The Oil and gas exploration is one of the most strategic industrial sectors in Brazilian economy. discovery deep water reserves adds more difficulty to already problematic use materials equipment extremely corrosive environments. With objective increasing service life equipment, consequently reducing cost maintenance preventing against environmental catastrophes, it common CRA claddings via wel...

The paper examines the behaviour of buried continuous pipelines crossing strike-slip faults using experimental and numerical modelling. A newly developed experiment setup is presented along with derivation relevant scaling laws non-dimensional terms governing global response to faulting. Four model tests are carried out understand performance results through derived framework. Three-dimensional...

In this study, the influence of heat input and post-seam annealing (PSA) temperature on microstructure impact toughness electric resistance welded (ERWed) API X70 steel pipe was investigated. The ERW seam welds pipes were fabricated with low, moderate, high inputs, followed by PSA process at 950 ℃. Regardless input, exhibited good weldability, resulting in similar factors, i.e., metal flow angl...

In order to achieve integrated condition in the girth welding of high pressure natural gas transmission pipelines, the weld zones and its surrounding area should have good mechanical properties. Residual stresses are an important defect especially in the girth welding of the pipeline. In this study, two API X70 steel pipes (with spiral seam weld) of 56 inches outside diameter and 0.780 inch wal...

Hot torsion test (HTT) has extensively been used to analysis and physically model flow behavior and microstructure evolution of materials and alloys during hot deformation processes. In this test, the specimen geometry has a great influence in obtaining reliable test results. In this paper, the interaction of thermal-mechanical conditions and geometry of the HTT specimen was studied. The commer...