Buttweld Fittings Sizes ASME B16.9

BUTTWELD FITTINGS DIMENSIONS ASME B16.9

45/90 Deg. BW Elbow

Dimensions and weights of buttweld 45/90 degree elbows short and long radius (NPS 1/2 to 24, schedule STD/XS) – ASME B16.9

Pipe Elbow Nominal Size	Pipe Elbow Outside Diameter Y	Wall Thickness T (Pipe Elbow Schedule)	45 Deg. Elbow LR Centre to Face B	45 Deg. Elbow LR Weight	90 Deg. Elbow LR Centre to Face A	90 Deg. Elbow LR Weight	90 Deg. Elbow SR Centre to Face A	90 Deg. Elbow SR Weight
mm	in	mm	mm	Schedule	mm	kg	mm	kg	mm	kg
15	1/2”	21.3	2.78	STD	15.9	0.04	38.1	0.08	–	–
			3.73	X.S	15.9	0.05	38.1	0.10	–	–
20	3/4”	26.7	2.87	STD	11.1	0.04	28.6	0.08	–	–
			3.91	X.S	11.1	0.05	28.6	0.11	–	–
25	1”	33.4	3.38	STD	22.2	0.09	38.1	0.15	25.4	0.11
			4.55	X.S	22.2	0.11	38.1	0.19	25.4	0.14
32	11/4”	42.2	3.56	STD	25.4	0.14	47.6	0.28	31.75	0.18
			4.85	X.S	25.4	0.2	47.6	0.39	31.75	0.24
40	11/2”	48.3	3.68	STD	28.6	0.2	57.1	0.4	38.1	0.26
			5.08	X.S	28.6	0.25	57.1	0.5	38.1	0.35
50	2”	60.3	3.91	STD	34.9	0.36	76.2	0.72	50.8	0.5
			5.54	X.S	34.9	0.5	76.2	1.0	50.8	0.68
65	21/2”	73.0	5.16	STD	44.4	0.73	95.2	1.46	63.5	0.95
			7.01	X.S	44.4	0.91	95.2	1.82	63.5	1.27
80	3”	88.9	5.49	STD	50.8	1.1	114.3	2.18	76.2	1.45
			7.62	X.S	50.8	1.45	114.3	2.86	76.2	1.95
100	4”	114.3	6.02	STD	63.5	2.1	152.4	4.2	101.6	2.8
			8.56	X.S	63.5	2.9	152.4	5.7	101.6	3.9
125	5”	141.3	6.65	STD	79.4	3.4	190.0	6.8	127.0	4.8
			9.5	X.S	79.4	5.0	190.0	10.0	127.0	6.5
150	6”	168.3	7.11	STD	95.2	5.1	229.0	10.1	152.4	6.8
			10.97	X.S	95.2	7.7	229.0	15.3	152.4	10.2
200	8”	219.1	8.18	STD	127.0	10.2	305.0	20.4	203.0	13.6
			12.7	X.S	127.0	15.5	305.0	30.9	203.0	20.9
250	10”	273.9	9.27	STD	159.0	18.1	381.0	36.1	254.0	24.1
			12.7	X.S	159.0	24.4	381.0	48.8	254.0	32.5
300	12”	323.9	9.52	STD	190.0	26.6	457.0	53.1	305.0	35.4
			12.7	X.S	190.0	35.0	457.0	70.0	305.0	46.7
350	14”	355.6	9.52	STD	222.0	34.1	533.0	68.1	356.0	45.4
			12.7	X.S	222.0	45.0	533.0	90.0	356.0	60.0
400	16”	406.4	9.52	STD	254.0	45.0	610.0	89.3	406.0	59.5
			12.7	X.S	254.0	59.0	610.0	118.0	406.0	78.7
450	18”	457.0	9.52	STD	286.0	56.5	686.0	113.0	457.0	75.6
			12.7	X.S	286.0	75.0	686.0	150.0	457.0	100.0
500	20”	508.0	9.52	STD	318.0	85.0	762.0	140.0	508.0	93.5
			12.7	X.S	318.0	112.5	762.0	186.0	508.0	124.0
600	24”	610.00	9.52	STD	381.0	101.5	914.0	203.0	610.0	135.0
			12.7	X.S	381.0	134.5	914.0	269.0	610.0	179.0

BW Tee and Caps

Dimensions and weights of buttweld tee and cap (NPS 1/2 to 24, schedule STD/XS) – ASME B16.9

