Spectacle blind flange supplier in UAE as per ASME B16.48

Stainless steel spectacle blind flange manufacturer in Dubai

How do you verify the authenticity of the spectacle blind flange supplier?

To verify the authenticity of a flange spectacle flange supplier, you can conduct thorough research on them. But for that, you will have to find a list of spectacle blind flange supplier in UAE, and check their websites, reviews and customer feedback. Once you have shortlisted some, request relevant certifications to ensure their compliance with quality management standards. You can also consider conducting a site audit to assess their manufacturing capabilities and quality control processes. Alternatively, you can visit platforms that list top suppliers of spectacles flange like Schulzmaan. These platforms only list the most reputed and reliable spec blind flange supplier and save a lot of your time and effort.

What are some cost-saving tips when purchasing stainless steel spectacle blind flange?

Compare prices of stainless steel spectacle blind flange from different suppliers and find the best deals.
Try to purchase in bulk as you may benefit from volume discounts.
Explore if there are any alternative grades or specifications that will meet your requirements at a lesser cost.
Negotiate with suppliers to see if there are any available discounts that can help reduce costs.

Purchase carbon steel spectacle blind flange from a Qatar gas approved supplier at an excellent price

What is the purpose of the solid plate and the open ring in a ASME B16.48 spectacle blind flange?

The solid plate acts as a barrier and completely blocks the flow when installed. The open ring in an ASME B16.48 spectacle blind flange allows visual confirmation of the flow status by creating a gap. This configuration is versatile for operations where temporary flow monitoring or isolation is required in a piping system.

You can save 18%-22% cost when ordering spectacles flange, and figure 8 spectacle blind directly from the stockist

Table of content

Specialized in manufacturing

Spectacle Blind Flanges

Spectacle Blind Flange is a pressure-retaining plate with one solid end and one open end connected with a web.

Size

1/2 Inches To 60 Inches

Class

150 To 2500

ASTM

A105, A182, A694

ASME

B16.48

ASME B16.48 Specification

Specifications	Spectacle Blind Flange
Size	1/2” to 60”, DN 12mm to DN 1500mm
Class	Class 150 to Class 2,500, PN 2.5 to PN 250
Equipment	Pushing Machine Press machine electric bevelling machine
Supporting Material For Flanges	Gasket/ Ring Joint/ Flanges Bolts
Certificate	ISO
Methods Of Forging	Casting Forging Rolling Cutting
Testing	Hydrostatic testing machine Magnetic particle detector Direct-reading Spectrograph UI trasonic flaw detector

Spectacle Blind Flange Cost

Description	Price In US ($)
A182 GR.F316L, FLANGE-SPECTACLE BLIND, ASME CLASS 1500 RTJ	US $51.03 Per KG
A182 GR.F51/F60, FLANGE-SPECTACLE BLIND, ASME CLASS 900 RTJ	US $657.33 Per KG
SIZE: 323.90MM,150 FF ASME B16.48, CUNI 90/10, SOLID SPECTACLE BLIND FLANGE, ASTM C70600	US $1164.43 Per KG
SIZE: 267.00MM,150 FF ASME B16.48, CUNI 90/10, SOLID SPECTACLE BLIND FLANGE, ASTM C70600	US $1552.57 Per KG
ASTM C70600, SIZE: 108.00MM,150 FF ASME B16.48, CUNI 90/10, SOLID SPECTACLE BLIND FLANGE	US $174.94 Per KG
ASTM C70600, SIZE: 108.00MM, 150, FF CUNI 90/10, SOLID SPECTACLE BLIND FLANGE, ASME B16.48	US $349.87 Per KG
SA182F316/316L, 25NB, SPECTACLE BLIND, SERRATED FLAT FACE, #300	US $3669.42 Per KG
40NB, SPECTACLE BLIND, FLANGES, SA182F316/316L, SERRATED FLAT FACE, #300, ASME B16.48	US $5889.65 Per KG
20NB, SPECTACLE BLIND, /316L, SERRATED FLAT FACE, #300, ASME B16.48	US $1691.72 Per KG
ASTM B124 C11000 ,RF, ASME B16.48, COPPER, SOLID SPECTACLE BLIND FLANGE, SIZE:60.32MM OD	US $44.41 Per KG
A182 GR.F51/F60, FLANGE-SPECTACLE BLIND, ASME CLASS 1500 RTJ	US $127.15 Per KG
SIZE: 267.00MM,150 FF ASME B16.48, CUNI 90/10, SOLID SPECTACLE BLIND FLANGE, ASTM C70600	US $1552.67 Per KG
CARBON STEEL : DN 650, SPECTACLE BLIND FLANGE #150	US $683.01 Per KG
SPECTACLE-BLIND, 2 Inch, 600LB, RF, A515 GR 70 B16.48	US $151.48 Per KG
SPECTACLE-BLIND, 2 Inch, 150LB, RF, B462 UNS N08020 B16.48	US $405.33 Per KG

