Plumbing Problems? See If You Can Spot the Fix!In piping, what does the abbreviation "MJ" stand for?43%Next Correct Incorrect Mechanical joint (MJ) piping is reliable and widely used. It follows the size standards set by AWWA C111. In piping, what does the abbreviation "MJ" stand for? Mechanical joint Many jointed Myopic jointed Myriad jointed 43%