Buttweld Tee and Cap Nominal Size	Pipe Tee and Cap Outside Diameter Y	Pipe Tee and Cap Wall Thickness T	Buttweld Tee Dimensions (C and M)	Buttweld Tee Weight	Buttweld Cap End to End	Buttweld Cap Weight
mm	in	mm	mm	Schedule	mm	mm	mm	kg
15	1/2”	21.3	2.78	STD	25.4	0.58
			3.73	X.S	25.4	0.21
20	3/4”	26.7	2.87	STD	28.6	0.21
			3.91	X.S	28.6	0.27
25	1”	33.4	3.38	STD	38.1	0.34	38.1	0.1
			4.55	X.S	38.1	0.43	38.1	0.14
32	11/4”	42.2	3.56	STD	47.6	0.64	38.1	0.14
			4.85	X.S	47.6	0.75	38.1	0.18
40	11/2”	48.3	3.68	STD	57.1	0.95	38.1	0.18
			5.08	X.S	57.1	1.13	38.1	0.23
50	2”	60.3	3.91	STD	63.5	1.45	38.1	0.27
			5.54	X.S	63.5	1.72	38.1	0.32
65	21/2”	73.0	5.16	STD	76.2	2.45	38.1	0.41
			7.01	X.S	76.2	2.95	38.1	0.45
80	3”	88.9	5.49	STD	85.7	3.45	50.8	0.64
			7.62	X.S	85.7	4.3	50.8	0.82
100	4”	114.3	6.02	STD	105.0	5.7	63.5	1.13
			8.56	X.S	105.0	7.3	63.5	1.54
125	5”	141.3	6.65	STD	124.0	9.1	76.2	1.91
			9.5	X.S	124.0	11.8	76.2	2.59
150	6”	168.3	7.11	STD	143.0	13.6	88.9	2.95
			10.97	X.S	143.0	19.0	88.9	4.1
200	8”	219.1	8.18	STD	178.0	25.0	101.6	5.0
			12.7	X.S	178.0	33.5	101.6	7.3
250	10”	273.0	9.27	STD	216.0	41.0	127.0	9.1
			12.7	X.S	216.0	54.0	127.0	12.0
300	12”	323.9	9.52	STD	254.0	57.0	152.4	13.6
			12.7	X.S	254.0	77.0	152.4	17.0
350	14”	355.6	9.52	STD	279.0	73.0	165.1	15.9
			12.7	X.S	279.0	93.0	165.1	21.0
400	16”	406.4	9.52	STD	305.0	91.0	178.8	20.0
			12.7	X.S	305.0	120.0	178.8	26.0
450	18”	457.0	9.52	STD	343.0	127.0	203.2	26.0
			12.7	X.S	343.0	165.0	203.2	34.0
500	20”	508.0	9.52	STD	381.0	227.0	228.6	33.0
			12.7	X.S	381.0	270.0	228.6	43.0
600	24”	610.0	9.52	STD	432.0	345.0	266.7	46.0
			12.7	X.S	432.0	430.0	266.7	61.0

Concentric/Eccentric Pipe Reducers

Dimensions and weights of buttweld reducers concentric and eccentric (NPS 1/2 to 24, schedule STD/XS) – ASME B16.9

Buttweld Reducer Nominal Size	Pipe Reducer Length H	Pipe Reducer Schedule T	Pipe Reducer Weight
mm	in	mm		Kg
20×15	3/4” x 1/2”	38.1	STD	0.07
			XS	0.1
25×15	1” x 1/2”	50.8	STD	0.14
			X.S	0.18
25×20	1” x 3/4”	50.8	STD	0.14
			X.S	0.18
32×15	11/4” x 1/2”	50.8	STD	0.18
			X.S	0.23
32×20	11/4” x 3/4“	50.8	STD	0.18
			X.S	0.23
32×25	11/4” x 1”	50.8	STD	0.18
			X.S	0.23
40×15	11/2” x 1/2”	63.5	STD	0.27
			X.S	0.32
40×20	11/2” x 3/4”	63.5	STD	0.27
			X.S	0.32
40×25	11/2” x 1”	63.5	STD	0.27
			X.S	0.32
40×32	11/2” x 11/4”	63.5	STD	0.27
			X.S	0.32
50×15	2” x 1/2”	76.2	STD	0.41
			X.S	0.54
50×20	2” x 3/4”	76.2	STD	0.41
			X.S	0.54
50×25	2”x1”	76.2	STD	0.41
			X.S	0.54
50×32	2” x 11/4”	76.2	STD	0.41
			X.S	0.54
50×40	2” x 11/2”	76.2	STD	0.41
			X.S	0.54
65×25	21/2” x 1”	88.9	STD	0.68
			X.S	0.91
65×32	21/2” x 11/4”	88.9	STD	0.68
			X.S	0.91

Buttweld Reducer Nominal Size	Pipe Reducer Length H	Pipe Reducer Schedule T	Pipe Reducer Weight
mm	in	mm		Kg
65×40	21/2” x 11/2”	88.9	STD	0.68
			X.S	0.91
65×50	21/2” x 2”	88.9	STD	0.68
			X.S	0.91
80×40	3” x 11/2”	88.9	STD	0.77
			X.S	1.09
80×50	3”x2”	88.9	STD	0.91
			X.S	1.22
80×65	3” x 21/2”	88.9	STD	0.91
			X.S	1.27
100×40	4” x 11/2”	101.6	STD	1.36
			X.S	1.91
100×50	4”x2”	101.6	STD	1.40
			X.S	1.95
100×65	4” x 21/2”	101.6	STD	1.45
			X.S	2.04
100×80	4”x3”	101.6	STD	1.59
			X.S	2.08
125×80	5”x3”	127.0	STD	2.5
			X.S	3.4
125 x 100	5”x4”	127.0	STD	2.7
			X.S	3.8
150×50	6”x2”	140.0	STD	3.4
			X.S	4.3
150×65	6” x 21/2”	140.0	STD	3.4
			X.S	4.5
150×80	6”x3”	140.0	STD	3.6
			X.S	4.8
150 x 100	6”x4”	140.0	STD	3.7
			X.S	5.2
150 x 125	6”x5”	140.0	STD	3.9
			X.S	5.4

