Hot-rolled seamless pipes are generally produced on automatic pipe rolling units. After checking and removing surface defects, the solid tube blank is cut into the required length, centered on the perforated end face of the tube blank, then sent to the heating furnace for heating, and pierced on the piercing machine. While piercing, it rotates and advances continuously. Under the action of the roller and the plug, the inside of the tube blank gradually forms a cavity, which is called the capillary tube.
thick 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 |
Quality first: production and inspection in strict accordance with production standards;
Price advantage: discounts based on real market prices;
Transaction security: There will be no loss of customer funds;
After-sales guarantee: the customer's problem is our problem;
Long-term cooperation: quality assurance, price advantage, sincere service can last for a long time.
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.