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1. The site or warehouse where the steel is kept should be selected at the midpoint of clean and clean, poor drainage, and away from the factories and mines where harmless gas or dust occurs. Weeds an...

1. High frequency welding process of straight seam steel pipe: according to the way in which the high frequency current generates heat in the workpiece can be pided into high frequency welding by cont...

The overall heat treatment process and overall heat treatment of the seamless square tube are characterized in that there is no temperature difference in the pipe wall during the treatment process, no...

The boiler tube is a type of seamless tube. The manufacturing method is the same as that of the seamless pipe, but there are strict requirements for the steel used in the manufacture of the steel pipe...

There are two main methods for forming welded square tubes: solid bending and hollow bending. 1. solid bending It means that the bending is compacted, and the inner and outer rollers and the inner ...

Apart from the factors such as coating variety, coating quality and construction condition, the surface treatment of elbow has an effect on the service life of the coating, which accounts for about 50...