Seamless Elbow Tee Reducer Fittings

Seamless Elbow Tee Reducer Fittings 

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Butt weld fittings is one of the most popular connection type in pipeline systems. It always been required in large quantities in different industries, and especially for the large diameter pipelines.

What is Butt Weld Fittings

Butt weld is to connect pipes or fittings ends by welding. It`s a weldable steel pipe fitting that would allow to branch off, allow for change of direction of flow, attach auxiliary equipment, or reduce the size of the pipe.

In the case of forged steel butt weld fittings, you would find them to be manufactured according to ANSI/ASME B16.9.

Also known by welded pipe fittings

Butt weld fittings would also be referred to as welded pipe fittings. When these would be used in stainless steel and carbon steel, they would be able to offer certain advantages as compared to socket weld and threaded fittings. Whereas socket weld would only be available up to a specific size, you would find butt weld fittings to be available in sizes starting 1/2 inch to 72 inch.

Like general category of pipe fittings, Butt weld pipe fittings includes:
Butt weld Elbow in 45 degree or 90 degree
Butt weld Tee and Reducing Tee, Reducer, Cap, Cross

Butt weld Elbow

Butt weld elbow is to change fluid direction in pipeline systems, it has long radius (LR) and short radius (SR) types, and has different degree covers 45 degree, 90 degree and 180 degree. So there are:
LR 45 degree butt weld elbow: 45 degree elbow that with long radius (1.5 x Diameter), and change fluid direction by 45 degree.
LR 90 degree elbow
SR 45 degree elbow: Short radius (1 x Diameter) elbow in 45 degree, change direction.
SR 90 degree elbow

More than 90 degree elbow we will call it as steel bend. Like LR/SR 180 degree bend.

Butt weld elbow dimensions could be specified as diameter (in NPS) and thickness according to ANSI, samples as LR 90 degree elbow 4 inch and thickness in schedule 40 or schedule 80.

Butt weld Tee

Butt weld tee (equal tee) has a 90 degree branch along with a straight pipe, it will provide a connects for to install an additional equipment to a pipeline. With the tee structural, same sides of the ends could be welded to the pipe, 90 branch was left open for weld another pipe or a device.

Butt weld Reducing Tee

Same structural of the equal tee, but the 90 degree branch has a smaller size than the straight pipe diameter. So it is used to install a equipment or a pipe with smaller size.

Butt weld Reducer

It has concentric reducer and eccentric reducer two types, used for adjust the fluid rate and speed, by welded a large diameter pipe on one end and a smaller diameter pipe on the other end.

Common material types of butt weld fittings

Same with socket weld fittings, you would now be able to find butt weld fittings to be available as butt weld elbow, tee, out lets (olets), reducers, and caps. In fact, these would be some of the most common type of butt weld fitting and would be specified according to schedule of pipe and nominal pipe fittings.

Body material

It includes different body materials of alloy, stainless and carbon steel butt weld fittings. Therefore, it usually uses welded or seamless pipe as the starting material. Could be manufactured by forging, with the help of multiple processes, in order to get the shape of tees and elbows, amongst the other things.

Stainless steel butt weld fittings usually in thin thickness

Just like you would find normal pipe to be sold from Schedule 10 to Schedule 160, you would find the case to be same for butt weld fitting as well. In stainless steel, butt weld fittings have been found to be more common. This would be thanks to the cost advantage that it has to offer. Schedule 10 fittings would also be more common in stainless steel fittings.

Carbon steel butt weld fittings

Carbon steel butt weld fittings includes body material in ASTM A234 WPB (most commonly) and WPC, MSS-SP-75 WPHY . And thickness usually at schedule 40 steel pipe fittings, STD, or 80, where pressure class ranged with 1500 psi, 2500 psi, 3000 psi, 6000 psi and 9000 psi.

Alloy steel butt weld fittings

Alloy steel butt weld material usually in ASTM A234 WP1, WP5, WP9, WP11, WP22, WP91 etc.

Butt weld fittings have beveled ends treatment

All of the butt weld fittings would have beveled ends as per ASME B16.25 standards. This would help to create a full penetration with requiring any extra preparation.

These kinds of fittings would most commonly be used in cases of stainless steel, carbon steel, alloy steel, aluminum, nickel, and high yield material.

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