The material of the electric heater wiring terminal pin is usually stainless steel, iron chromium aluminum and nickel chromium. The size of the electric heater wiring terminal pin can be customized according to customer requirements.
There are two kinds of connection methods used by most of heaters manufacturing company for the terminal pin and the heating wire: one is the spot welding method of the welding machine, and the other is relatively simple is the direct threading of the terminal pin thread and the wire heating.
The terminal pin is used for electric heating pipe accessories, its main specifications are: ф1.7, 1.9, 2.0, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 3.0 and need to screw thread specifications: M2.5, ф2.5 , M3, M4, with lengths available ranging from 40 to 300
The connection between the terminal pin and the heater must be sealing, firmness, insulation and easy disassembly. Generally speaking, the cross-sectional area of the stainless steel material used for the terminal pins should be more than three times the cross-sectional area of the connected heating material to ensure that the temperature of the terminal pin is low enough to connect the wires. Therefore, it is not necessary to use the same grade of materials as the electric heating element for the lead rod. Generally, Cr13Al4 with low resistivity and good processing performance can be selected. And can directly use hot-rolled bar.