What is the use of plug weld?

Plug Weld or slot weld, It is used for attaching flat plates using one or more holes or slots in the top part and then filling with filler metal to fuse the two parts together.

A plug weld, also known as a rosette weld, is a process that fuses two metals together by making a weld inside small circular holes. This typically involves two overlapping sheets or pieces of metal with the holes in the top one. The weld fills the hole in the uppermost material, joining the two workpieces together.

A weld plug is a type of mechanical fastener that is used to seal off or close an opening in a metal object, such as a pipe or a tank. It consists of a small, circular disc made of a compatible metal, which is inserted into the opening and welded into place to create a secure, leak-proof seal.

Weld plugs are typically made of the same material as the object being welded, such as steel or aluminum, to ensure compatibility and prevent corrosion. They may be designed to fit into a variety of different types of openings, including threaded holes, flanges, or other types of openings.

Weld plugs are commonly used in a variety of industrial applications, such as oil and gas pipelines, chemical processing plants, and other facilities where the safe and reliable containment of fluids and gases is essential. Proper installation and welding techniques are critical for ensuring a strong and durable seal, and regular inspection and maintenance can help prevent leaks and other potential issues.

In addition to their use as a sealing mechanism, weld plugs may also be used to fill unwanted or unnecessary openings in metal objects, such as holes or cracks in a pipe or tank. This can help prevent the entry of foreign materials or contaminants and ensure the structural integrity of the object.