Aluminum alloy steel tube cannot be used as water pipe

Aluminum alloy pipe, aluminum alloy pipe and joints are higher than galvanized pipe. Aluminum alloy steel tube can not be used as a water pipe, because the aluminum tube is less rigid than galvanized pipe, but very flexible. The inner surface of galvanized steel tube is bright and clean. Small pressure loss of compressed air, energy saving. Galvanized steel pipe is beautiful and simple. Aluminum alloy is easy to install and quick to plug. Installation costs are low. Aluminum alloy is easy to disassemble, move and modify.

It is obvious that joining expansion joints by welding must be very time consuming. Secondly, as for the adjustment of the expansion amount of the expansion joint, it must be adjusted in advance before the installation of the expansion joint. If the expansion amount is adjusted during the welding process, it will have a great impact on the installation of the expansion joint. As for the sealing problem, whether there is a good sealing effect is very important for the expansion joint. Many installers have problems when the expansion joint is sealed. A device for conveying gases, liquids, or fluids with solid particles connected by pipes, pipe couplings, and valves.

Usually, the fluid flows from the high-pressure part of the pipeline to the low-pressure part after being pressurized by blowers, compressors, pumps and boilers. It can also be transported by the pressure or gravity of the fluid itself. Pipelines are widely used in water supply, drainage, heat supply, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering and various industrial installations.

Aluminum alloy pipeline, can not use grinding wheel grinding, because using grinding wheel grinding will only make the oxide film fusion on the surface of the welding material, but not really remove. Moreover, if hard grinding wheel is used, impurities in it will enter the weld and lead to thermal cracks. In addition, as A1203 film will be regenerated and accumulated in a short time, in order to make the oxide film as little as possible affect the weld, welding should be performed immediately after cleaning.

Compared with steel structure, aluminum alloy structure has attracted more and more attention in structural engineering due to its advantages of light weight, corrosion resistance and easy processing. Based on the comparison between aluminum alloy as a building material and steel, this paper lists a large number of representative aluminum alloy spatial grid structures at home and abroad, and summarizes the research status of aluminum alloy spatial grid structures and node systems at home and abroad, such as aluminum alloy single and double layer reticulated shells and grids. Dalian aluminium alloy pipeline says, aluminium alloy density is low, but intensity is higher, close to or exceed high grade steel, plasticity is good, can be processed into all sorts of profile, have good conductance, heat conduction and anticorrosive sex, use extensively on industry, usage amount is next to steel. Some aluminum alloys can be heat treated to obtain good mechanical properties, physical properties and corrosion resistance.