What to pay attention to when using spiral steel pipe

　　1.Construction preparation of heat preservation spiral steel pipe before use

　　The pipe trench shall be dug well, and the bricklaying of the pipe well shall be completed. Various types of heat preservation spiral steel pipes are required. All necessary tools, including electric welding machine, cutting machine, electric hammer, polishing machine, etc., can be completed. A series of preparations can be made to start the installation.

　　2. Installation of heat preservation spiral steel pipe

　　According to the drawing design, position the pipeline, prefabricate the pipe rack according to the site conditions, cut the materials according to the design and site, polish the groove with a sander, and then weld.

　　3. DN1000 ERW Spiral Steel Pipe use quality requirements

　　1. The vertical installation of riser shall be less than 3mm per meter, and the horizontal installation shall be less than 1mm.

　　2. The branch pipe shall not be welded at the weld, and the weld shall be avoided at the bend.

　　3. The weld is required to be straight, the weld is full, and there is no burn through or crack on the weld surface.