How much do you know about the flange of the thermometer?

Many places of use thermometer sometimes need flange installation, plays the role of each are not identical, so, what types of the flange? How much knowledge of flange you know? The following is to introduce the knowledge of the flange! Common flange has the following kinds: reducing flange: DN15 - DN2000 flange, is a kind of metal is characterized by corrosion resistance, acid and alkali resistant, long service life and so on, the surface is smooth, acid and alkali resistant high temperature resistance, good appearance, texture performance is strong, in the light of the professional production overall forging, forging manufacturing, cutting the plate, medium plate rolling process, through high precision CNC lathe turning, ordinary lathe to fine cars, argon arc welding process, the flange is widely used in water conservancy, electric power, power station, pipe fittings, industrial, pressure vessels, etc. , using flange nut, bolt connection. Flat welding flange: flat welding flange plate flat welding flange, with flat welding neck flange. Plate flat welding flange ( PL) , flat welding flange is suitable for the nominal pressure is less than 2. 5 mpa of steel pipe connection. Flat welding flange sealing surface can be made into smooth type, concave and convex type and mortise type 3 kinds. Smooth and flat welding flange are the largest. More than in the mild conditions of medium, such as low pressure not purified compressed air and low pressure circulating water. With flat welding neck flange, SO） , a height is low, flat welding neck flange neck stiffness and bearing capacity of the flange. Compared with butt welding flange, welding workload big, electrode consumption is high, can't withstand high temperature and high pressure and repeated bending and temperature fluctuations, but the installation is convenient, can be omitted weld take knead injury process, more popular. Threaded flange ( TH) : threaded flange is DN8 ~ DN100 nominal diameter, working pressure is 1. 0 ~ 2. 5 ( MPa） Plate threaded flange material is stainless steel, carbon steel, alloy steel. Threaded flange for fire, gas, hot and cold water pipe, oil pipe, air conditioning, air compressor, instrument, hydraulic pipe and other industrial and civil pipe thread locking seal, etc. Flange installation, there are many, is mainly to introduce some commonly used today, if you have any other special requirements on the flange installation, can put forward and manufacturer, the manufacturer will according to the requirements with the appropriate installation.