Class 150 flange supplier in UAE available in RTJ/ FF/ RF face

Refer ASME B16.5 class 150 forged flanges dimensions in MM

What pressure rating does a Class 150 flange have?

This rating denotes the maximum pressure a flange withstands at a specific temperature. As an established ASME B16.5 Class 150 weld neck flange supplier in UAE, we have high-quality products with a rating of 150 (dimensionless).

The pressure capacity goes down with increasing temperature. For example, a Cl150 flange tolerates 270 PSIG at ambient conditions but 75 PSIG at 800°F.

How does an ASME B16.5 Class 150 weld neck flange differ from other flange classes?

The appropriate class for industrial projects guarantees safety and performance. Class 150 long weld neck flange is available from 1/2 to 24”. B16.47 covers larger flanges (series A and B).

DIN standards usually have tighter tolerances than a Class 150 threaded flange.

Largest manufacturer of ANSI 150 flange in Dubai

Can a Class 150 slip on flange be used for both raised face and flat face applications?

Clients may employ various face types based on application conditions and budgets. A Class 150 flat face flange is simpler to install. It suits low-pressure applications.

In contrast, a raised Class 150 slip on flange is better for more critical roles.

Select your size and schedule in our online inventory of class 150 RF flange material

Table of content

Specialized in manufacturing

Class 150 Flange

Class 150 flange is rated to approximately 270 PSIG at ambient conditions and 180 PSIG at approximately 400°F.

Size

1/2 Inches to 24 Inches

Class

150

ASTM

A182, A105, A350

ASME

B16.5

150# Flange Specifications

Specifications	Class 150 Flange
Schedule	SCH 5S To XXS
Pressure Class	150 To 2500
Methods Of Forging	Casting Forging Rolling Cutting
Use In	Marine & dredging Sanitation Process Instrumentation Oil and Gas Petrochemical/ Refinery/Chemical Power etc.
Equipment	Pushing Machine Press machine electric bevelling machine
Available Packing	Packing In Plywood Box And Plywood Pallet
Testing	Hydrostatic testing machine Magnetic particle detector Direct-reading Spectrograph UI trasonic flaw detector
Class 150 Flange Manufacturer In UAE Size	NPS 1⁄₂" To NPS 48”
Supporting Material For Flanges	Gasket/ Ring Joint/ Flanges Bolts

Class 150 Flange Price

Description	Price In US ($)
Flanges Weld Neck, RF, Class 150, 3/4 Inch Sch 80/XS A105N	US $12.67 Per KG
Flanges Blind, RF, Class 150, 3/4 A105N	US $12.21 Per KG
A182 GR F304/304L, Slip On Flanges, 300 RF, 2 Inch, SCH 80	US $458.08 Per KG
Blind Flanges, CLASS 150 PSI, 3 INCH, SCH 40, RF	US $217.29 Per KG
4 IN, ANSI 150 LB FLANGE END, 8 HOLE,	US $127.66 Per KG
Flanges Weld Neck, RF, Class 150, 2 Inch, Sch80/XS A105N	US $93.91 Per KG
Flanges Weld Neck, RF, Class 150, 3/4 Inch, Sch 80/XS A105N	US $6.34 Per KG
Flanges Weld Neck, RF, Class 150, 4 Inch Sch 40/Std A105N	US $38.50 Per KG
A182 GR F304/304L, Slip On Flanges, 150 RF, 3/4 Inch, SCH 120	US $395.53 Per KG
Blind Flanges, RF, CLASS 150, B16.5, A182 F316/F316L 1/2'	US $30.46 Per KG

The advantage of purchasing 150 LB flange directly from a supplier is the low cost and large selection of flange ASME b16 5 class 150 which save your time

