What is the standard dimensions of a 90 degree pipe elbow?

The size of a 90° standard elbow is usually determined by the diameter of the pipe and the length of the elbow.

Common sizes include the following:

Pipe diameter is 1/2″ (12.7mm), elbow length is 1.5″ (38.1mm).

Pipe diameter is 3/4″ (19.05mm), elbow length is 2.0″ (50.8mm).

Pipe diameter is 1 inch (25.4mm), elbow length is 2.5 inches (63.5mm).

Pipe diameter is 1.5 inches (38.1mm), elbow length is 3.0 inches (76.2mm).

Pipe diameter is 2 inches (50.8mm), elbow length is 3.5 inches (88.9mm).

INCHES	METRIC
N.B.	O.D. at Bevel	A	B	N.B.	O.D. At Bevel	A	B
½	.840	1-½	5/8	15	21.34	38.10	15.88
¾	1.050	1 1/8	7/16	20	26.67	28.58	14.29
1	1.315	1-½	7/8	25	33.40	38.10	22.23
1¼	1.660	1 7/8	1	32	42.16	47.63	25.40
1-½	1.900	2¼	1 1/8	40	48.26	57.15	28.58
2	2.375	3	1-3/8	50	60.33	76.20	34.93
2-½	2.875	3 ¾	1 ¾	65	73.03	95.25	44.45
3	3.500	4-½	2	80	88.90	114.30	50.80
3-½	4.000	5¼	2¼	90	101.60	133.35	57.15
4	4.500	6	2-½	100	114.30	152.40	63.50
5	5.563	7-½	3 1/8	125	141.30	190.50	79.37
6	6.625	9	3 ¾	150	168.28	228.60	95.25
8	8.625	12	5	200	219.08	304.80	127.00
10	10.750	15	6¼	250	273.05	381.00	158.70
12	12.750	18	7-½	300	323.85	457.20	190.50
14	14.000	21	8 ¾	350	355.60	533.40	222.25
16	16.000	24	10	400	406.40	609.60	254.00
18	18.000	27	11¼	450	457.20	685.80	285.75
20	20.000	30	12-½	500	508.00	762.00	317.50
22	22.000	33	13-½	550	558.80	838.20	342.90
24	24.000	36	15	600	609.60	914.40	381.00
26	26.000	39	16	650	660.40	990.60	406.40
28	28.000	42	17¼	700	711.20	1066.80	438.15
30	30.000	45	18-½	750	762.00	1143.00	469.90
32	32.000	48	19 ¾	800	812.80	1219.20	501.65
34	34.000	51	21	850	863.60	1295.40	533.40
36	36.000	54	22¼	900	914.40	1371.60	565.15
38	38.000	57	23 5/8	950	965.20	1447.80	600.08
40	40.000	60	24 7/8	1000	1016.00	1524.00	631.83
42	42.000	63	26	1050	1066.80	1600.20	660.40
44	44.000	66	27-3/8	1100	1117.60	1676.40	695.33
46	46.000	69	28 5/8	1150	1168.40	1752.60	727.08
48	48.000	72	29 7/8	1200	1219.20	1828.80	758.83

45 degree, 60 degree, 90 degree and 180 degree pipe elbow standard sizes

Angle (Degrees)	Center-to-Face Dimension (A)	Outside Diameter (D)	Wall Thickness (T)
45	Standard or custom dimension	Standard or custom	Standard or custom
60	Standard or custom dimension	Standard or custom	Standard or custom
90	Standard or custom dimension	Standard or custom	Standard or custom
180	Standard or custom dimension	Standard or custom	Standard or custom

These dimensions are general and may be subject to variations based on specific standards (e.g., ANSI/ASME, DIN, EN) and material specifications.

Note:

• “Center-to-Face Dimension (A)” represents the distance from the center of the curvature to the end of the elbow.
• “Outside Diameter (D)” is the outside diameter of the pipe.
• “Wall Thickness (T)” is the thickness of the elbow at the bend.