What do I need to pay attention to the use of spiral steel pipe?

Spiral steel pipe installation and use, there are strict technical requirements, according to the actual situation, but also in accordance with the operating procedures to ensure and quality. In the general use process, spiral steel pipe need to pay attention to the following points:

1, the installation of spiral steel pipe according to the design of the drawings, according to the site prefabricated pipe bracket, and then according to the design and the site for punching, and then use the polishing machine to polish the groove, and then welding. The use of quality requirements for vertical installation of riser pipe deviation should be less than 3 mm per meter, horizontal installation deviation should be less than 1 mm. Branch pipe should not be welded at the weld, and welding should be avoided at the bend.

2, spiral steel pipe before the use of construction preparation pipeline trench to be dug, pipe wells to be laid, the need for a variety of spiral steel pipe, the need for a variety of tools, including welding machine, cutting machine, electric hammer, polishing machine, etc., should be fully prepared, only a series of preparations to start the installation.

3, about the surface mechanical damage, usually choose to add the set of ways to repair, set by two pieces of composition, two longitudinal weld by two pieces of slats, choose the way of welding No welding. The advantage is that there is no weld on the body of the steel pipe. The longitudinal seam is a butt weld with a liner, and the pipe body itself becomes the liner for the upper and lower sets. No matter which way is chosen, the sets must be tightly hooped on the steel pipe.

4, the weld is straight, the weld is complete, and the weld surface is free of burn-through and cracks. When the scratches do not form a leak, the set and the steel pipe body between the two annular fillet weld without welding, such as leakage, it is necessary to weld on, this time the set is in the receipt of liquid formation of internal pressure, therefore, in this situation, the set of simple thickness is usually not less than the thickness of the wall of the pipe.