Customer orders tube sheet flange
Tube sheet is widely used in tubular heat exchanger, boiler, pressure vessel, steam turbine, large central air-conditioning and other industries.
It is mainly used in chemical vessels, such as tubular heat exchangers, pressure vessels, boilers, condensers, central air conditioners, evaporators, and seawater desalination, to support and fix the tubes. The metal material makes it not only very rigid, but also has great heat conduction performance.
Different materials shall be used according to different service environments. Generally, the first and second class pressure vessels shall be made of carbon steel composite plates without corrosive medium. In case of strong acid, high pressure, high temperature, nuclear energy and other environments, stainless steel, carbon manganese steel, titanium alloy and other corrosion-resistant materials are required.
The material SA-350 LF2 CL. 1 required by the customer is also a commonly used container plate material. The following N+FGP is the requirement for the heat treatment method and grain size of the product, and its full name is Normalize+Fine Grain Practice. Generally, the heat treatment of quenching and tempering is more common for this low temperature material. And the low temperature impact test conducted in the laboratory can reach -45℃, while normalizing is generally -18℃. However, the grain size of normalizing treatment is finer. The heat treatment method still depends on the use of the product and customer requirements.