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
Learn More
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
Learn More
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
Learn More
The classification and basic knowledge of galvanized steel sheets can be divided: according to the galvanizing method:①Hot-dip galvanized steel plate. A thin steel plate is immersed in a molten zinc bath so that a layer of zinc adheres to its surface. At present, continuous galvanizing technology i
Learn More
TIANJIN YUANTAI DERUN PIPE MANUFACTURING GROUP CO., LTD
