Yearly Archives: 2022

Annealing process for seamless steel pipes: The seamless annealing of the seamless steel pipe is to heat the hypo-eutectoid steel to 30~50°C above the Ac3 temperature, and to the temperature range of ...

In high-frequency longitudinally welded pipes (ERW welded pipe), the manifestations of cracks include long cracks, local periodic cracks and irregular intermittent cracks. There are also some steel pi...

1. Construction preparation before use of LSAW steel pipe Pipe trenches must be dug, pipe wells must be built, all kinds of straight seam steel pipes must be in place, and all kinds of tools needed...

Steel pipe piles are commonly used components in the construction of bridge pile foundations. It has the advantages of high bearing capacity, flexible piling and fast construction speed. For complex t...

The straight seam high frequency welded (HFW) pipe has the characteristics of simple production process and fast continuous production. It has a wide range of uses in civil construction, petrochemical...

According to the purpose and the pipe material, the commonly used connection methods of the construction pipeline are: threaded connection, flange connection, welding, groove connection (clamp connect...

There are many ways to inspect the quality of LSAW steel pipes, among which physical methods are also the most commonly used inspection methods. Physical inspection is a method of measuring or inspect...

ERW Casing-Casing made of electric welded pipe as raw material ERW (Electric Resistant Weld) steel pipe refers to a straight seam welded pipe manufactured through a high-frequency resistance weldin...

There are two main raw materials for oil casing pipe: Seamless casing and ERW casing. Today, we mainly discuss seamless casing. Seamless Casing - Casing made of seamless steel pipe as raw material; ...

The high-frequency welded pipe (ERW steel pipe) forming roll is an important part of the welded pipe unit and the technical core of the welded pipe forming process. The forming of high-frequency welde...