What is a common method for joining metal pipes?

• A. Compression fitting
• B. Brazing
• C. Adhesive bonding
• D. Welding

Answer: (D)

Welding is a common method for joining metal pipes because it creates a strong and permanent connection by melting the base material and allowing it to fuse together as it cools. This process is particularly effective for structural and pressure applications, where the integrity of the joint is critical. Various welding techniques, such as MIG (Metal Inert Gas), TIG (Tungsten Inert Gas), or stick welding can be employed depending on the type of metal and the specific requirements of the project.

Welding ensures that the pipes maintain their strength and ability to handle high pressures and temperatures, making it a preferred choice in industries where reliability is paramount. Unlike some other methods, welding does not introduce foreign materials or weaken the joint, allowing for a seamless transfer of stress across the connection.