Description
The main activity of our company is the production of profile, steel and round pipes on an electric welding mill from strips of our own manufacture. The raw material for our products is rolled steel that has passed factory quality control and fully complies with GOST requirements. The quality of the raw materials used is confirmed by the relevant certificates from manufacturers.

Production of electric welded pipes
Pipes manufactured by electric welding have a diameter of 8 to 2450 mm and can withstand pressure up to 1.6 MPa.

Cold-rolled (for pipes with walls of 0.4-2.5 mm) and hot-rolled (for thick-walled pipes) sheets are used as raw materials for future pipes. Cold-rolled steel pipes have a higher quality surface, with fewer defects, and the product is generally highly accurate.

Large-diameter pipes have a spiral seam, the rest have a straight seam.

Standard sizes of electric-welded pipes
GOST 1070491 defines the ranges of steel electric-welded pipes. They are divided into groups:

A — by product strength.
B — by alloy chemical composition;
B — by strength and chemical composition.
D — there are no conditions for pipes of this group.
There are two types of length of steel electric-welded pipes.

Non-dimensional:
— D (diameter) less than 30 mm — from 2 m;

— D 30-70 mm — from 3 m;

— D 70-152 mm — from 4 m;

— D from 152 mm — from 5 m.

It is possible to produce straight-seam electric-welded pipes — from 10 m with a diameter of 152 mm; from 4 m with a diameter of less than 70 mm.

Dimensional:
— D less than 70 mm — 5-9 m;

— D 70-219 mm — 6-9 m;

— D 219-426 mm — 10-12 m.

Diameters over 426 mm are only available for non-dimensional length pipes. By agreement with the plant, you can order a 6-12 m electric-welded steel pipe with a diameter of 70-219 mm.

Electro-welded pipes have two accuracy classes:

with end trimming (butting) and burr removal;
without trimming and removing excess metal.