Long & Short Radius 180 Degree Elbow Manufacturer, ASME B16.9 180° Elbow

Short & Long Radius 180 Degree Elbow Fittings: ASME/ANSI B16.9, B16.28, MSS-SP-43

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BW 180° Elbow Specifications

Dimensions:
ASME/ANSI B16.9, ASME B16.28, MSS-SP-43.
Size:
1/2"NB TO 48"NB IN.
Type:
Seamless and Welded.
Thickness:
Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS.
Form:
180 Degree Elbow, 180° Long Radius Elbow -LR Elbow, 180° Short Radius Elbow -SR Elbow
Materials:
Stainless Steel, Carbon Steel, Alloy Steel, Super Duplex, Duplex Steel, High Nickel Alloys, Copper Nickel.

ISO Certified manufacturer of Top Quality Buttweld 180Degree Elbow in size range 1/2″ to 48″ inch and Thickness in Sch 5S to XXS.

A Buttweld 180-degree elbow is a crucial component in the piping systems used across various industries, including oil and gas, petrochemical, and power generation. This type of elbow is designed to facilitate a complete change in the flow direction, allowing the pipeline to execute a 180-degree turn. These elbows manufactured by us ensures a strong and leak-proof connection when welded to the adjoining pipes, providing structural integrity and resistance to high pressure and temperature conditions.

The Buttweld 180-degree elbow is typically fabricated from high-grade materials such as stainless steel, carbon steel, alloy steel, or high nickel alloys, chosen based on the specific requirements of the application. These materials offer excellent corrosion resistance, mechanical strength, and durability. The elbows are manufactured according to standards like ASME B16.9, MSS, DIN, EN, JIS, BSI, ensuring uniformity in dimensions, wall thickness, and tolerances. The design includes a smooth inner surface to minimize friction losses and turbulence, which is critical in maintaining efficient flow within the pipeline.

This type of elbow is often used in applications where space constraints necessitate a sharp turn, or in heat exchanger tubing where return bends are common. The installation of a Buttweld 180-degree elbow involves precise welding techniques to ensure a seamless and robust joint. Proper alignment and welding practices are essential to prevent any potential weak points that could lead to leaks or failures under high stress. The buttweld connection, once completed, becomes as strong as the adjoining pipes, offering a reliable solution for complex piping configurations.

Regular maintenance and inspection of Buttweld 180-degree elbows are crucial to ensure the longevity and safety of the piping system. Inspection techniques such as radiographic testing, ultrasonic testing, and hydrostatic testing are employed to detect any defects or degradation in the weld joints and material. Proper maintenance practices, including periodic cleaning and protective coatings, can significantly extend the service life of these elbows, ensuring continuous and efficient operation of the pipeline.

ASME B16.9 180 Degree Elbow Dimensions

ASME B16.9 180 Degree Elbow LR/SR Dimensions

NPS	O.D. D	180° LR		180° SR
NPS	O.D. D	Center to Center O	Back to Face K	Center to Center O	Back to Face K
1/2	21.3	76	48
3/4	26.7	76	51
1	33.4	76	56	51	41
1.1/4	42.2	95	70	64	52
1.1/2	48.3	114	83	76	62
2	60.3	152	106	102	81
2.1/2	73	190	132	127	100
3	88.9	229	159	152	121
3.1/2	101.6	267	184	178	140
4	114.3	305	210	203	159
5	141.3	381	262	254	197
6	168.3	457	313	305	237
8	219.1	610	414	406	313
10	273	762	518	508	391
12	323.8	914	619	610	467
14	355.6	1067	711	711	533
16	406.4	1219	813	813	610
18	457	1372	914	914	686
20	508	1524	1016	1016	762
22	559	1676	1118	1118	838
24	610	1829	1219	1219	914

Note: Wall thickness (t) must be specified by customer. Dimensions are in millimeters unless otherwise indicated.

Dimensional Tolerances of ASME B16.9 180deg Elbow LR & SR

Nominal Pipe Size	1/2 to 2.1/2	3 to 3.1/2	4
Outside Diameter at Bevel (D)	+ 1.6 - 0.8	1.6	1.6
Inside Diameter at End	0.8	1.6	1.6
Center to Center (O)	6	6	6
Back to Face (K)	6	6	6
Nominal Pipe Size	5 to 8	10 to 18	20 to 24
Outside Diameter at Bevel (D)	+ 2.4 - 1.6	+ 4 - 3.2	+ 6.4 - 4.8
Inside Diameter at End	1.6	3.2	4.8
Center to Center (O)	6	10	10
Back to Face (K)	6	6	6
Wall Thickness (t)	Not less than 87.5% of Nominal Wall Thickness

A 180-degree elbow is a pipe fitting that makes a full U-turn in flow direction. It comes in two types:

Long Radius (LR): Radius is 1.5 times the pipe diameter—provides smoother flow with less pressure drop.

Short Radius (SR): Radius equals the pipe diameter—used in tight spaces but causes more flow resistance.

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