Pipes are manufactured from coiled stock with strict ranges and limits of chemical composition having a low content of detrimental impurities (sulphur, phosphorus) and nonmetallic inclusions with a minimum variation in wall thickness.

Precise wall thickness of coiled stock, up-to-date technology, modern equipment, and high precision of rolls ensure that finished pipes have better geometry compared to the same seamless pipe. That allows us to make more precise line pipe design calculations and therefore to lower the cost.

The inside and outside flash is removed in the welding line. The outside flash is completely removed, the height of the inside flash shall not exceed 0,3 mm.

Weld joint is non-full body heat-treated to normalize weld seam structure and achieve the same strength as of base metal.

The use of a specially designed steel grades 07ГФБ, 13ХФА, 17Г1СУ allows us to manufacture pipe in a cold-resistant model (with a working temperature below -60°С) in accordance with ТU 14-3Р-33-2005.

The use of the special steel grade 13ХФА allows us to manufacture pipe with improved corrosion resistance characteristics.

Upon request by the purchaser, we can manufacture pipe of intermediate sizes and grades.

In order to protect pipe from corrosion while in transit, pipes are given a protective coating.