Hot dip galvanized pipe is the natural black steel tube after manufacturing immersed in the plating solution. The thickness of the zinc coating is affected by a number of factors, including the surface of the steel, the time it takes to immerse the steel in the bath, the composition of the steel, and the size and thickness of the steel. The minimum thickness of the pipe is 1.5mm.
One advantage of hot dip galvanization is that it covers the entire part, including edges, welds, etc., thus providing a full range of corrosion protection. The final product can be used outdoors in all different weather conditions. This is the most popular method of galvanizing and is widely used in the construction industry.
Pre-galvanized pipe is the tube that is galvanized in sheet form and therefore before further manufacture. Galvanized plate is cut into a certain size and rolled. The minimum thickness of the pipe is 0.8mm. Usually max. thickness is 2.2mm.
One of the advantages of pre-galvanized steel over hot-dipped galvanized steel is its smoother and better appearance. Pre-galvanized pipe can be used in greenhouse steel pipe, conduit pipe, furniture steel pipe and other structure steel pipe.