Butt Welding Fittings Overview

- Aug 17, 2018-

Butt welding fittings overview

Butt welding fittings is one of the most commonly used connection types in pipeline system.There is always a lot of demand in different industries, especially for large diameter pipelines.
How butt welding fittings is produced?
This type of pipe fittings will be made by a process called hot forming. This would include bending the pipe and forming it into a shape. The raw material for the butt welding fittings will be the pipe that was firstly cut fitted length. Then heated and make a specific shape through mold. In addition, heat treatment will be performed to obtain the requested mechanical properties and remove residual stresses.

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Benefits of butt welding fittings:
• The welded connection is helpful to achieve more solid connections
• The continuous metal structure will increase the strength of the piping system
• When butt welding fittings match the appropriate pipe schedule wall thickness, they will help providing seamless flow in the pipes
• It offers various turn of pipes by using long, short or 3R radius
• It was found to be cost-effective compared with socket welded or threaded fittings.
• These butt welding fittings will be available in schedule 10 to allow for more thinner wall thickness.
• It has been found that these butt welding fittings are more common in the schedule 10 and schedule 40.
Butt welding fittings need bevel end treatment
According to ASME B16.25, all butt welding fittings have bevel ends. This will be easy to weld between fittings and pipes no need with the help of any additional preparation.
These types of fittings are most commonly used in stainless steel, carbon steel, alloy steel, aluminum, nickel and high yield materials.

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Functions of butt welding pipe fittings
For stainless steel and carbon steel, butt welding pipe fittings will be joint components. From this, piping, valves and equipment can be assembled into piping systems. In addition to supplementing piping flanges in any piping system, butt welding fittings also allow:
• changing the direction of flow in the piping system
• adding or connect equipment and piping
• providing access, branching and take-off for ancillary equipment.
An usual example is to use a butt welding fitting in a pipe that will be reduced the diameter through a concentric reducer then welded to the welding neck flange and connected to the device.