Abstract International fabrication codes and standards provide minimum distance criteria for proximity welds, although rigorous justification is lacking. These distances are either based on practical experience or mutual agreement often left to the engineering judgment of contractors, inspection engineers, etc., especially in cases repair welds fabricated existing welds. Previous studies have s...

ABSTRACT Excessive residual stress of the girth weld in pipes will directly damage pipe strength during its operation. Accurate measurement and effective reduction can ensure safety natural gas their service. In this paper, an X80-type large-diameter section with welds is taken as research object. The coercive force method used to characterize surroundings, then distribution law surroundings ob...

Girth welded replica of API X70M material have been produced on NG-GMAW welding technique. The particular area interest is to develop suitable girth process parameter using NGGMAW. major aim the work was replicate welds having tensile strength between 650 and 680 MPa. Design Experiment (DoE) method by Taguchi design, some selected processes adopted. Two parameters (factors) – arc voltage wire f...

Radiographic Testing (RT) is widely used in industries, at airport for security checks, medical applications etc. to detect anomalies in materials and human bodies. Radiographic Testing is the common NDT methods used in the construction and fabrication industries for the oil & gas sectors using welding, gas/liquid transmission pipelines, casting foundries, and condition monitoring in existing o...