To connect unthreaded galvanized piping, you have got to make use of a coupling to put the two pipes alongside one another. Once you have chosen the proper coupling, you have got to use fastening bolts in addition to a torque wrench to keep the two pipes coupled. To make https://www.malleableiron-pipefitting.com/industry-knowledge/how-to-connect-non-threaded-galvanized-pipes.html