Types Of ASME B16.5 Class 150 Forged Flanges

ANSI 150 Slip On Flanges

Class 150 Blind Flanges

Class 150 Welding Neck Flanges

Class 150 Socket Weld Flanges

Class 150 Plate Flanges

ASME B16.5 Class 150 Lap Joint Flanges

150 LBS Threaded Flanges

ASME 150LB Raised Face Flanges

Class 150 High Hub Blind Flanges

Class 150 Pipe Flanges

Class 150 Stainless Steel Flanges

Class 150 Carbon Steel Flanges

Class 150 Flange Dimensions In Mm

NPS	O.D. of flanges	Minimum WT	Length Of Overall			Number Holes		O.D. of R/F
NPS	O.D. of flanges	Minimum WT	WNRF	SORF & SWRF BLRF	Lapped Joint	Number Holes		O.D. of R/F
	O	Q	Y			Number	Diameter	R
1/2	89	11.2	47.6	15.9	15.9	4	15	35
3/4	117	15.9	57.2	25.4	25.4	4	15	43
1	108	14.3	55.6	17.5	17.5	4	15	51
1.1/4	117	15.9	57.2	20.6	20.6	4	15	64
1.1/2	127	17.5	61.9	22.2	22.2	4	15	73
2	152	19.1	63.5	25.4	25.4	4	19	92
2.1/2	178	22.3	69.8	28.6	28.6	4	19	105
3	190	23.9	69.8	30.2	30.2	4	19	127
3.1/2	216	23.9	71.4	31.8	31.8	8	19	140
4	229	23.9	86.2	33.3	33.3	8	19	157
5	254	23.9	88.9	36.5	36.5	8	22	186
6	279	25.4	88.9	39.7	39.7	8	22	216
8	343	28.6	101.6	44.4	44.4	8	22	270
10	406	30.2	101.6	49.2	49.2	12	25	324
12	483	31.8	114.3	55.6	55.6	12	25	381
14	533	35.0	127.0	57.2	79.4	12	29	413
16	597	36.6	127.0	63.5	87.3	16	29	470
18	635	39.7	139.7	68.3	96.8	16	32	533
20	698	42.9	144.5	73.0	103.2	20	32	584
24	813	47.7	152.4	82.6	111.1	20	35	692

Class 150 Long Weld Neck Flange Dimensions

NPS	O.D. Of (A)	R/F Diameters Of (B)	Wall Thickness Of (C)	Bore Diameters (D)	Hub Diameters at Base (J)	Hub Length (K)	Number of Bolts Holes	Bolts Holes Diameter	B.C. Diameters Of (P)	Weight in (KG)
1/2	3 1/2	1 3/8	7/16	0.50	1 1/4	9	4	5/8	2 3/8	21
3/4	3 7/8	1 11/16	1/2	0.75	1 5/8	9	4	5/8	2 3/4	27
1	4 1/4	2	9/16	1.00	2	9	4	5/8	3 1/8	30
1 1/4	4 5/8	2 1/2	5/8	1.25	2 3/8	9	4	5/8	3 1/2	36
1 1/2	5	2 7/8	11/16	1.50	2 5/8	9	4	5/8	3 7/8	41
2	6	3 5/8	3/4	2.00	3 1/4	9	4	3/4	4 3/4	57
2 1/2	7	4 1/8	7/8	2.50	3 3/4	9	4	3/4	5 1/2	79
3	7 1/2	5	15/16	3.00	4 1/4	9	4	3/4	6	86
3 1/2	8 1/2	5 1/2	15/16	3.50	4 7/8	9	8	3/4	7	110
4	9	6 3/16	15/16	4.00	5 1/2	12	8	3/4	7 1/2	164
5	10	7 5/16	15/16	5.00	6 1/2	12	8	7/8	8 1/2	189
6	11	8 1/2	1	6.00	7 3/4	12	8	7/8	9 1/2	216
8	13 1/2	10 5/8	1 1/8	8.00	9 3/4	12	8	7/8	11 3/4	292
10	16	12 3/4	1 3/16	10.00	12	12	12	1	14 1/4	382
12	19	15	1 1/4	12.00	14 3/8	12	12	1	17	535
14	21	16 1/4	1 3/8	14.00	16	12	12	1 1/8	18 3/4	585
16	23 1/2	18 1/2	1 7/16	16.00	18	12	16	1 1/8	21 1/4	714
18	25	21	1 9/16	18.00	20	12	16	1 1/4	22 3/4	711
20	27 1/2	23	1 11/16	20.00	22	12	20	1 1/4	25	840

