The black-fluted steel pipe usually has a deep black surface, has strong corrosion resistance, and is widely used in machinery manufacturing, automobile manufacturing, home appliance production, and structural components.
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Welded square tubes, also known as welded tubes, are square tubes made from steel plates or strips that are welded after being rolled and shaped.
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Galvanising is an anti-corrosion treatment in which steel materials are immersed in a molten zinc solution to form a uniform layer of zinc that protects the steel from the effects of oxidation and corrosion.
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Aluminium-zinc coils are steel coils with an aluminium-zinc alloy coating on the surface, which provides high corrosion and heat resistance. The aluminium-zinc layer consists of 55% aluminium, 43.4% zinc and 1.6% silicon.
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Galvanized square tube is a kind of hot-rolled or cold-rolled galvanized steel strip or galvanized coil for the billet by cold bending processing and forming, and then by high-frequency welding made of square cross-section shape dimensions of the hollow square cross-section steel tube, or will be done beforehand cold-formed hollow steel tube and then hot-dip galvanized processed into galvanized square tube.
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