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The heat treatment process of hot-dip galvanizing and electro-galvanized pipe is also completely different. The hot-dip galvanized pipe is generally made of chilled board as raw material, and is continuously annealed and hot-dip galvanized on the galvanizing line, and the steel strip is cooled after being heated for a short time. China Hot Dipped Galvanized Steel Pipe 1-1/2inch - China Hot DIP Galvanized Steel Pipe, ASTM A53 Pipe, Seamless Pipe manufacturer / supplier in China, offering Hot Dipped Galvanized Steel Pipe 1-1/2inch, Prepainted Galvanized Steel Pipes Galvanized Pipe Clamp Steel Pipe Round, Whole Sale Dn15 - Dn200 Sch 40 Pre Gavalnized Steel Tube Chinese Manufacture hot dip galvanized pipe ERW welded welded tube manufacturers, welded tube . offers 1,341 hot dipped galvanized rack pipe products. A wide variety of hot dipped galvanized rack pipe options are available to you, such as standard, material, and grade. Get Price
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practice welding of steel that is to be hot dip galvanized, shows some common visual defects in the welded area after galvanizing, and how to successfully weld steel that is already galvanized and repair the damaged areas to restore the corrosion protection. All structural steel welding should be carried out by qualified professionals to