Yearly Archives: 2022

One. Production process introduction of large diameter lsaw steel pipe Rolling machine→Uncoiler→Unwinder→Retripper leveling machine→Vertical roll centering→Shear butt welding→Strip position control (d...

SSAW steel pipe feeds the steel strip into the welded pipe unit and is rolled by multiple rollers. The strip steel is gradually rolled up to form a circular billet with an open gap. The amount of pres...

As a highly efficient special transportation means, pipeline transportation has played an increasingly important role in the fields of oil and gas transportation. Domestic large-diameter transportatio...

For ssaw steel pipe, we all know that the quality of the ssaw steel pipe is the most important thing for the quality of the whole spiral steel pipe, but the inspection of the geometric size of the spi...

The production control of the thick-walled spiral steel pipe is to increase the plastic toughness of the steel pipe, improve the cleanliness of the molten steel, reduce the harmful inclusions, and imp...

In the erection process of the pipeline, the direction is not fixed, we need to use some connecting devices to change the direction. So how does the direction of the ssaw steel pipe change? The elbow...

In the cross-section of the lsaw steel pipe, there is a phenomenon that the outer diameter is not equal, that is, there is a maximum outer diameter and a minimum outer diameter which are not necessari...

Fracture of lsaw steel pipe, mechanical properties of hydraulic (pneumatic) parts used in design, brittle fracture is also related to the use temperature of the component.   It has been found through ...

Transverse crack in the weld of thick-walled lsaw steel pipe D36, D36-Z35 and S355 structural steel plates with thickness of 20~50mm are used respectively to produce marine experience exchanges throug...

After the double-sided submerged arc welded pipe(dsaw pipe) is rusted, the surface of the steel is mainly polished by using a wire brush or the like, and the cleaning and preheating of the spiral pipe...