Glass curtain wall tubeis a common building curtain wall material and is widely used in modern architectural design. It is made of aluminum alloy material, has a unique appearance and excellent performance, and has become one of the preferred materials for the facade decoration of many high-ri
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1. Basic knowledge of pile foundation（1）Pile foundationPile foundation is the most commonly used foundation form among deep foundations. It consists of several piles sunk into the soil and a cap or cap beam connecting the tops of the piles.（2）The function of pilesThe function of the pile i
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Vickers hardness (HV) test is also an indentation test method. It presses a square pyramidal diamond indenter with an included angle of 1360 degrees into the test surface at a selected test force (F). After the holding time, remove the test force and measure the length of the two diagonals of the in
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1. CleaningSeamless steel pipes are cleaned by cleaning. When cleaning, the surface of the steel should be cleaned with solvents and emulsions first. This method is only used as an auxiliary means of anti-corrosion and cannot remove rust from stainless steel pipes. We can also use steel brushes, iro
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