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                        Aluminum alloy pipe insulation should choose neutral insulation materials

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                        Aluminum alloy pipe insulation should choose neutral insulation materials

                        Date of release:2019-09-11 Author: Click:

                        Aluminium alloy conduit, in the life, almost all people have such experience, open faucet for the first time every morning, the meeting in conduit flows out the color is terrible "yellow water", it is rust to come out as current actually. Iron is an essential element, but as one of the indicators of drinking water, the amount of iron in every liter of water should not exceed 0.3 mg. If naked eye can distinguish the color of rust in water, or it is to be able to taste the taste that gives rust, so the iron content in water is exceeded bid greatly, iron content exceeds bid, not only look and feel, taste bad, long-term drinkable, still can aggravate kidney burden, bring about the disease such as endocrine system maladjustment, hypertension.


                        In addition, "yellow water" is also mixed in the galvanized pipe not smooth wall of the bacteria breeding, the harm to the human body is very big. Aluminum alloy quick plug installation piping system in Europe and the United States has been widely used in the transportation of compressed air, vacuum, nitrogen and inert gas. This product with its corrosion resistance, quick installation, low pressure drop, 100% reuse of excellent characteristics has been recognized by many well-known domestic enterprises, aluminum alloy quick pipeline system will gradually replace the traditional carbon steel and stainless steel type of traditional pipeline, for the use of units cheaper delivery of clean gas fluid.


                        Compressed air contains a lot of water, impurities, oil, and the formation of weak acid gas, the seamless steel tube caused corrosion, especially the welding part or damage, artificial welding easy to cause virtual welding spot, easy to leak, and leakage point is not easy to find. The higher operating temperature of commonly used aluminum and aluminum alloy tubes shall not exceed 200℃; For pressure piping, the operating temperature shall not exceed 160℃. Aluminum and aluminum alloy are more used in the pipeline of cryogenic engineering. Aluminum and aluminum alloy pipe cutting can be used craft saw blade, machinery (sawing machine, lathe, etc.) and grinder, not using flame cutting; Groove should be selected for mechanical processing, do not use oxygen - flame.


                        When pipe insulation, asbestos rope, asbestos board, glass wool and other materials with alkaline, should choose neutral insulation materials. Aluminium alloy pipe material should say compound pipe material is pipe diameter ≥300mm above ideal pipe material of water supply and drainage pipe. It has the advantages of high strength, good rigidity and corrosion resistance of non-metallic pipe. But it is a kind of pipe material that develops slower at present.


                        Two kinds of material thermal expansion coefficient is bigger, such as adhesive is not firm and the environment temperature and medium temperature change is more drastic, easy to take off, and lead to quality decline. Cold processing method should be adopted for the connection of the composite pipe, while hot processing method is easy to cause expansion, deformation and melting of the lining plastic. Generally, there are screw thread, clamp, clamp and other connections.



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