Galvanized steel pipe(galvanized pipe) Galvanized steel pipes are made of steel that has been covered with a layer of z ...
Galvanized steel pipes are made of steel that has been covered with a layer of zinc metal. During the galvanizing p ...
Galvanized square steel pipe Introduction: Galvanized square pipe is a square pipe made of steel plate or steel strip w ...
Galvanized spiral pipe is a state of molten metal zinc and iron substrate reaction and produce alloy layer, so that the ...
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