Mining plastic-coated composite steel pipes have the following characteristics: (1) Flame retardant and antistatic The product uses polyethylene coating for mining. Its antistatic and flame-retardant...
(1) When the cooling is completed, that is, when the temperatures of the surface layer and the core are all consistent, the elastic deformation of the surface layer and the core will also disappear and...
The wall thickness can be called a thick-walled steel pipe. There are some doubts about this. It depends on the ratio of the outer diameter of the steel pipe to the wall thickness of the steel pipe. For...
Due to the corrosion of steel pipelines and equipment, the quality of products has been reduced due to the shutdown of production enterprises. It affects the supply of gas, heating steam, or hot water,...
(1) The node connection is suitable for direct welding, without the node plate or other connecting parts, which saves labor and materials. (2) When necessary, concrete can be poured into the pipe to form...
When laying thin-walled stainless steel pipes, they should be installed after the civil works are finished. Before installation, first check whether the position of the reserved hole is correct. When...
1. Thick-walled steel pipes should be submitted for inspection in batches, and the batching rules should comply with the regulations of the corresponding product standards. 2. The inspection items, sampling...
In order to solve the problem of excessive misalignment in the alignment of spiral steel pipe nozzles, the following preventive measures should be taken in quality management control: 1. Try to...
Welded steel pipes are made by flattening steel coils and then welding them through a welding machine. There are several types of welding, such as straight seam welding and spiral welding. The diameter...