ANSI 150 Bleed Or Drip Ring Dimensions

NPS	ID	OD by Pressure
1	28.6	63.5
1.1/2	41.3	82.6
2	54	101.6
2.1/2	63.5	120.7
3	79.4	133.4
4	104.8	171.5
6	155.6	219.1
8	203.2	276.2
10	257.2	336.6
12	304.8	406.4

Dimensions Of Class 150 Spades And Ring Spacers

NPS	OD Of (A)	ID Of (B)	Center-to-End (C)	WT Of(T)	Handle Width (W)
1/2	45	16	126	3	32
3/4	54	21	131	3	32
1	64	27	136	3	32
1.1/4	73	42	145	6.4	32
1.1/2	83	48	145	6.4	32
2	102	61	155	6.4	32
2.1/2	107	73	170	6.4	32
3	133	89	170	6.4	32
3.1/2	159	102	202	9.7	38
4	172	114	202	9.7	38
5	194	141	225	9.7	38
6	219	168	225	12.7	38
8	276	219	267	12.7	38
10	337	273	322	15.7	44
12	406	324	357	19.1	44
14	448	356	378	19.1	44
16	511	406	410	22.4	44
18	546	457	427	25.4	51
20	603	508	455	28.4	51
24	714	610	512	31.8	51

Class 150 Studding Outlet Dimensions

Normal Size	OD of	WT of	Dia. of (R/F)	Dia. Of B.C.	Hole Size	No. Of Bolt Holes	Hole Depth	Tap Size	Threads In Inches T.P.I	Tap Depth	Flat Bottom Weight AS Per Kilogram	-
B	O	T	R	C	U	V	Base	per 1″	-	-	-	-
1/2	3.5	1.25	1.38	2.38	27/64	4	0.88	1/2	13	0.56	3	2.7
3/4	3.88	1.25	1.69	2.75	27/64	4	0.88	1/2	13	0.56	3.7	3.2
1	4.25	1.25	2	3.12	27/64	4	0.88	1/2	13	0.56	4.3	3.8
1 1/4	4.62	1.25	2.5	3.5	27/64	4	0.88	1/2	13	0.56	5.1	4.4
1 1/2	5	1.25	2.88	3.88	27/64	4	0.88	1/2	13	0.56	5.9	5.1
2	6	1.5	3.62	4.75	17/32	4	1.12	5/8	11	0.75	10.2	7.1
2 1/2	7	1.5	4.12	5.5	17/32	4	1.12	5/8	11	0.75	14	9.5
3	7.5	1.5	5	6	17/32	4	1.12	5/8	11	0.75	15	11
3 1/2	8.5	1.5	5.5	7	17/32	8	1.12	5/8	11	0.75	19	13
4	9	1.5	6.19	7.5	17/32	8	1.12	5/8	11	0.75	20	14
5	10	1.75	7.31	8.5	21/32	8	1.31	3/4	10	0.88	28	17
6	11	1.75	8.5	9.5	21/32	8	1.31	3/4	10	0.88	31	19
8	13.5	1.75	10.62	11.75	21/32	8	1.31	3/4	10	0.88	46	26
10	16	1.81	12.75	14.25	49/64	12	1.44	7/8	9	1	58	35
12	19	1.81	15	17	49/64	12	1.44	7/8	9	1	83	48
14	21	2	16.25	18.75	7/8	12	1.56	1	8	1.12	102	55
16	23.5	2	18.5	21.25	7/8	16	1.56	1	8	1.12	123	66
18	25	2.25	21	22.75	1	16	1.81	1 1/8	8	1.25	140	67
20	27.5	2.25	23	25	1	20	1.81	1 1/8	8	1.25	166	79
24	32	2.5	27.25	29.5	1 1/8	20	2.12	1 1/4	8	1.44	231	100

