What does "beveling" refer to in pipeline welding?

• A. The process of coating the pipe for protection
• B. The process of shaping the edges of pipe ends to prepare them for welding
• C. The inspection technique for weld integrity
• D. The method for heating the metal pipe ends

Answer: (B)

Beveling refers to the process of shaping the edges of pipe ends to prepare them for welding. This technique is critical in pipeline welding as it helps ensure a proper fit and alignment of the pipes, which allows for a stronger and more effective weld. By beveling the edges, it creates a joint that facilitates penetration of the weld material into the joint, enhancing the strength and durability of the final weld. The angles and shape of the beveled edges are designed to accommodate the welding process, improving the overall quality of the weld and reducing the likelihood of defects.

The other options relate to different aspects of pipeline construction and maintenance but do not fit the definition of beveling. For example, coating refers specifically to protective measures applied to the exterior of pipes to prevent corrosion, while inspection techniques for weld integrity focus on assessing the quality of existing welds. Heating pipe ends is pertinent to preparing for certain welding methods but does not specifically involve shaping the edges of the pipes, which is the essence of beveling.