Aluminum vs. Stainless Steel Plugs

NDT plugs installed on pipeline

NDT plugs come with either Aluminum or Stainless Steel caps.

#5052 aluminum or #304 stainless steel should be determined by the surface you are working with.

You can ID Alum vs SS plugs by their construction:

Aluminum cap handles are kept on using rivets. 

Stainless caps handles are welded on.