What type of welding is required for pipes that are 2 inches or more in diameter?

The requirement for using butt welds for pipes that are 2 inches or more in diameter is based on the need for achieving strong and reliable joints capable of withstanding high pressures. Butt welding involves joining two pipes by aligning them end to end and welding along the edges. This method creates a joint that is strong and has a uniform cross-sectional area, making it ideal for maintaining the integrity of high-pressure systems.

Butt welds are especially important in critical applications, such as high-pressure boiler systems, where the risk of leaks and structural failure can have serious consequences. The design can also facilitate easy inspection and maintenance, ensuring safety and reliability.

While other welding types, such as socket and fillet welds, might be suitable for different scenarios and pipe sizes, they do not provide the same level of strength and structural integrity required for larger diameter pipes under high pressure. Therefore, for pipes that are 2 inches or greater in diameter, butt welding is the standard and most effective method used in the industry.