ASME B16.5 Slip On Flange/SO Flange Dimensions

ASME B16.5 Slip On Flange Class 150/300 LBS Dimensions

The calculated strength from a Slip On flange under internal pressure is of the order of two-thirds that of Welding Neck flanges, and their life under fatigue is about one-third that of the latter. The connection with the pipe is done with 2 fillet welds, as well at the outside as also at the inside of the flange.

ASME B16.5 Slip On Flange Class 150 LBS Dimensions
NPS	A	B	I	Holes	C	D	F	G	Weight
1/2″	89	22.4	15.7	4	11.2	15.7	30.2	35.1	0.5
3/4″	99	27.7	15.7	4	12.7	15.7	38.1	42.9	0.7
1″	108	34.5	15.7	4	14.2	17.5	49.3	50.8	0.9
1-1/4″	117	43.2	15.7	4	15.7	20.6	58.7	63.5	1.2
1-1/2″	127	49.5	15.7	4	17.5	22.4	65	73.2	1.24
2″	152	62	19.1	4	19.1	25.4	77.7	91.9	2.2
2-1/2″	178	74.7	19.1	4	22.4	28.4	90.4	104.6	3.2
3″	191	90.7	19.1	4	23.9	30.2	108	127	3.6
3-1/2″	216	103.4	19.1	8	23.9	31.8	122.2	139.7	5
4″	229	116.1	19.1	8	23.9	33.3	134.9	157.2	5.3
5″	254	143.8	22.4	8	23.9	36.6	163.6	185.7	6.6
6″	279	170.7	22.4	8	25.4	39.6	192	215.9	7.5
8″	343	221.5	22.4	8	28.4	44.5	246.1	269.7	12.5
10″	406	276.4	25.4	12	30.2	49.3	304.8	323.9	17.8
12″	483	327.2	25.4	12	31.8	55.6	365.3	381	27
14″	533	359.2	28.4	12	35.1	57.2	400.1	412.8	36
16″	597	410.5	28.4	16	36.6	63.5	457.2	469.9	44
18″	635	461.8	31.8	16	39.6	68.3	505	533.4	49.5
20″	699	513.1	31.8	20	42.9	73.2	558.8	584.2	62
24″	813	616	35.1	20	47.8	82.6	663.4	692.2	89

ASME B16.5 Slip On Flange Class 300 LBS Dimensions
NPS	A	B	I	Holes	C	D	F	G	Weight
1/2″	95	22.4	15.7	4	14.2	22.4	38.1	35.1	0.9
3/4″	117	27.7	19.1	4	15.7	25.4	47.8	42.9	1.3
1″	124	34.5	19.1	4	17.5	26.9	53.8	50.8	1.4
1-1/4″	133	43.2	19.1	4	19.1	26.9	63.5	63.5	1.6
1-1/2″	155	49.5	22.4	4	20.6	30.2	69.9	73.2	2.5
2″	165	62	19.1	8	22.1	33.3	84.1	91.9	3
2-1/2″	191	74.7	22.4	8	25.4	38.1	100.1	104.6	4.3
3″	210	90.7	22.4	8	28.4	42.9	117.3	127	5.8
3-1/2″	229	103.4	22.4	8	30.2	44.5	133.4	139.7	7.5
4″	254	116.1	22.4	8	31.8	47.8	146.1	157.2	9.8
5″	279	143.8	22.4	8	35.1	50.8	177.8	185.7	12.5
6″	318	170.7	22.4	12	36.6	52.6	206.2	215.9	17.5
8″	381	221.5	25.4	12	41.1	62	260.4	269.7	26
10″	445	276.4	28.4	16	47.8	66.5	320.5	323.9	36.5
12″	521	327.2	31.8	16	50.8	73.2	374.7	381	52
14″	584	359.2	31.8	20	53.8	76.2	425.5	412.8	70
16″	648	410.5	35.1	20	57.2	82.6	482.6	469.9	86.2
18″	711	461.8	35.1	24	60.5	88.9	533.4	533.4	108.5
20″	775	513.1	35.1	24	63.5	95.3	587.2	584.2	134
24″	914	616	41.1	24	69.9	106.4	701.5	692.2	201.35

