Using direct plumbing components in more mature galvanized pipe methods, which may create a risk of guide contamination. To connect threaded galvanized pipe, include the many threads with pipe dope, or wrap the threads with PTFE plumber's tape. This assists in developing a leak-proof connection. When the connection is hand-limited, https://www.malleableiron-pipefitting.com/industry-knowledge/how-to-connect-non-threaded-galvanized-pipes.html