What type of welding is predominantly used in pipeline construction?

In pipeline construction, shielded metal arc welding (SMAW) is predominantly used due to its versatility and effectiveness in various conditions. SMAW, often referred to as stick welding, involves creating an electrical arc between a covered metal electrode and the workpiece. This process generates heat, which melts the base metal and the electrode, allowing for robust joints that can withstand the stresses placed on pipelines.

The adaptability of SMAW makes it suitable for field applications, where environmental conditions can vary significantly. It can be performed outdoors, even in damp or windy conditions, which is often the case in pipeline construction. Additionally, the equipment needed for SMAW is relatively portable and easy to set up, enabling welders to perform work in remote locations and on-site repairs efficiently.

Other welding methods, while also utilized in pipeline construction, may not offer the same level of practicality across diverse conditions. This is why SMAW is a preferred choice for welding on pipelines.