Buttweld fittings are pipe fittings that change the pipeline’s path. These fittings are crafted to be welded on-site and allow for changes in direction, pipe diameter, branching, and end. Buttweld fittings are used for piping systems larger than 2 inches in diameter. A pipe fitting improves a system for safely and efficiently transporting liquids (oil, gas, steam, chemicals) over short or long distances.
Butt welds come in a multitude of dimensions, shapes, and sizes. When compared to threaded and socket weld fittings, these fittings have massive benefits. Long radius elbows, crosses, unions, nipples, hex plugs, concentric reducers, eccentric reducers, and Tees, reducing tee equal tee, reducing cross, equal cross, reducing cross, equal cross, reducing cross, equal cross, reducing cross, equal cross, and so on.
In industrial pipe systems, buttweld fittings are used to change direction, branch off, and mechanically connect equipment to the system. The most common type of welded pipe fitting is the elbow, which is defined by the nominal pipe size and pipe schedule. Buttweld fittings start with seamless or welded pipe and are formed (through multiple processes) into the shape of elbows, tees, and reducers, among other things.
Different materials, such as duplex, carbon, low-alloy, stainless, and nickel alloys, are used to make these fittings. ASME Buttweld fittings have a number of advantages, including being strong and leak-proof, having fitting attachments that reduce pressure, having a long service life, and being moderately relatively affordable to use. These fittings each have their own characteristics that also vary depending on the material used in the fabrication process.
Let’s discuss the different types of Butt Weld Fittings in brief. Here are the types of fittings given below.
Buttweld Elbow: –
The most widely accepted elbow angles are 45o, 90o, and 180o. Heating, cutting, and bending seamless pipes are widely used to create small buttweld elbows. Larger buttweld elbows can be made using welded pipes or steel plates. Two special types of pipe elbows are:
- Reducing Elbow: It is used to connect when inlet & outlet pipes are in different bore sizes
- Meter Elbow: It is a pipe that has a right-angled bend and the flow rate can be measured by using a gauge.
Buttweld Tee: –
The butt weld tee has a 90 ° branch and a straight line pipe that will link up to some other device for pipeline accessories. Petroleum, aerospace pharmacy, chemical industry, metallurgy, electric power, military industry, engineering support, and other industrial pipelines are all typical applications for these tees.
Buttweld Cross: –
When pipelines are to be linked at 90º in the branch, Buttweld Cross fittings are recommended. Nevertheless, depending on the bore size, there are two types of buttweld cross:
- Equal Cross
- Reducing Cross
Buttweld Reducer: –
Concentric Reducer: A welded concentric coupling is also recognized as a concentric reducer. It allows for the welding connection of a large pipe to a smaller pipe. A concentric reducer allows two pipes with the same centerline to be welded together.
Eccentric Reducer: An eccentric reducer is also understood as a welded eccentric coupling. It empowers the welding of a large pipe to a smaller pipe with a centerline offset.
Buttweld Caps: –
Buttweld Caps are being used to permanently or temporarily stop the flow or blind the pipeline (during maintenance and reparation works). Buttweld pipe caps show up in a variety of sizes and shapes.
Stub End: –
It’s a short-length pipe with such a flared outwards one end and a welded pipe of the same diameter on either end.
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