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Although erw steel pipe and ssaw steel pipe all belong to a type of welded pipe, there are certain differences. So how to distinguish erw steel pipe and ssaw steel pipe?
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16mn square tube is a kind of steel processed under normal temperature environment through a series of cold drawing, cold bending and other technologies. Compared with the 16mn square tube, the hot-rolled tube is a kind of steel processed above the recrystallization temperature.
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The heat treatment of the rectangular tubes can ensure the strength and wear resistance of the steel tube surface.
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Longitudinal welded pipe manufacturers follow strict production processes in production, but it is difficult to say that 100% of the products produced are qualified and excellent, so it is necessary to conduct quality inspection of longitudinally welded pipe manufacturers. What are the quality inspection processes of straight seam welded pipes?
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Stainless steel pipe(stainless steel welded pipe) is a kind of hollow long cylindrical steel, which is mainly used as a pipeline for conveying fluids. Widely used in petroleum, chemical, medical, food, light industry, mechanical instrumentation and other industrial pipelines and mechanical structural components.
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Factors that affect the corrosion resistance of large-diameter rectangular tubes include chloride ion corrosion, lack of solution treatment and natural intergranular corrosion.
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Two main factors should be considered when designing a square tube section: one is the safety of the section; the other is the economy of the section.
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Seamless steel pipe for fire fighting is resistant to weak corrosive media such as air, steam, water and chemical corrosive media such as acid, alkali and salt, also called stainless acid resistant steel pipe. What about the oxide skin of seamless steel pipe for fire fighting in long-term use?
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