square steel tube 30x30x3square steel pipe of steel square tube material specifications

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* Production Description

* Application

Hot dip galvanized pipe is widely used in communications equipment, construction, machinery, coal, chemical industry, railway vehicles, automotive industry, roads, Bridges, containers, sports facilities, agricultural machinery, petroleum machinery, prospecting machinery manufacturing industry.

Hot dip galvanized tube surface is plated layer or electric galvanized welded steel pipe. Galvanized steel pipe corrosion resistance can increase, prolong service life. Galvanized pipe USES is very wide, in addition to a general low pressure fluid such as water, gas, oil line pipe, also used as oil industry, especially the ocean oil field oil well pipe, oil pipe, chemical coking equipment of oil heater, the condensing, exchange of coal distillation wash oil cooler for tube, and trestle pile, mining tunnel supporting frame tube, etc.

*Production Process 

Hot dip galvanized pipe is the molten metal and iron substrate reaction and produce alloy layer, so that the substrate and coating combination of both. Is hot dip galvanized steel pipes to pickling, in order to remove iron oxide on the surface of the steel tube after acid cleaning, by ammonium chloride or zinc chloride or ammonium chloride and zinc chloride mixed aqueous solution tank cleaning, and then sent to the hot dip plating tank. Hot dip galvanized with uniform coating, strong adhesion, long service life, etc. Galvanized pipe and hot galvanized pipe matrix molten solution of complex physical, chemical reaction, the formation of corrosion resistance of the structure compact zinc alloy layer. Pure zinc alloy layer and layer and steel substrate. So the corrosion resistant ability.

* Steel pipe structure picture and weight counting method as follow: