High-strength steels for casing and pump-compressor tubing

This article describes results of commercial trials performed as part of the development of new high-strength steels for pump-compressor tubing, casing, and the semifinished products for the associated couplings. Studies were made of the microstructure and mechanical properties of tubes made of steels 37G2S and 48G2BM — steels traditionally used at the Sinarskii Pipe Plant — and new steels of type 37KhG microalloyed with V, Nb, and Mo. The results obtained from analyzing the characteristics of the steels and the main parameters of the tube production process were used to develop recommendations on the rolling of tubes in strength classes K and E on the TPA-80 and TPA-140 tube-production units.