This tends to compromise the toughness and integrity from the joint. To avoid porosity, take out the zinc coating within the weld spot. Generally, a galvanized pipe should have threading on Every single end. But How will you connect 1 without the need of threads? Implementing corrosion inhibitors: For current https://www.malleableiron-pipefitting.com/industry-knowledge/how-to-connect-non-threaded-galvanized-pipes.html