A large amount of oil and gas production needs to be followed by optimal pipeline maintenance. Most cases pipe leaks are sudden in nature that able cause losses over a long period time. The consisting sand particles increase erosion rate, especially at the elbows. Cases prevented through routine inspections based on accurate rate predictions. This study aims predict elbow piping systems using c...

The complex properties (mechanical, microstructure, and electrochemical) of controllable rolling X70 steel pipes the main gas pipeline with a diameter 1420 mm after an operation for 20 years emergency reserve pipe similar period storage were studied. Taking into account specified heterogeneity caused by technological effect on rolling, it is difficult to draw unequivocal conclusions about opera...

  Abstract   Recovery and recrystallization phenomena and effects of microalloying elements on these phenomena are of great importance in designing thermomechanical processes of microalloyed steels. Thus, understanding and modeling of microstructure evolution during hot deformation leads to optimize the processing conditions and to improve the product properties.   In this study, finite element...

Study of stress-corrosion cracking welded joints made X70 steel at cathodic polarization in near neutral solution NS4 was carried out. It established that the tendency base metal to cracking, estimated by KS coefficient, increases from 1.07 1.13 whereas potential changing corrosion maximum protective -1.05 V. Such regularity correlates with increasing hydrogen penetration through steel, which V...