isee

Website:http://www.channelmetal.com
Corrosion resistant rare earth aluminum alloy internal thread pipe is made of 3-series aluminum manganese alloy, and the outer surface is compounded with 7-series zinc-aluminum alloy layer that accounts for 5%-15%of the total wall thickness, and the inner and outer layers are metallurgically bonded. 7-series aluminum alloy has the protective effect of sacrificial anode for 3-series aluminum alloy substrate, which is equivalent to uniform and dense zinc spraying treatment on the outer surface of 3-series aluminum alloy (similar to plating the principle of zinc steel pipe). The protective layer exhibits a uniform layered planar corrosion in a corrosive environment.Only when the protective layer is completely consumed will the matrix structure be eroded, so the pitting corrosion and perforation corrosion of the 3-series aluminum alloy substrate can be avoided. Because of the double-layer structure and double-layer protection, the bursting pressure-resistance of the composite pipe formed by internal thread is higher than that of the single-layer pipe.The tensile strength and elongation are equivalent to 3-series aluminum alloy substrate of the same specification, which is convenient for subsequent processing.Its unique anti-corrosion protective layer can greatly improve the service life of the inner threaded pipe, thereby improving the service life of air conditioners, refrigerators, freezers, and water heaters.