Class 150 Flat Face Flange Dimensions

Normal Size	Diameter		ID	holes No.	Diameter	WT	Diameter of (B.C)	Bolt Holes Diameter	Weight In Kilogram
(DN)	(ISO)	(DIN)	(D5)	(BN)	(D)	(b)	(K)	(d2)	(KG/PCS)
10	–	14	14.5	4	90	16	60	14	0.7
10	17.2	–	17.7	4	90	16	60	14	0.69
15	–	20	21	4	95	16	65	14	0.77
15	21.3	–	22	4	95	16	65	14	0.77
20	–	25	26	4	105	18	75	14	1.06
20	26.9	–	27.6	4	105	18	75	14	1.05
25	–	30	31	4	115	18	85	14	1.27
25	33.7	–	34.4	4	115	18	85	14	1.25
32	–	38	39	4	140	18	100	18	1.86
32	42.4	–	43.1	4	140	18	100	18	1.83
40	–	44.5	45.5	4	150	18	110	18	2.12
40	48.3	–	49	4	150	18	110	18	2.09
50	–	57	58.1	4	165	20	125	18	2.78
50	60.3	–	61.1	4	165	20	125	18	2.74
65	76.1	–	77.1	8	185	22	145	18	3.48
80	88.9	–	90.3	8	200	24	160	18	4.33
100	–	108	109.6	8	235	24	190	22	5.82
100	114.3	–	115.9	8	235	24	190	22	5.61
125	–	133	134.8	8	270	26	220	26	7.91
125	139.7	–	141.6	8	270	26	220	26	7.6
150	–	159	161.1	8	300	28	250	26	10.12
150	168.3	–	170.5	8	300	28	250	26	9.58
175	193.7	–	196.1	12	350	32	295	30	14.45
200	219.1	–	221.8	12	375	34	320	30	16.9
250	–	267	270.2	12	450	38	385	33	27.28
250	273	–	276.2	12	450	38	385	33	26.51
300	323.9	–	327.6	16	515	42	450	33	36.38
350	355.6	–	359.7	16	580	46	510	36	52.83
350	–	368	372.2	16	580	46	510	36	50.24
400	406.4	–	411	16	660	50	585	39	74.71
400	–	419	423.7	16	660	50	585	39	71.44
500	508	–	513.6	20	755	52	670	42	86.87
600	610	–	616.5	20	890	54	795	48	121.84
700	711	–	716	24	995	58	900	48	150.93
800	813	–	818	24	1140	64	1030	56	219.08
900	914	–	920	28	1250	70	1140	56	271.16
1000	1016	–	1022	28	1360	78	1250	56	344.95

ASME B16.5 Class 150 Flange Thickness

Normal Size	OD	Minimum WT (T)	Diameter Of R/F	Bolt Holes No.	Dia. Of Holes	B.C.	Bore Of SORF ID	Bore Of WNRF ID	Dia. Of Hub Base	Hub Top Dia.	Length Of SORF	Length Of WNRF
1⁄2	3.50	0.38	1.38	4	0.62	2.38	0.88	0.62	1.19	0.84	0.56	1.81
3⁄4	3.88	0.44	1.69	4	0.62	2.75	1.09	0.82	1.50	1.05	0.56	2.00
1	4.25	0.50	2.00	4	0.62	3.12	1.36	1.05	1.94	1.32	0.62	2.12
11⁄4	4.62	0.56	2.50	4	0.62	3.50	1.70	1.38	2.31	1.66	0.75	2.19
11⁄2	5.00	0.62	2.88	4	0.62	3.88	1.95	1.61	2.56	1.90	0.81	2.38
2	6.00	0.69	3.62	4	0.75	4.75	2.44	2.07	3.06	2.38	0.94	2.44
21⁄2	7.00	0.81	4.12	4	0.75	5.50	2.94	2.47	3.56	2.88	1.06	2.69
3	7.50	0.88	5.00	4	0.75	6.00	3.57	3.07	4.25	3.50	1.12	2.69
31⁄2	8.50	0.88	5.50	8	0.75	7.00	4.07	3.55	4.81	4.00	1.19	2.75
4	9.00	0.88	6.19	8	0.75	7.50	4.57	4.03	5.31	4.50	1.25	2.94
5	10.00	0.88	7.31	8	0.88	8.50	5.66	5.05	6.44	5.56	1.38	3.44
6	11.00	0.94	8.50	8	0.88	9.50	6.72	6.07	7.56	6.63	1.50	3.44
8	13.50	1.06	10.62	8	0.88	11.75	8.72	7.98	9.69	8.63	1.69	3.94
10	16.00	1.12	12.75	12	1.00	14.25	10.88	10.02	12.00	10.75	1.88	3.94
12	19.00	1.19	15.00	12	1.00	17.00	12.88	12.00	14.38	12.75	2.12	4.44
14	21.00	1.31	16.25	12	1.12	18.75	14.14	13.25	15.75	14.00	2.19	4.94
16	23.50	1.38	18.50	16	1.12	21.25	16.16	15.25	18.00	16.00	2.44	4.94
18	25.00	1.50	21.00	16	1.25	22.75	18.18	17.25	19.88	18.00	2.62	5.44
20	27.50	1.62	23.00	20	1.25	25.00	20.20	19.25	22.00	20.00	2.81	5.62
22	29.50	1.75	25.25	20	1.38	27.25	22.22	21.25	24.25	22.00	3.07	5.82
24	32.00	1.81	27.25	20	1.38	29.50	24.25	-	-	-	-	-

