Views:3 Author:Site Editor Publish Time: 2021-12-20 Origin:Site
Surface processing of spiral steel pipe
The surface treatment of spiral steel pipes mainly uses wire brushes and other things to polish the surface of the steel, which can remove loose or warped oxide scale, rust, welding slag, etc. Hand-operated tools can reach Sa2 level for rust removal, and power tools can reach Sa3 level for rust removal. If the steel surface adheres to a strong oxide scale, the results of the rust removal are not satisfactory and the anchor pattern depth required for anti-corrosion construction cannot be reached.
HAIRLINE: HL NO.4 is a product (subdivision 150-320) produced by continuous grinding with a polishing belt of appropriate granularity. Mainly used for building decoration, elevators, building doors, panels, etc.
Bright surface: BA is a product obtained by bright annealing after cold rolling and smoothing. The surface gloss is excellent and has a high reflectivity. Like a mirror surface. Used in home appliances, mirrors, kitchen equipment, decoration materials, etc.
After spraying (projecting) the spiral steel pipe to remove rust, not only can the physical adsorption effect of the pipe surface be expanded, but also the mechanical adhesion effect of the anti-corrosion layer and the pipe surface can be strengthened. Therefore, spraying (projecting) rust removal is a fantasy rust removal method for pipeline anticorrosion. Generally speaking, shot blasting (sand) rust removal is mainly used for the internal and external surface treatment of the pipe and shot blasting (sand) rust removal is mainly used for the surface treatment of the pipe.