This tends to compromise the toughness and integrity of the joint. To avoid porosity, take out the zinc coating within the weld location. We show 29 in stock Note: Your Order is for greater than We've in stock. We'll provide an estimated transport date when We've got that details available. https://www.malleableiron-pipefitting.com/industry-knowledge/how-to-connect-non-threaded-galvanized-pipes.html