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- Greenhouse Kits / Frame Galvanized Steel Pipe Tube
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What is the difference between hot dip and pre galvanized steel pipe?
In produce: hot dip galvanized steel pipe is made from black steel pipe and then do zinc coating.
pre galvanized steel pipe made from pre galvanized steel strip.
In zinc weight: hot dip galvanized 200-300g/m2
pre galvanized 30-150g/m2