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This post was last edited by Thank goodness you're here on 2017-5-18 at 17:18. Nowadays, every household has an increasing number of electrical appliances – refrigerators, televisions, air conditioners, computers, and also the mobile phones we use. All of these appliances rely on screws and nuts to function; as we all know, screws and nuts are used to fix components together, so that the entire appliance can be assembled. The flange surface of the flange nut has grooves, which not only increase the contact area but also help prevent loosening; this is commonly seen in rotating mechanisms. Flange nuts are generally made of iron, but there are also those made of stainless steel. Flange nuts are sometimes also electroplated to meet the color requirements specified by customers. Electroplating can also be divided into environmentally friendly and non-environmentally friendly types. There are various types of electroplating; for example, more expensive environmentally friendly options such as eco-friendly nickel, eco-friendly blue zinc, eco-friendly black zinc, and eco-friendly colored zinc. Of course, there are also cheaper conventional electroplating options like white nickel, white zinc, colored zinc, and black zinc. In one word, environmentally friendly options are more expensive than those that are not. Usage characteristics of flange nuts: 1. Pipe cutting: First, a specialized cutting blade must be installed on a grinding wheel cutter or pipe cutter, and then the stainless steel pipe is cut vertically to the desired length; after cutting, the ends obtained need to be trimmed ； 2. Welding: The two conical flange plates on the left and right sides of the pipe end must be welded using TIG welding. Note that the flange plates used here have grooves; such flange plates are designed specifically for inserting gaskets with flanges on both sides ； 3. Gasket: Install a double-flange gasket between the two flange plates on the left and right sides ； 4. Tightening: Finally, the two flange pieces need to be secured using clamps, and then the handle or the clamp flanges are tightened with fastening screws, which are hex bolts.