纠偏机设备：纠偏机的作用是控制发泡层相对于钢管外表面厚度均匀一致，从而保证产品的整体使用性能。工作时通过数字量探头感应发泡层厚度，发泡层一旦出现厚度偏差时及时作出纠正，可以实现上下、左右四方位纠偏，从而保证成品管发泡层厚度均匀一致。Rectifying machine: the function of the rectifying machine is to control the thickness of the foaming layer relative to the outer surface of the steel pipe to be uniform, so as to ensure the overall use performance of the product. When working, the thickness of the foaming layer is