GOST 8731-74, 8732-78, R53383 - 2009
Pipes are supplied from the following steel grades 10 - 45, 20X - 40X 30KhGSA, 40KhN, 40HN2MA, 09G2C and others as agreed.
Perhaps the production of non-standard sizes of pipes, tubes with offset by geometric tolerances, pipe with increased wall thickness accuracy (+ / - 6%) and OD (+ / -0.5%), osobotolstostennyh pipes with a D / Sdo and a wall thickness of 3.6 to 55 mm.
The tubes may be subjected to isothermal annealing and grind on the outer surface.
Steel steamless hot-deformed