How to treat surface of welding pipe with steel shots and steel grits

- Jan 03, 2018 -

Anticorrosion spiral steel pipe production technology is simple, high production efficiency, low cost, rapid development.The strength of the spiral welded pipe is generally higher than straight seam welded pipe, use a narrow billet production of larger diameter welded pipe, you can also use the same width of billet in the production of different pipe diameter welded pipe.The strength of the spiral welded pipe is generally higher than straight seam welded pipe, use a narrow billet production of larger diameter welded pipe, you can also use the same width of billet in the production of different pipe diameter welded pipe.But compared with the same length of straight seam pipe, weld length by 30 ~ 100%, and the production speed is low.As a result, a small diameter welded pipe are mostly with straight seam welding, large diameter welded pipe for the most part adopts spiral welded.


In order to achieve ideal cleaning effect, should according to the degree of hardness, the original corrosion on the surface of the spiral steel pipe, the requirements of the surface roughness, coating types to choose abrasive, for single layer, layer or three layer PE coating epoxy, using a mixture of steel shot and steel grit grinding are more likely to achieve ideal cleaning effect.Steel shots have the effect of the reinforcement steel surface, and it has steel grit etching on the surface of the steel.Steel shot and steel grit mixed abrasive (usually for 40 ~ 50 HRC hardness steel shot, steel grit of hardness of 50 ~ 60 HRC can be used for all kinds of steel surface, even in the class C and D corrosion of steel surface, cleaning effect is very good also.

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