Type 1 and Type 2, while type 1 is the most used structural steel grade.ASTM A242 covers high-strength low-alloy structural steel shapes, plates, and bars.ASTM A242/A242M Standard Specification for High-Strength Low-Alloy Structural Steel.
EMT set screw steel coupling is used to bond unthreaded EMT conduit with EMT conduit. Its heavy gauge steel construction maintains mechanical protection and its set screw construction provides tight connection. In addition, it is pure steel and zinc plate