Monthly Archives: January 2022

The mechanism of seamless steel pipe (smls) passivation can be explained by film theory, that is, it is believed that passivation is due to the action of metal and oxidation properties. When it acts, ...

Seamless pipes (smls pipe) are more expensive than welded pipes, but they are stronger. The ASME rated working pressure of seamless steel pipes is usually 20% higher than that of welded steel pipe pil...

High-frequency welded pipes (ERW) need to go through a series of processes from raw materials to finished products. The production process flow mainly depends on the product variety. The completion of...

Hot-dip galvanized steel pipe: The hot-dip galvanized steel pipe is first pickled on the steel parts. In order to remove the iron oxide on the surface of the steel parts, after the pickling, it is pas...

Thick-walled seamless steel pipes are widely used in vehicles, airlines, crude oil, chemical plants, engineering construction, heating furnaces, military and other units, and have a major influence in...

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...

“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...

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...

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...

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...