Seamless steel pipes should conduct mechanical performance testing. Seamless steel pipes are widely used in manufacturing structures and mechanical parts, such as petroleum drillin
The detection methods of the surface defects of the square tube are mainly the following five: 1. Electric vortex detection There are many forms of electric vortex flow detection.
Galvanized square tube is widely used in building steel structure, automotive manufacturing, mechanical manufacturing, bridge structure due to excellent corrosion resistance, deep
The important raw materials of galvanized seamless pipes have a large pressure resistance. Generally it is difficult to master the method of cutting and cutting conditions in order
Hot rolling (squeezing seamless steel pipe): round tube blank → heating → perforation → three -rolling rolling rolling, continuous rolling or squeezing → desert
Cold pull -out seamless steel pipes: round tube blank → heating → perforation → head → annealing → pickled → oil (copper plating) → multiple cold
In the building materials industry, the development of various pipes is different. Due to the differences in their own characteristics, there is also a certain gap between the rela
Splee Dead characteristics: Show irregular or regular local indentation and meat on the longitudinal surface of the steel pipe. The shapes are nuclear, strip, horizontal pressure i
Folding Defective characteristics: ① The steel pipe has a regular folding of a triangular shape, a straight line -shaped shape, and a single seam straight line or irregular sheet.
Architecture: Seamless steel pipes are important materials in the construction field, especially in high -rise buildings and large structures. In buildings, seamless steel pipes ca
The raw material of the rolled national standard steel pipe is the round tube blank. The round tube embryo must be grown by the cutting process of about 1 meter by cutting and proc
When the application characteristics of galvanized steel pipes are different, the aluminum alloy composition after light thermal treatment is different, so the production process o