ASME B16.5 Socket Weld Flange Class 400LBS Dimensions

ASME B16.5 Slip On Flange Class 400 LBS Dimensions
NPS	A	B	I	Holes	C	D	F	G	Weight
1/2″	95	22.4	16	4	14.2	22.4	38.1	34.9	0.73
3/4″	117	27.7	19	4	15.7	25.4	47.8	42.9	1.24
1″	124	34.5	19	4	17.5	26.9	53.8	50.8	1.53
1-1/4″	133	43.2	19	4	20.6	28.4	63.5	63.5	2.02
1-1/2″	155	49.5	22	4	22.4	31.8	69.9	73	2.97
2″	165	62	19	8	25.4	36.8	84.1	92.1	3.62
2-1/2″	191	74.7	22	8	28.4	41.1	100.1	104.8	5.29
3″	210	90.7	22	8	31.8	46	117.3	127	7.07
3-1/2″	229	103.4	25	8	35.1	49.3	133.4	139.7	8.92
4″	254	116.1	25	8	35.1	50.8	146.1	157.2	11.16
5″	279	143.8	25	8	38.1	53.8	177.8	185.7	13.85
6″	318	170.7	25	12	41.1	57.2	206.2	215.9	18.35
8″	381	221.5	29	12	47.8	68.3	260.4	269.9	28.65
10″	445	276.4	32	16	55.8	73.2	320.5	323.8	40.14
12″	521	327.2	35	16	57.2	79.2	374.7	381	57.07
14″	584	359.2	35	20	60.5	84.1	425.5	412.8	79.14
16″	648	410.5	39	20	63.5	93.7	482.6	469.9	100.55
18″	710	461.8	39	24	66.5	98	533.4	533.4	120.91
20″	775	513.1	42	24	69.9	101.6	587.2	584.2	146.13
24″	914	616	48	24	76.2	114.3	701.5	692.2	218.59

ASME B16.5 Slip On Flange Class 600 LBS Dimensions
NPS	A	B	I	Holes	C	D	F	G	Weight
1/2″	95	22.4	15.7	4	14.2	22.4	38.1	35.1	0.91
3/4″	117	27.7	19.1	4	15.7	25.4	47.8	42.9	1.35
1″	124	34.5	19.1	4	17.5	26.9	53.8	50.8	1.5
1-1/4″	133	43.2	19.1	4	20.6	28.4	63.5	63.5	2
1-1/2″	155	49.5	22.4	4	22.4	31.8	69.9	73.2	2.8
2″	165	62	19.1	8	25.4	36.6	84.1	91.9	3.4
2-1/2″	191	74.7	22.4	8	28.4	41.1	100.1	104.6	5.2
3″	210	90.7	22.4	8	31.8	46	117.3	127	7
3-1/2″	229	103.4	25.4	8	35.1	49.3	133.4	139.7	8.8
4″	273	116.1	25.4	8	38.1	53.8	152.4	157.2	14
5″	330	143.8	28.4	8	44.5	60.5	189	185.7	24.42
6″	356	170.7	28.4	12	47.8	66.5	222.3	215.9	28.75
8″	419	221.5	31.8	12	55.6	76.2	273.1	269.7	42
10″	508	276.4	35.1	16	63.5	85.9	342.9	323.9	70.2
12″	559	327.2	35.1	20	66.5	91.9	400.1	381	84
14″	603	359.2	38.1	20	69.9	93.7	431.8	412.8	98.6
16″	686	410.5	41.1	20	76.2	106.4	495.3	469.9	141.9
18″	743	461.8	44.5	20	82.6	117.3	546.1	533.4	173.25
20″	813	513.1	44.5	24	88.9	127	609.6	584.2	220.3
24″	940	616	50.8	24	101.6	139.7	717.6	692.2	312.4

