The flange of a法兰heating tube typically comes in two types: threaded flanges and flat flanges. Threaded flanges commonly come in sizes of 1 inch, 1.2 inches, 1.5 inches, and 2 inches, with the latter being the most used. Threaded flange tubes are generally suitable for low-power heating, usually with power settings ranging from a few kilowatts to a dozen or so. Flat flanges are available in sizes from DN10 to DN1200, and can be designed to meet different power requirements as per the customer's specifications. Flat flange heating tubes are typically used for high-power applications, ranging from a few kilowatts to several hundred kilowatts. They have a surface power that is 2 to 4 times greater than that of air heating surface loads.

Process: The majority of heating tubes with flanges are made using argon arc welding to connect the electric heating tube to the flange for centralized heating. Alternatively, a fastening device can be used, where each electric heating tube is welded with fasteners. These are then securely fastened to the flange cover with nuts. The tubes are welded to the fasteners using argon arc welding, ensuring no leakage. A scientific process is employed for sealing the fasteners.

Features: Primarily used for heating in open and closed solution tanks and circulation systems, it features a high surface power, which is 2 to 4 times the surface load of air heating.