Disadvantages,Galvanized,Coati technology Disadvantages of Galvanized Coating Steel Pipe
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Disadvantages of galvanized coating steel pipe has following aspects:On the surface of hot dip galvanized steel rice distribution classes of small dots, called zinc particles is customary. Defective zinc particles can be divided into two: one is up and down the strip surface adhesion lot of granular, strip local increase in the thickness of the zinc layer, causing the surface rough, unsightly and harmful use of known zinc particles. There are two forms, one of the larger particles of zinc tablets, the main ingredient is iron - zinc compound, which is the end of slag.When galvanized coating steel pipe edge is much higher than the middle of coating thickness, edge thickness is produced.When the air knife nozzle clogging occurs locally when in a position corresponding to the strip will produce thick zinc layer is formed with marks.In the middle of the strip edge or rendered bright stripes or the presence of dendritic conchoidal crystal crystalline zinc this particular often make local zinc layer projections, it is called zinc projections.Strip out from uncoiler to galvanized defects between coiler, strip and a mechanical relative movement generated.More information,pls visit:Hunan great steel pipe co.,ltd
Disadvantages,Galvanized,Coati