Butt Weld 45 Degree Elbow

What is Butt Weld 45 Degree Elbow

Butt weld 45 degree elbow is also known as “45 bends or 45 ells”. B45 degree elbow is used to connect tubes at a 45 deg pipe angle. As the name suggests, this is a pipe fitting device which is bent in such a way to produce 45 change in the direction of flow of the fluid/gas in the pipe.

Like a 90 elbow, the 45° pipe elbow also attaches readily to pipes of various materials like plastic, copper, cast iron, steel, lead, rubber etc. They are typically made as LR (Long Radius) elbows. These types of elbows are available in various sizes (in mm or inches). They are available with different male to female BSP thread connections. Providing a wide choice of colors, these 45° elbows can be manufactured to meet different specifications, in terms of size and diameter.

Butt weld 45 degree elbow widely used in chemical, food, water supply facilities, electronic industry, chemical piping, horticulture, agricultural production, solar equipment piping, air conditioning piping and many other applications.

Specification of Butt Weld 45 Degree Elbow

ASMT B16.9 Butt Weld 45 Degree Elbow

Standard Scope

Butt Weld 45 Degree Elbow production standard is ASME B16.9. The standard includes specifications of  NPS 1/2 to NPS 48 (DN15-DN1200) factory-made wrought butt welded pipe fittings overall dimensions, tolerances ratings, test methods and markings.

Supply Range for Butt Weld Pipes Fittings Refer ASME B16.9

Standard: ASTM A234, MSS SP-75, ASTM A403, ASTM A420
Types: Elbow, Tee Equal and Reducing, Cap, Concentric/Eccentric Reducer
Size Range: 1/2”, 1”, 2”, 3”, 4”, 6”, 8”, 10”, 12”, 16”, 20” to 48”.
Thickness: SCH 10, SCH 40, SCH 80

Units

Units under ASME B16.9 shall be stated in both SI (Metric) and U.S. Customary units. Designation for size is NPS

How a butt weld fitting is made

This type of pipe fitting is typically manufactured using a process called hot forming. The process involves bending the pipe and then shaping it into the desired form. The starting material for these fittings is a pipe that is first cut to the required length. It is then heated and molded into specific shapes using dies. Additionally, heat treatment is performed to achieve the desired mechanical properties and to remove any residual stresses.

Benefits of butt weld fittings

• The welded connection ensures a stronger and more secure connection.
• The continuous structure of the metal adds to the overall strength of the piping system.
• When butt weld fittings are matched with the appropriate pipe schedules, they provide a seamless flow inside the pipe.
• They offer the flexibility of different turn radii by using Long Radius, Short Radius, or 3R elbows.
• Butt weld fittings are typically more cost-effective compared to socket weld or threaded fittings.
• These fittings are available in Schedule 10, providing a thinner wall option.
• Butt weld fittings are commonly used in Schedule 10 and Schedule 40 configurations.

What should buyers look for bulk purchase of 45 degree elbows
While making bulk purchase of 45 degree elbows, the buyers should always consider certain features for maximum assurance of reliable performance like high pressure, impulse, vibration, vacuum and temperature. Some specifications to look for are as follows:

-Should be convenient to transport and handle

-Should be of high strength

-Resistance should be less

-Corrosion resistance

-These should be no pipe furring

-Sound insulation

-It should be easy to install

-Long lifespan of the elbow

-Economical

-Good finish

-Healthy and non-toxic, bacterial neutral (if possible)

-Resistant to high temperatures

-Reliable installation

-Good heat preservation

-Excellent design ensuring suitability for both exposed and hidden installation etc.