how much zinc coating does the hot dipped galvanized steel pipe have normally?

Hot Dipped Galvanized Pipe
Hot dipped galvanized pipe made by black pipes dipped into zinc pool for galvanized. Zinc coating :275 600g /m2

Steel Grade:Q195-Q345, S235JR, S275JR, S355JR, S355J2H, STK400/500.

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