In this article, Baowu will take you to distinguish between seamless steel pipes and welded steel pipes.

The difference between seamless steel pipe and welded steel pipe is mainly divided into the following parts:

1. The appearance is different. The seamless tube is rolled and formed at one time, with a seamless surface and good performance. The inner wall of the welded pipe has welding ribs, which need to be rolled and welded. The welded pipe is rolled up and welded.

2. The process is different. Welded pipes are made by cold rolling and high frequency welding, and are mainly used in construction, while seamless pipes are divided into hot rolling and cold rolling, which are mainly used in factories.

3. The pressure is different, the pressure of the seamless pipe is high, while the pressure of the welded pipe is 10 MPa.

Well, after realizing the difference between seamless steel pipes and welded steel pipes, let's talk about what should be paid attention to when welding pipes?

1. When welding the pipeline first, it must be operated according to the instruction book, and the operator must hold a certificate to work, and the welding shall not be carried out over time.

2. Before pipeline welding, the welding surface should be cleaned without stains, and the welding materials should be baked in advance according to the operating instructions.

3. The weld bead should be connected and welded at one time. If it is forced to be interrupted in the middle, crack prevention measures should be adopted.

4. During the welding arc, when the wind speed is greater than 8 meters per second or the humidity is greater than 90%, welding cannot be performed, which will affect the welding quality.

The above is the difference between pipes and some issues that need to be paid attention to when welding pipes.

Hope you all have some basic understanding. If you want to know more, you can always follow Baowu.