Main Inspection Items and Methods of Seamless Steel Pipes
The inspection of seamless steel pipes generally includes: inspection of geometrical dimensions and surface quality; chemical composition, mechanical properties, process performance, inspection of hig...
Development Status of Oil Casing Pipe
With the development of oil well gas drilling operations to more severe working conditions such as deeper, higher pressure and higher temperature, and the continuous improvement of oil drilling techno...
Color Analysis of Galvanized Seamless Steel Pipes
Galvanized seamless steel pipes have very little galvanizing, only 10-50g/m2, and their corrosion resistance is much worse than that of hot-dip galvanized pipes. Regular galvanized pipe manufacturers ...
Causes of Cracking In Oil Well Casing Couplings
Based on the analysis of fracture morphology, chemical composition, mechanical properties, microstructure and corrosion product composition, the causes of cracking of casing collar of an oil well were...
Seamless Steel Pipe Cold Treatment Purpose and Method
Operation method: The quenched seamless steel pipe is cooled to -60 to -80 degrees or lower in a low temperature medium (such as dry ice, liquid nitrogen), and the temperature is uniform and then the ...
Key Points of Annealing, Normalizing,Quenching and Tempering of Seamless Steel Pipes
1. Seamless steel pipe annealing operation method: After heating the seamless steel pipe to Ac3+30~50 degrees or Ac1+30~50 degrees or below Ac1, it is generally cooled slowly with the furnace temperat...
