Determination of the dimensions of the heat-affected zone in welding gas pipeline components

Abstract

Analytical decisions supported by experimental data were used to determine the dependences for calculating the size of the heat-affected zone (HAZ) in multilayer welding of circumferential joints in transmission gas pipelines. Data on the dimensions of this zone are essential for evaluating the possibility of applying cold cutting in the rejection of elements of gas pipelines because of defects in circumferential welded joints or welded joints in transition rings in the vicinity of circumferential welded joints.

Keywords:

• gas pipeline
• heat-affected zone
• welding
• welded connection
• calculation
• dependence
• experiment