Galvanization can be completed a few different ways. Zinc can either be applied to iron or steel to give the metal a thin layer of defense against corrosion. The process was produced in Europe from the 1830s. Looking for certain steel facts, field guides, or metal maintenance ideas? IMS’ site https://www.malleableiron-pipefitting.com/industry-knowledge/how-to-connect-non-threaded-galvanized-pipes.html