Carbon steel flange, namely the body material is carbon steel flange or end flange connector. Which contains carbon steel flange, known as carbon steel flange. Common material is cast carbon steel grade WCB, forging A105, or Q235B, A3, 10#, #20 steel, 16 manganese, 45 steel, Q345B and so on.
There are three types of carbon steel flange sealing surface: flat sealing surface, suitable for the occasion of low pressure, non-toxic medium; Concave and convex sealing surface, suitable for slightly higher pressure occasions; Tenon groove sealing surface, suitable for inflammable, explosive, toxic media and high pressure occasions. Ordinary rubber gasket is suitable for the temperature below 120℃; Asbestos rubber gasket is suitable for water vapor temperature is lower than 450℃, oil temperature is lower than 350℃, pressure is lower than 5MPa occasions, for general corrosive media, the most commonly used is acid-resistant asbestos plate. Carbon steel flange gasket is a kind of circular ring made of material with plastic deformation and certain strength.

Stiffness requirements for carbon steel flange, flange design, strength calculation, only the few stiffness calculation, but more and more of the production practice has proved that may also affect the flange sealing flange stiffness, less rigid flange buckling deformation will produce too much, make the gasket stress is not uniform, and cause leakage. Carbon steel flange connection is a detachable connection. According to the connected parts, it can be divided into container flanges and carbon steel flanges. Lens or other shapes of metal gaskets made of copper, aluminum, No. 10 steel, stainless steel are used in high voltage equipment and piping. The contact width between the high pressure gasket and the sealing surface is very narrow (line contact), and the processing carbon steel flange of the sealing surface and the gasket has a high finish.