The company “KSP Steel” is the first manufacturer of steel jointless pipes in Kazakhstan. The total area occupied by production objects is about 133 hectares. More than 7,500 highly qualified workers labour at the factory. The enterprise has a complete production cycle from raw materials to finished products. The production complex includes the steel plant, pipe rolling and smoothing of pipe. Such integrated structure allows to realize the company potential as much as possible. The main factory activity is connected with the production of steel jointless pipes of different sizes and diameters. Nowadays products of the factory are successfully used for the construction of pipelines by oil-and-gas, geological prospecting, machine building and industrial enterprises of Kazakhstan. Pipes of this company are supplied to the domestic market as well as to CIS countries and to other foreign countries, for example, to the USA. The rated capacity of the factory is 270,000 tones of steel jointless pipes per year. The steelmaking has the total productivity of 800,000 tones per year.
Let’s move to the pipe rolling. The process of a pipe production is the following: a round cast workpiece is put onto a hot rolling line where it is cut, heated, stitched and rolled till a pipe of necessary size is ready.
This is a continuously cast round workpiece. Its diameter varies from 150 to 300 mm, length 5-12 meters. Steel jointless pipes are made exactly from these workpieces.
A hot rolling line is designed to transform cast workpieces into hollow ones with a certain diameter and thickness. At first a workpiece is placed in a carousel heat-treating furnace, where it is evenly heated to the temperature of 1280 °C.
Then the pipeline moves the heated workpiece to a complex of rolling that consists of several stages.
At first the piercing mill with rollers of the conic type stitches a solid workpiece into a hollow one, forming a shell.
Then the hot rolling mill with six stands forms a wall thickness for a future wall.
Then the future pipe is heated again.
At the next stage the pipe gets into the reducing mill where it is rolled to the final diameter and wall thickness.
The mill consists of 24 triple roll stands.