Buttweld Reducer Nominal Size	Pipe Reducer Length H	Pipe Reducer Schedule T	Pipe Reducer Weight
mm	in	mm		Kg
200×80	8”x3”	152.4	STD	4.5
			X.S	7.2
200 x 100	8”x4”	152.4	STD	5.0
			X.S	7.7
200 x 125	8”x5”	152.4	STD	5.4
			X.S	8.2
200 x 150	8”x6”	152.4	STD	5.9
			X.S	8.6
250 x 100	10”x4”	178.0	STD	9.1
			X.S	11.8
250 x 125	10”x5”	178.0	STD	9.5
			X.S	13.6
250 x 150	10”x6”	178.0	STD	9.5
			X.S	13.6
250 x 200	10”x8”	178.0	STD	10.0
			X.S	14.0
300 x 150	12”x6”	203.0	STD	14.1
			X.S	18.1
300 x 200	12”x8”	203.0	STD	14.5
			X.S	19.1
300 x 250	12” x 10”	203.0	STD	15.4
			X.S	20.0
350 x 200	14”x8”	330.0	STD	26.3
			X.S	34.9
350 x 250	14” x 10”	330.0	STD	27.2
			X.S	36.3
350 x 300	14” x 12”	330.0	STD	28.6
			X.S	37.6
400 x 200	16”x8”	356.0	STD	31.8
			X.S	42.6
400 x 250	16” x 10”	356.0	STD	33.1
			X.S	43.5
400 x 300	16” x 12”	356.0	STD	34.5
			X.S	45.4

Buttweld Reducer Nominal Size	Pipe Reducer Length H	Pipe Reducer Schedule T	Pipe Reducer Weight
mm	in	mm		Kg
400 x 350	16” x 14”	356.0	STD	35.4
			X.S	46.3
450 x 250	18” x 10”	381.0	STD	38.0
			X.S	52.1
450 x 300	18” x 12”	381.0	STD	39.0
			X.S	53.5
450 x 350	18” x 14”	381.0	STD	40.0
			X.S	54.9
450 x 400	18” x 16”	381.0	STD	40.8
			X.S	53.5
500 x 250	20” x 10”	508.0	STD	53.0
			X.S	79.9
500 x 300	20” x 12”	508.0	STD	54.4
			X.S	82.0
500 x 350	20” x 14”	508.0	STD	57.6
			X.S	80.2
500 x 400	20” x 16”	508.0	STD	58.9
			X.S	82.0
500 x 450	20” x 18”	508.0	STD	61.7
			X.S	82.0
600 x 300	24” x 12”	508.0	STD	63.5
			X.S	84.4
600 x 350	24” x 14”	508.0	STD	65.3
			X.S	86.8
600 x 400	24” x 16”	508.0	STD	68.0
			X.S	90.4
600 x 450	24” x 18”	508.0	STD	72.6
			X.S	96.5
600 x 500	24” x 20”	508.0	STD	77.1
			X.S	102.5

BUTTWELD FITTINGS TOLERANCE

Buttweld Fittings ASME B16.9 Tolerance (Elbow, Cap, Tee, Reducer)	90 Deg. & 45 Deg. Elbow and Tee	Pipe Reducer & Lap Joint Stub End	Pipe Cap
Buttweld Fitting Dimension (NPS)	Outside Diameter at Bevel	Inside Diameter at End	WallThickness T	Center-to-End Dimension A ,C ,B	Over-all Length H	Over-all Length F
1/2 to 2-1/2	+0.06		Not less than 87.5% of nominal thickness	+/- 0.06	+/- 0.06	+/- 0.12
	-0.03
3 to 3-1/2	+/- 0.06	+/- 0.06	+/- 0.06	+/- 0.06	+/- 0.12
4	+/- 0.06	+/- 0.06	+/- 0.06	+/- 0.06	+/- 0.12
5 to 8	+/- 0.06	+/- 0.06	+/- 0.06	+/- 0.06	+/- 0.25
10 to 18	+0.16	+/- 0.12	+/- 0.09	+/- 0.09	+/- 0.25
	-0.12
20 to 24	+0.25	+/- 0.19	+/- 0.09	+/- 0.09	+/- 0.25
	-0.19
26 to 30	+0.25	+/- 0.19	+/- 0.12	+/- 0.19	+/- 0.38
	-0.19
32 to 48	+0.25	+/- 0.19	+/- 0.19	+/- 0.19	+/- 0.38
	-0.19

Tolerances of butt weld fittings (in inches) according to ASME/ANSI B16.9. for all carbon alloy fittings except short radius elbows and returns (ASME/ANSI B16.28).