Straight seam welded pipe: a steel pipe with the weld seam parallel to the longitudinal direction of the steel pipe. According to the forming process, it is divided into high frequency straight seam steel pipe (erw pipe) and submerged arc welded straight seam steel pipe (lsaw pipe).
1. Construction preparation before use of straight seam welded pipe
The pipeline trench for the welded pipe should be dug well, the brick laying of the pipeline well is completed, the various types of welded pipes required are in place, and the various things required, including electric welding machines, cutting machines, electric hammers, grinders, etc., are fully prepared, just do A series of preparations are required to start the installation.
2. Installation of straight seam welded pipe
There are strict technical requirements for the installation and use of welded pipes, which must be carried out in accordance with the practical environment and operating procedures to ensure safety and quality. In the process of extensive use, the welded pipe needs to pay attention to the following points:
Installation of Welded Pipes The welded pipes are positioned according to the drawing plan, and the pipe supports are prefabricated according to the on-site environment, and then the material is cut according to the plan and on-site, and then the groove is ground with a polisher before welding.
3. Quality requirements for use
The branch pipe shall not be welded at the weld of the welded pipe, and there shall be no weld at the bend.
The error of the riser of the straight device should be less than 3 mm per meter, and the error of the water installation should be less than 1 mm.
The welded pipe requires that the welding seam is straight, the welding seam is full, and the welding seam is roughly free of burn-through and cracks;
4. At the same time, the service life of the material should also be considered when selecting the welded pipe insulation material, so as to avoid the trouble of frequent disassembly and assembly due to short use time. Choosing the right insulation material for steam pipes can reduce heat loss, save materials, and facilitate installation and disassembly.