Hot-Rolled Seamless Steel Pipe 5-630mm Diameter for Agricultural Irrigation and Industrial Fluid Transport
Zhengde hot-rolled seamless steel pipe features a hollow cross-section with no joints, making it ideal for fluid transport applications including oil, natural gas, water, and solid materials. Compared to solid steel, these pipes offer equivalent bending and torsional strength with reduced weight, providing an economical steel section solution.
| Φ | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 8 | 8.5 | 9 | 10 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 32 | 2.146 | 2.46 | 2.762 | 3.052 | 3.329 | 3.594 | 3.847 | 4.088 | ||||||
| 38 | 2.589 | 2.978 | 3.354 | 3.718 | 4.069 | 4.408 | 4.735 | 5.049 | ||||||
| 42 | 2.885 | 3.323 | 3.749 | 4.162 | 4.562 | 4.951 | 5.327 | 5.691 | ||||||
| 45 | 3.107 | 3.582 | 4.044 | 4.495 | 4.932 | 5.358 | 5.771 | 6.172 | ||||||
| 50 | 3.477 | 4.014 | 4.538 | 5.049 | 5.549 | 6.036 | 6.511 | 6.973 | 7.423 | 8.286 | 8.699 | |||
| 54 | 3.773 | 4.359 | 4.932 | 5.493 | 6.042 | 6.578 | 7.103 | 7.614 | 8.114 | 9.075 | 9.538 | |||
| 57 | 3.995 | 4.618 | 5.228 | 5.826 | 6.412 | 6.985 | 7.546 | 8.095 | 8.632 | 9.667 | 10.167 | |||
| 60 | 4.217 | 4.877 | 5.524 | 6.159 | 6.782 | 7.392 | 7.99 | 8.576 | 9.149 | 10.259 | 10.796 | |||
| 63.5 | 4.476 | 5.179 | 5.869 | 6.548 | 7.214 | 7.867 | 8.508 | 9.137 | 9.754 | 10.95 | 11.529 | |||
| 68 | 4.809 | 5.567 | 6.313 | 7.047 | 7.768 | 8.477 | 9.174 | 9.858 | 10.53 | 11.838 | 12.473 | |||
| 70 | 4.957 | 5.74 | 6.511 | 7.269 | 8.015 | 8.749 | 9.47 | 10.179 | 10.876 | 12.232 | 12.892 | 13.539 | 14.797 | 17.164 |
| 73 | 5.179 | 5.999 | 6.807 | 7.602 | 8.385 | 9.156 | 9.914 | 10.66 | 11.394 | 12.824 | 13.521 | 14.205 | 15.537 | 18.052 |
| 76 | 5.401 | 6.258 | 7.103 | 7.935 | 8.755 | 9.563 | 10.358 | 11.141 | 11.912 | 13.416 | 14.15 | 14.871 | 16.277 | 18.94 |
| 89 | 6.363 | 7.38 | 8.385 | 9.378 | 10.358 | 11.326 | 12.281 | 13.225 | 14.156 | 15.981 | 16.875 | 17.756 | 19.483 | 22.787 |
| 108 | 7.768 | 9.02 | 10.259 | 11.486 | 12.701 | 13.903 | 15.093 | 16.27 | 17.436 | 19.729 | 20.858 | 21.973 | 24.168 | 28.41 |
| 133 | 11.178 | 12.725 | 14.261 | 15.783 | 17.294 | 18.792 | 20.278 | 21.751 | 24.662 | 26.098 | 27.522 | 30.334 | 35.809 | |
| 159 | 13.422 | 15.29 | 17.146 | 18.989 | 20.821 | 22.639 | 24.446 | 26.24 | 29.791 | 31.548 | 33.293 | 36.746 | 43.503 | |
| 219 | 18.601 | 21.209 | 23.805 | 26.388 | 28.959 | 31.517 | 34.064 | 36.598 | 41.629 | 44.126 | 46.61 | 51.543 | 61.259 | |
| 273 | 23.262 | 26.536 | 29.797 | 33.046 | 36.283 | 39.508 | 42.72 | 45.92 | 52.283 | 55.445 | 58.596 | 64.86 | 77.24 | |
| 325 | 27.75 | 31.665 | 35.568 | 39.458 | 43.337 | 47.202 | 51.056 | 54.897 | 62.542 | 66.346 | 70.137 | 77.684 | 92.629 | |
| 355 | 38.897 | 43.158 | 47.406 | 51.641 | 55.865 | 60.076 | 68.46 | 72.634 | 76.796 | 85.082 | 101.507 | |||
| 377 | 41.339 | 45.871 | 50.39 | 54.897 | 59.391 | 63.873 | 72.801 | 77.246 | 81.679 | 90.508 | 108.018 | |||
| 426 | 46.777 | 51.913 | 57.036 | 62.147 | 67.246 | 72.332 | 82.468 | 87.518 | 92.555 | 102.592 | 122.519 | |||
| 450 | 71.093 | 76.475 | 87.203 | 92.549 | 97.882 | 108.511 | 129.621 | |||||||
| 480 | 75.902 | 81.654 | 93.122 | 98.837 | 104.54 | 115.909 | 138.499 | |||||||
| 530 | 83.917 | 90.286 | 102.987 | 109.319 | 115.638 | 128.24 | 153.296 | |||||||
| 630 | 99.947 | 107.549 | 122.716 | 130.281 | 137.833 | 152.902 | 182.89 |
Our three-roll mill produces hot-rolled seamless steel pipes with exceptional precision. The cross-rolling process with mandrel ensures multiple rolling actions in a single pass, significantly improving wall thickness accuracy while preventing defects such as scratches, ears, and green lines. This technology offers production flexibility with adjustable pass sizes.
We maintain substantial inventory of carbon seamless tubes, special-shaped tubes, alloy seamless tubes, and precision tubes. Available specifications range from 5-426mm diameter with 0.5-60mm wall thickness and lengths of 2-16 meters.
Every hot-rolled seamless steel pipe undergoes rigorous quality control. We ensure surfaces are free from defects like cracks or scars, and maintain consistent wall thickness throughout each pipe. Our cold-rolled precision bright tubes feature smooth surfaces, uniform wall thickness, no oxide layer, and high dimensional accuracy.
Our hot-rolled seamless pipes serve diverse industries including low/medium pressure boilers, high-pressure boilers, shipbuilding, petroleum cracking, fertilizer equipment, oil casing, pipeline systems, hollow sucker rods, and structural applications. Products are widely used in petroleum, chemical, power generation, boiler manufacturing, shipbuilding, machinery, and exported globally.
- Quality First: Strict adherence to production standards and inspection protocols
- Competitive Pricing: Market-based discounts and transparent pricing
- Transaction Security: Guaranteed protection of customer funds
- After-Sales Support: Comprehensive customer service and problem resolution
- 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, steel wires, metal mesh, stainless steel, aluminum, copper, and other metal products. With five production bases across Binzhou, Liaocheng, Wuxi, Tianjin, Jinan, and Tai'an, we operate over 100 production lines with 4 nationally recognized laboratories, 2 technical engineering centers, and 5 enterprise technology centers. Our products are exported to more than 50 countries worldwide.
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