Dry washing is a form of what?

Dry washing is a technique used primarily in pipefitting to remove excess weld, particularly in situations where welding has created an unsightly or potentially hazardous buildup of material on the pipe or fittings. This process not only cleans the welding area but also prepares the surface for further inspections and coatings, ensuring proper fitting and integrity of the welded joints.

In the context of welding, dry washing helps maintain the intended dimensions and tolerances of the piping system. This is crucial in ensuring that the pipes fit together correctly, which can prevent leaks and mechanical failures in the system. The cleanliness and smoothness achieved through dry washing contribute to the overall quality of the weld and the functioning of the pipeline.

Other options like cold springing, stress relieving, and hot springing correspond to specific methods used to manipulate the physical properties of piping materials or manage thermal stresses, rather than to the cleaning or finishing processes associated with welds. Thus, they do not relate to the concept of removing excess weld.