Bolt Size Chart For Class 150 Flange

Size in (Inches)	Size in (Millimeter)	Bolts Number	Bolts Size In UNC	Stud Length (RF)	Stud Size In ISO	Machine Bolts Length
1/2	15	4	1/2	55	M14	50
3/4	20	4	1/2	65	M14	50
1	25	4	1/2	65	M14	55
1 1/4	32	4	1/2	70	M14	55
1 1/2	40	4	1/2	70	M14	65
2	50	4	5/8	85	M16	70
2 1/2	65	4	5/8	90	M16	75
3	80	4	5/8	90	M16	75
3 1/2	90	8	5/8	90	M16	75
4	100	8	5/8	90	M16	75
5	125	8	3/4	95	M20	85
6	150	8	3/4	100	M20	85
8	200	8	3/4	110	M20	90
10	250	12	7/8	115	M24	100
12	300	12	7/8	120	M24	100
14	350	12	1	135	M27	115
16	400	16	1	135	M27	115
18	450	16	1 1/8	145	M30	125
20	500	20	1 1/8	160	M30	140
24	600	20	1 1/4	170	M33	150

Number Of Bolt Holes In 150LB Flange

NPS (in inch)	Class 150 Flanges
NPS (in inch)	Diameter ( in Inches)	Number of Bolts	Diameter of Bolts (in Inches)	Diameter of Bolts Holes (in Inches)	(B.C.) (in Inches)
1/4	3-3/8	4	1/2	0.62	2-1/4
1/2	3-1/2	4	1/2	0.62	2-3/8
3/4	3-7/8	4	1/2	0.62	2-3/4
1	4-1/4	4	1/2	0.62	3-1/8
1-1/4	4-5/8	4	1/2	0.62	3-1/2
1-1/2	5	4	1/2	0.62	3-7/8
2	6	4	5/8	0.75	4-3/4
2-1/2	7	4	5/8	0.75	5-1/2
3	7-1/2	4	5/8	0.75	6
3-1/2	8-1/2	8	5/8	0.75	7
4	9	8	5/8	0.75	7-1/2
5	10	8	3/4	0.88	8-1/2
6	11	8	3/4	0.88	9-1/2
8	13-1/2	8	3/4	0.88	11-3/4
10	16	12	7/8	1	14-1/4
12	19	12	7/8	1	17
14	21	12	1	1.12	18-3/4
16	23-1/2	16	1	1.12	21-1/4
18	25	16	1-1/8	1.25	22-3/4
20	27-1/2	20	1-1/8	1.25	25
24	32	20	1-1/4	1.38	29-1/2

Read more about ASME B16.5 class 150 forged flanges weight/ pressure rating/ thickness/ bolt size