ASME B16.5 Slip On Flange Class 900 LBS Dimensions
NPS	A	B	I	Holes	C	D	F	G	Weight
1/2″	121	22.4	23	4	22.4	31.3	38.1	34.9	1.74
3/4″	130	27.7	23	4	25.4	35.1	44.5	42.9	2.31
1″	149	34.5	26	4	28.4	41.1	52.3	50.8	3.38
1-1/4″	159	43.2	26	4	28.4	41.1	63.5	63.5	3.88
1-1/2″	178	49.5	29	4	31.8	44.5	69.9	73	5.38
2″	216	62	26	8	38.1	57.2	104.6	92.1	9.8
2-1/2″	244	74.7	29	8	41.1	63.5	124	104.8	13.53
3″	241	90.7	26	8	38.1	53.8	127	127	11.51
4″	292	116.1	32	8	44.5	69.9	158.8	157.2	19.73
5″	349	143.8	35	8	50.8	79.2	190.5	185.7	31.88
6″	381	170.7	32	12	55.6	85.9	235	215.9	41.12
8″	470	221.5	39	12	63.5	101.6	298.5	269.9	70.47
10″	546	276.4	39	16	69.9	108	368.3	323.8	100.1
12″	610	327.2	39	20	79.2	117.3	419.1	381	132.17
14″	641	359.2	42	20	85.9	130	450.9	412.8	152.41
16″	705	410.5	45	20	88.9	133.4	508	469.9	184.48
18″	787	461.8	51	20	101.6	152.4	565.2	533.4	257.85
20″	857	513.1	54	20	108	158.8	622.3	584.2	316.79
24″	1041	616	67	20	139.7	203.2	749.3	692.2	604.38

ASME B16.5 Slip On Flange Class 1500 LBS Dimensions
NPS	A	B	I	Holes	C	D	F	G	Weight
1/2″	121	22.4	23	4	22.4	31.8	38.1	34.9	1.74
3/4″	130	27.7	23	4	25.4	35.1	44.5	42.9	2.31
1″	149	34.5	26	4	28.4	41.1	52.3	50.8	3.38
1-1/4″	159	43.2	26	4	28.4	41.1	63.5	63.5	3.88
1-1/2″	178	49.5	29	4	31.3	44.5	69.9	73	5.3
2″	216	62	26	8	38.1	57.2	104.6	92.1	9.8
2-1/2″	244	74.7	29	8	41.1	63.5	124	104.3	13.53
3″	267	90.7	32	8	47.3	73.2	133.4	127	17.84
4″	311	116.1	35	8	53.8	90.4	162.1	157.2	27.69
5″	375	143.8	42	8	73.2	104.6	196.9	185.7	51.81
6″	394	170.7	39	12	82.6	119.1	228.6	215.9	60.81
8″	483	221.5	45	12	91.9	142.7	292.1	269.9	102.9
10″	584	276.4	51	12	108	158.8	368.3	323.8	175.11
12″	673	327.2	54	16	124	180.8	450.9	381	263.95
14″	749	359.2	61	16	133.4	–	495.3	412.8
16″	826	410.5	67	16	146.1	–	552.5	469.9
18″	914	461.8	74	16	162.1	–	596.9	533.4
20″	984	513.1	80	16	177.8	–	641.4	584.2
24″	1168	616	93	16	203.2	–	762	692.2

ASME B16.5 Slip On Flange Class 2500 LBS Dimensions
NPS	A	B	I	Holes	C	D	F	G	Weight
1/2″	133	22.4	23	4	30.2	39.6	42.9	34.9	2.91
3/4″	140	27.7	23	4	31.8	42.9	50.8	42.9	3.44
1″	159	34.5	26	4	35.1	47.8	57.2	50.8	4.85
1-1/4″	184	43.2	29	4	38.1	52.3	73.2	63.5	7.11
1-1/2″	203	49.5	32	4	44.5	60.5	79.2	73	10
2″	235	62	29	8	50.8	69.9	95.3	92.1	14.78
2-1/2″	267	74.7	32	8	57.2	79.2	114.3	104.8	21.51
3″	305	90.7	35	8	66.5	91.9	133.4	127	32.56
4″	356	116.1	42	8	76.8	108	165.1	157.2	50.04
5″	419	143.8	48	8	91.5	130	203.2	185.7	82.41
6″	483	170.7	54	8	108	152.4	235	215.9	128.23
8″	552	221.5	54	12	127	177.8	304.8	269.9	187.43
10″	673	276.4	67	12	165.1	228.6	374.7	323.8	354.61
12″	762	327.2	74	12	184.2	254	441.5	381	502.51

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