... , 21.3mm, 22mm, core dia is 2.0mm, 3.0mm, 3.4m 3) Reputation and Quality first 1), Product Information We can ... client requirement. I need the chemical composition, length, thread(3/4NPT), anode dia and core dia of Bar-type anode ... machining according your demand. Main application: water heater, water container, pre-polarization of steel structure in seawater, gas pipe, anticorrosion of steel and iron ...