Although guide drinking water piping was discontinued during the sixties, galvanized pipes ended up nevertheless in use as late as 1990. The corrosion due to these pipes can Construct up within the water source. To connect threaded galvanized pipe, include the many threads with pipe dope, or wrap the threads https://www.malleableiron-pipefitting.com/industry-knowledge/how-to-connect-non-threaded-galvanized-pipes.html