内整平设备的全称叫做在线管材内外焊缝整平设备，更为简洁的称呼是：内整平，也有人称之为HZP。
内整平设备是一个内置芯棒并利用轧辊对管材进行滚压的往复式自动滚压装置，通过控制滚压强度和道次以达到内外焊缝整平、彻底去除内外焊缝余高且与母材平滑过渡，就是实现焊管的无缝化。
该设备被广泛应用于卫生级流体管、卫浴管、石油化工管道等行业的精密管件制造。
Internal leveling e device called the inside and outside the pipe welding leveling e, more concise call is:Internal leveling, it was also called HZP.The internal leveling device is a reciprocating automatic rolling device with a built-in mandrel and rolling the pipe by means of a roll. By controlling the rolling strength and pass to achieve the inner and outer weld leveling, the inner and outer welds are completely removed and Base metal smooth transition, is to achieve seamless pipe. The e is widely used in sanitary-grade fluid pipes, sanitary tubes, petrochemical pipes and other industries of precision pipe manufacturing.
内整平设备主要有两部分组成，一部分是液压油站，另一部分是机架。
液压站的作用是提供机器运作的动力，而机架的作用是起到支撑和试机挤压作业的功能。
Internal leveling e is mainly composed of two parts, part of the hydraulic station, the other part is the rack. The role of the hydraulic station is to provide the power of the machine operation, and the role of the rack is to play and test machine extrusion operation function.
内整平设备工作原理/Internal leveling device works：
带有内外焊缝余高的焊管经过水平辊滚压后，余高被去除，焊缝界面变成一个水平椭圆，芯棒在焊管内被卡住并跟着焊管走；在经过立辊滚压，焊管界面变成一个正圆，芯棒跟焊管分离，在机架返回时被气缸拉回适当位置，再进行第二个滚压循环。
With the inside and outside the weld more than the weld pipe through the horizontal roller rolling, the remaining height is removed, the weld interface into a horizontal oval, the mandrel was caught in the pipe and followed by the pipe to go; The pipe interface becomes a perfect circle, the mandrel is separated from the pipe, and is returned to the proper position by the cylinder when the frame is returned, and then the second rolling cycle is carried out.
内整平抗扭座/Internal leveling - torsion base
这个是针对高端客户要求定制的，焊缝抗扭装置能够纠正焊管制造过程中出现的焊缝偏移的情况，提高焊管的成材率。
This is customized for high-end customer re, the weld torsion device to correct the weld pipe manufacturing process in the weld offset situation, improve the pipe into the material rate.