What is a butt welded flange?

The welding flange design is used for butt welding to inclined pipes, forming a very strong connection. These flanges are often used in high-pressure and extreme temperature systems. Docking welding transfers the stress of the flange itself to the connected pipeline. Welded flanges have the following characteristics:
Size and aperture:
The size of the welded flange corresponds to the nominal pipe size of the connected pipeline.
Inner diameter refers to the thickness of the pipe wall. Welded flanges typically come in standard (STD), Schedule 10 (S10), and extra heavy (XH) types.
If a welding neck flange is specified, the size and aperture must match the nominal pipe size and specifications.
Any standard mismatch will alter fluid dynamics and ultimately weaken.
model:
Grade description: The pressure and temperature capacity of the flange. 150 # to 1500 # are the standards for welding neck flanges.
To determine the pressure and temperature requirements of the system.
Shape:
There are two options for welding flanges: convex surface (RF) and flat surface (FF). Face refers to the structure on the back of the flange. The RF flange has a lip inside the bolt ring, while the flat flange, as the name suggests, is completely flat.
If you want to replace the flange in the existing model, you must match the corresponding flange profile. Convex flanges must never be installed on flat flanges.
RF flanges are typically used on pipelines at higher pressures and temperatures.
Material Science:
Welded neck flanges are usually made of carbon steel, but can also be made of stainless steel and aluminum.
When excellent corrosion resistance is required, stainless steel can also be used for production. The welding flange is made of 304L and 316L to improve weldability.
When lightweight products are needed, aluminum products are also an excellent choice.
 
 
Gaskets and double headed bolts
Gaskets and bolts are essential accessories for flange installation.
 
The type of gasket you need depends on the flange surface you choose and the temperature of the environment.