 | 114*4 | 10.85 | 114*5 | 13.44 | 108*4 | 10.26 | ---- | ---- |
DN125 | 140*4.5 | 15.04 | 140*4.5 | 18.24 | 133*4 | 12.72 | ---- | ---- |
DN150 | 165*4.5 | 17.81 | 165*5.5 | 21.63 | 159*4.5 | 17.14 | 168*5 | 20.1 |
DN200 | ---- | ---- | ---- | ---- | 219*6 | 31.52 | 219*5 | 31.52 |
DN250 | ---- | ---- | ---- | ---- | 273*8 | 52.28 | 273*7 | 45.92 |
DN300 | ---- | ---- | ---- | ---- | 325*8 | 62.54 | 325*7 | 54.9 |
DN350 | ---- | ---- | ---- | ---- | 377*9 | 81.67 | 377*7 | 63.87 |
DN400 | ---- | ---- | ---- | ---- | 426*9 | 92.55 | 426*7 | 72.33 |
DN450 | ---- | ---- | ---- | ---- | 480*9 | 104.53 | 478*7 | 81.31 |
DN500 | ---- | ---- | ---- | ---- | 530*9 | 115.62 | 529*7 | 90.11 |
DN600 | ---- | ---- | ---- | ---- | 630*9 | 137.82 | 630*7 | 107.5 |
Shandong Zhengde Metal Manufacturing Co., Ltd. is a production and sales company integrating 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 integrated large enterprises. Five production and sales bases have been formed in Binzhou, Liaocheng, Wuxi, Tianjin, Jinan and Tai'an, with more than 100 production lines, 4 nationally recognized laboratories, 2 technical engineering centers, and 5 enterprise technology centers. Products are exported to more than 50 countries and regions such as North America, South America, Europe, Africa, Oceania, Middle East, and Southeast Asia.
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