Hot dipped galvanized pipe maked by black pipes dipped into zinc pool for galvanized. Zinc coating :2750-600g /m2 Steel Grade:Q195-Q345, S235JR ... . C , GR. D, SCH40/80/STD . Surface: hot dipped galvanized ,Pre – galvanized , electro galvanized ,painted, threaded ,beveled ,grooved , engraved .Packing: Two tags on ... -12m16"406.4mm8.0mm-20.0mm1.0m-12m Hot dipped galvanized pipe