Cold-drawn seamless steel pipe is a common type of thick-walled seamless steel pipe. It is a special material of thick-walled steel pipe. For cold-drawn seamless steel pipe, it is more important to ensure the most basic use and play a more important role. Cold-drawn seamless steel pipe is an important material of seamless steel pipe, its hardness is relatively large, generally in the cutting time is more arduous, to master the cutting skills and methods, so that cold-drawn seamless steel pipe can be successfully cut, can not hurt people. In order to cut cold-drawn seamless steel pipe safely, it is suggested that the operation be carried out as follows: 1.机械切割采用外部安装和内部安装两种，其采用车刀加工原理对管口进行切断和坡口加工，单机跨度大，可加工厚度大，废料少，无污染，加工过程不产生高温，不影响管道材质，有利于焊接的进行。水切割通过高压泵和金刚砂共同作用加工管道，其切口干净，加工跨度大，但是其效率低，加工厚度受限因素严重。
1. Mechanical cutting adopts external installation and internal installation. It adopts turning tool processing principle to cut and groove the pipe mouth. It has large span, large Machinable thickness, less waste, no pollution, no high temperature in the processing process, no influence on pipe material, and is conducive to welding. Water cutting process pipeline by high-pressure pump and diamond sand, its cut is clean, processing span is large, but its efficiency is low, processing thickness is seriously limited factors.
2. Oxyacetylene flame cutting, by adjusting the oxygen valve and acetylene valve, can change the mixing ratio of oxygen and acetylene to get three different kinds of flame: neutral flame, oxidation flame and carbonization flame.
3. Ion cutting, plasma cutting with different working gases can cut all kinds of hard-to-cut metals, especially for non-ferrous metals (stainless steel, aluminium, copper, titanium, nickel); its main advantage is that when the thickness of metal is not large, plasma cutting speed is fast, especially in general cutting. In the case of carbon steel sheet, the cutting speed can be 5-6 times as fast as that of oxygen cutting method, the cutting surface is smooth, the thermal deformation is small and the heat affected zone is less.
These methods are also commonly used in cold-drawn seamless steel tube cutting. Cold-drawn seamless steel pipe must choose suitable cutting tools, otherwise it is easy to cause damage and waste of cold-drawn seamless steel pipe.
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