seamless pipe means a steel pipe with a hollow section, which can be used for the transportation of fluids, such as gas, natural gas, water, etc.; its bending and torsional strength is also very good.The production process of seamless pipe is mainly divided into two types: cold drawing and hot rolling.
There are many kinds of materials for cold drawn seamless tubing, the common ones are the following five:
1) Ordinary carbon structure
2) High quality carbon structure
3) Alloy steel
4) Stainless acid-resistant steel
5) Low alloy steel
Due to the different materials of cold-drawn seamless steel pipes, the aspects of use are also different. So, what should be paid attention to when using cold drawn seamless pipes?
First of all, in the process of welding cold-drawn seamless steel pipes, welding branch pipes should not be used, and there should be no welding seams in the bending position, which not only affects the aesthetic effect, but also is not conducive to long-term use, and is very prone to leakage.
Secondly, special attention should be paid to the weld of cold-drawn seamless steel pipe. It must be straight and the weld should be full.The surface of the welding joint must not have defects such as burn-through, cracking, nodules, pores, etc., otherwise it will affect the later use and bring unnecessary trouble.
Finally, the welding wave of cold drawn seamless steel pipe should be consistent,The error caused by the misalignment of the pipe's counterpart should be controlled at about 20% of the wall thickness and within the range of 2mm. If it exceeds this value, it will affect the later use.
Article source: https://article-realm.com/article/Finance/28184-Material-types-of-cold-drawn-seamless-pipes.html
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