Hot Formed Carbon Steel Elbows

Hot Formed Carbon Steel Elbows

Bangdong is good at manufacturing carbon steel pipe fittings , alloy steel pipe fittings , aluminum pipe fittings . Our factory has several production lines for these pipe fittings , and got full sizes moulds . 

If you have any special requirements , or want high quality pipe fittings with good prices , please contact us freely .  We have ASME B16.9 , DIN standard pipe fittings for your references.

Butt weld pipe fitting more details please check below :

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 102 inch.

Like general category of pipe fittings, Butt weld pipe fittings includes:
Butt weld Elbow in 45 degree or 90 degree or other degree required by clients
Butt weld Tee and Reducing Tee, Reducer, Cap, Cross , lateral tee , barred tee , Y tee etc. 

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

LR 30 degree elbow

SR 30 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.

Classified by dimensions

Butt weld pipe fittings dimensions referred to the pipe dimensions standard ANSI B36.10 and B36.19.
Diameter range: 1", 2", 3", 4", 6", 8" and up to 36".
Thickness range: Schedule 10, schedule 40, schedule 80, XS, XXS and SCH 160

Where fitting dimensions of butt weld fittings are concerned, this would consist diameter in NPS and thickness in schedule.

Concentric reducer, eccentric reducers, long radius elbow, tees. The primary reason why these fittings would be used in construction projects is because they would play an important part in branching off, changing the direction of flow, or even mechanically joining equipment to the system. With the help of specified pipe schedule, butt weld fittings would be sold in nominal pipe sizes.

ELBOWS Manufacturing Process:

Mandrel method (Hot Forming)

• One of the most common Pipe Fittings Manufacturing Process for manufacturing Elbows from the pipe is mandrel method which is kind of hot forming methods.
• In this method, the pipe is cut in pieces and push with the help of hydraulic ram. Induction heating coil heats the pipe and, it is pushed over a die called "mandrel" which allows the pipe to expand and bend simultaneously.
• This method can be used to manufacture a wide range of the diameter of elbows

Extrusion Method

In cold Extrusion method, a pipe with the same diameter as finished product is pushed through a die and formed into its desired shape. Usually applied to stainless steel small to medium sizes elbows.

UO Method

UO method is used to manufacture medium size of the elbow, tee, and reducers. The plate is cut out into a specially designed shape, it is formed first into a U-shape using a die and then into an O-shape or tubular form using another die, that is why this method is known as UO method. Once the fittings formed in tumbler shaped it is welded from inside and outside of the closing seam. A cut plate is 1st from in U shape and then in O shape.

Hot Forming Method

In a Hot Forming Die Bending method, a Pipe is heated to forming temperature & formed in the die with the specific shape, this process may be repeated as needed to obtain the required shape, size and wall thickness. Usually applied to thick-wall items that cannot be bent on a mandrel die.

Bangdong have plenty stock of pipe fittings , welcome inquiry .