Grade N80 Steel Casing Pipe
API 5CT Grade N80 oil casing pipe is a high-strength and high-toughness carbon seamless steel pipe. The commonly used methods are: quenching and tempering (including direct quenching + tempering after...
Pressure Rating ANSI Class vs Nominal Pressure (PN)
“Pression Nominal” is the rating designator followed by a designation number indicating the approximate pressure rating in bars.
Piping Class Ratings based on the ASME B16.5 – Pipe Flanges and Flan...
How to determine the stainless steel plate
The surface of stainless steel plate is relatively smooth, the plasticity, toughness and mechanical strength are higher, to a certain extent, acid and alkaline gas solution or other corrosive media, i...
Reasons for corrosion of stainless steel pipes
The corrosion of stainless steel pipe mainly occurs in the whole contact with the media environment, which is characterized by uniform thinning along the section. Most of the corrosion occurs in the a...
What is quenching, tempering, normalizing and annealing
The differences of normalizing, tempering, annealing and quenching lie in different processes, different changes of material structure and different results of material properties.
What is quenchin...
The problem of heat treatment defects of medium thick steel plate and its treatment method
With the development and progress of medium thick steel plate technology, people pay more attention to the product quality, and the production enterprises pay more attention to the requirements of pro...