Class 150 Flange Weight Chart

Normal Size In Inch	Normal Size In MM	OD In (MM)	WT Of (D) In MM)	SORF SWRF	WNRF	BLRF
1/2	15	88.9	11.2	0.4	0.5	0.4
3/4	20	98.6	12.7	0.6	0.7	0.6
1	25	108	14.2	0.8	1	0.9
1 1/4	32	117.3	15.7	1	1.3	1.2
1 1/2	40	127	17.5	1.3	1.7	1.5
2	50	152.4	19.1	2.1	2.6	2.4
2 1/2	65	177.8	22.4	3.3	4.1	3.9
3	80	190.5	23.9	3.9	4.9	4.9
3 1/2	90	215.9	23.9	4.8	6.1	6.2
4	100	228.6	23.9	5.3	6.8	7.0
5	125	254	23.9	6.1	8.6	8.6
6	150	279.4	25.4	7.5	10.6	11.3
8	200	342.9	28.4	12.1	17.6	19.6
10	250	406.4	30.2	16.5	24	28.6
12	300	482.6	31.8	26.2	36.5	43.2
14	350	533.4	35.1	34.6	48.4	58.1
16	400	596.9	36.6	44.8	60.6	76.1
18	450	635	39.6	48.9	68.3	93.7
20	500	698.5	42.9	61.9	84.5	122.0

Class 150 Flange Pressure Rating

Temperature (in F°)	150#
100	285
200	260
300	230
400	200
500	170
600	140
650	125
700	110
750	95
800	80
850	65
900	50
950	35
1000	20
Hydrostatic Test (psig)	450

Class 150 Flange Gasket Dimensions

Normal Pipe Size In Inch	(I.D.) Gasket	(O.D.) Gasket
Class 150
1/2	0.84	1.875
3/4	1.06	2.25
1	1.31	2.625
1 1/4	1.66	3
1 1/2	1.91	3.375
2	2.38	4.125
2 1/2	2.88	4.875
3	3.50	5.375
4	4.50	6.875
5	5.56	7.75
6	6.62	8.75
8	8.62	11
10	10.75	13.375

ANSI 150# Flange Torque Specs

NPS Size Inch	NPS Size MM	(Max.) Radial Projection
NPS Size Inch	NPS Size MM	No Deeper Than the Bottom In (MM)	Deeper Than the Bottom In (MM)
1/2	15	3.0	1.5
3/4	20	3.0	1.5
1	25	3.0	1.5
1 1/4	32	3.0	1.5
1 1/2	40	3.0	1.5
2	50	3.0	1.5
2 1/2	65	3.0	1.5
3	80	4.5	1.5
3 1/2	90	6.0	3.0
4	100	6.0	3.0
5	125	6.0	3.0
6	150	6.0	3.0
8	200	8.0	4.5
10	250	8.0	4.5
12	300	8.0	4.5
14	350	8.0	4.5
16	400	10.0	4.5
18	450	12.0	6.0

What factors affect the cost of Class 150 forged flanges besides size and wall thickness?

Buyers should select these flanges per the environmental pressure and temperature (ambient and operating fluid). The costs of Class 150 forged flanges depend on the material grade and the sizing (non-standard may cost more). Additional treatments like polishing and sandblasting inflate prices of a 150# flange.

We can offer factory rates since we maintain a collection of non-standard sizes and have experts for integrated quality control. Note that higher pressure classes than a 150 lb flange increase the outside diameter, bolt circle diameter, and bolt hole number.

What are the advantages of using a Class 150 blind flange over other classes?

If materials like stainless steel are selected, these flanges deliver trustable performance and corrosion resistance. A Class 150 blind flange has a uniform distribution of bolt holes and a smooth surface finish. They are also easy to install and adapt to versatile sectors like petrochemicals and desalination.

What are the benefits of gaskets in 150 LB flange connections?

In a 150# socket weld flange, the core advantage of a gasket is a secure, leak-tight seal as compression changes.

A gasket minimises noise, vibration, etc., and prolongs the lifespan of a Class 150 weld neck flange.