ASME B16.5 Welding Neck Flange Class 150

Technical Drawing

Dimensions and Weights

Size	D	T	G	t
1/2"	90	9.6	34.9	2.0
3/4"	100	11.2	42.9	2.0
1"	110	12.7	50.8	2.0
1-1/4"	115	14.3	63.5	2.0
1-1/2"	125	15.9	73.0	2.0
2"	150	17.5	92.1	2.0
2-1/2"	180	20.7	104.8	2.0
3"	190	22.3	127.0	2.0
3-1/2"	215	22.3	139.7	2.0
4"	230	22.3	157.2	2.0
5"	255	22.3	185.7	2.0
6"	280	23.9	215.9	2.0
8"	345	27.0	269.9	2.0
10"	405	28.6	323.8	2.0
12"	485	30.2	381.0	2.0
14"	535	33.4	412.8	2.0
16"	595	35.0	469.9	2.0
18"	635	38.1	533.4	2.0
20"	700	41.3	584.2	2.0
22"	750	44.5	641.4	2.0
24"	815	46.1	692.2	2.0

*The dimensions of outside diameter, flange thickness, and raised face of ASME B16.5 Class 150 welding neck flange. D: outside diameter of flange; T: flange thickness; t: height of raised face; G: outside diameter of raised face; all units are mm.

Size	K	n	d	l	L
1/2"	60.3	4	5/8	1/2	55
3/4"	69.9	4	5/8	1/2	65
1"	79.4	4	5/8	1/2	65
1-1/4"	88.9	4	5/8	1/2	70
1-1/2"	98.4	4	5/8	1/2	70
2"	120.7	4	3/4	5/8	85
2-1/2"	139.7	4	3/4	5/8	90
3"	152.4	4	3/4	5/8	90
3-1/2"	177.8	8	3/4	5/8	90
4"	190.5	8	3/4	5/8	90
5"	215.9	8	7/8	3/4	95
6"	241.3	8	7/8	3/4	100
8"	298.5	8	7/8	3/4	110
10"	362.0	12	1	7/8	115
12"	431.8	12	1	7/8	120
14"	476.3	12	1-1/8	1	135
16"	539.8	16	1-1/8	1	135
18"	577.9	16	1-1/4	1-1/8	145
20"	635.0	20	1-1/4	1-1/8	160
22"	692.2	20	1-3/8	1-1/4	170
24"	749.3	20	1-3/8	1-1/4	170

*The bolting dimensions of ASME B16.5 Class 150 welding neck flange. K: diameter of bolt circle; n: number of bolts; d: diameter of bolt holes; l: diameter of bolts; L: length of stud bolts for 2 mm raised face flange; The length of the stud bolt does not include the height of the points. All units are mm except that d and l are provided in inch.

Size	Y	X	A	Ms
1/2"	46	30	21.3	0.48
3/4"	51	38	26.7	0.71
1"	54	49	33.4	1.01
1-1/4"	56	59	42.2	1.33
1-1/2"	60	65	48.3	1.72
2"	62	78	60.3	2.58
2-1/2"	68	90	73.0	4.11
3"	68	108	88.9	4.92
3-1/2"	70	122	101.6	6.08
4"	75	135	114.3	6.84
5"	87	164	141.3	8.56
6"	87	192	168.3	10.6
8"	100	246	219.1	17.6
10"	100	305	273.0	24.0
12"	113	365	323.8	36.5
14"	125	400	355.6	48.4
16"	125	457	406.4	60.6
18"	138	505	457.0	68.3
20"	143	559	508.0	84.5
22"	148	610	558.8	87.4
24"	151	663	610.0	115

*The dimensions of hub and weights for ASME B16.5 Class 150 welding neck flange. Y: length through hub; X: diameter of hub at base; A: diameter of hub at top welding point; Ms: approximate weights/ masses of the flange; Generally, the bore diameter B of flange is equal to A minus two times of nominal wall thickness of adjoining pipe. All dimensions are in mm and the weights are in kg.

ASME B16.5 WN Flanges: Dimensions & Weights
Class150	Class 300	Class 400	Class 600
Class 900	Class 1500	Class 2500	-

*Click to view the dimensions and weights for other pressure ratings.