In general, high-frequency welded pipe during welding, the welding quality and welding speed are related. As the heating time can be shortened, the time the metal oxide shortened, therefore, the quality of the welding speed and the welding speed with increased.
If the welding speed is reduced, so that the heating zone will not only wider, but also with the molten zone width and change the heat input and thus the formation of burrs is large, so the high-frequency welded pipe, the welding equipment and the unit should be means the maximum allowable speed according to different specifications and varieties select the appropriate welding speed.
In order to achieve high-frequency welded pipe rust the desired effect, according to the choice of materials abrasive surface hardness and high frequency welded pipe extent of corrosion, surface roughness, for reasonable operation. Meanwhile, in order to achieve the desired effect of rust, for single-layer epoxy, two or three layers polyethylene coating should be mixed abrasive grit and steel shot to operate.
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