Buy paddle blind flange and spectacle blind in piping with leak-proof test reports

Types Of ASME B16.48 Spectacle Flange

Spectacle Blind

Carbon Steel Spectacle Blind Flanges

Stainless Steel Spectacle Blind Flanges

Spectacle Flanges

SA 516 Gr 70 Spectacle Blind Flange

Stainless Steel Spade Blinds

Paddle Blind Flanges

Line Blanks Flanges

Figure-8 Blind Flanges

Paddle Blind Flanges

ASME B16.48 Spectacle Blind Flanges

Spade Blind Flanges

Spectacle Blind Open

Paddle Blind And Spacer

Piping Spectacle Blind

ASTM A105 Spectacle Blind Flanges

SS 316 Spectacle Blind Flanges

A105 Carbon Steel Figure 8 Spectacle Blind

Read more about ASME B16.48 spectacle blind flange dimensions in class 150 to 2500, and the weight of spectacle blank in KG

ASME B16.48 Spectacle Blind Flange Dimensions

Class 150 Spectacle Blind Flange Dimensions

NPS	Class 150
NPS	(A)	(B)	(C)	(D)	(E)	(F)
1/2"	5/8	1-3/4	2-3/8	5/8	1-1/2	1/4
3/4"	13/16	2-1/8	2-3/4	5/8	1-1/2	1/4
1"	1-1/8	2-1/2	3-1/8	9/16	1-1/2	1/4
1-1/4"	1-5/8	2-7/8	3-1/2	9/16	1-1/2	1/4
1-1/2"	1-7/8	3-1/4	3-7/8	9/16	1-1/2	1/4
2"	2-3/8	4	4-3/4	11/16	2	1/4
2-1/2"	2-7/8	4-3/4	5-1/2	11/16	2	1/4
3"	3-1/2	5-1/4	6	11/16	2-1/2	1/4
3-1/2"	4	6-1/4	7	3/4	2-1/2	3/8
4"	4-1/2	6-3/4	7-1/2	3/4	2-1/2	3/8
5"	5-9/16	7-5/8	8-1/2	7/8	3	3/8
6"	6-5/8	8-5/8	9-1/2	7/8	3	1/2
8"	8-5/8	10-7/8	11-3/4	7/8	3	1/2
10"	10-3/4	13-1/4	14-1/4	1	4	5/8
12"	12-3/4	16	17	1	4	3/4
14"	14	17-5/8	18-3/4	1-1/8	4-1/4	3/4
16"	16	20-1/8	21-1/4	1-1/8	4-1/4	7/8
18"	18	21-1/2	22-3/4	1-1/4	4-1/2	1
20"	20	23-3/4	25	1-1/4	4-3/4	1-1/8
24"	24	28-1/8	29-1/2	1-3/8	5-1/2	1-1/4

Class 300 Spectacle Blind Flanges Dimensions

NPS	Class 300
NPS	(A)	(B)	(C)	(D)	(E)	(F)
1/2"	5/8	2	2-5/8	5/8	1-1/2	1/4
3/4"	13/16	2-1/2	3-1/4	3/4	1-1/2	1/4
1"	1-1/8	2-3/4	3-1/2	11/16	1-1/2	1/4
1-1/4"	1-5/8	3-1/8	3-7/8	11/16	1-1/2	1/4
1-1/2"	1-7/8	3-5/8	4-1/2	7/8	2	1/4
2"	2-3/8	4-1/4	5	3/4	2	3/8
2-1/2"	2-7/8	5	5-7/8	7/8	2-1/2	3/8
3"	3-1/2	5-3/4	6-5/8	7/8	2-1/2	3/8
3-1/2"	4	6-3/8	7-1/4	7/8	2-1/2	1/2
4"	4-1/2	7	7-7/8	7/8	2-1/2	1/2
5"	5-5/8	8-3/8	9-1/4	7/8	3	5/8
6"	6-5/8	9-3/4	10-5/8	7/8	3	5/8
8"	8-5/8	12	13	1	3-1/2	7/8
10"	10-3/4	14-1/8	15-1/4	1-1/8	4	1
12"	12-3/4	16-1/2	17-3/4	1-1/4	4	1-1/8
14"	14	19	20-1/4	1-1/4	4-3/4	1-1/4
16"	16	21-1/8	22-1/2	1-3/8	4-7/8	1-1/2
18"	18	23-3/8	24-3/4	1-3/8	4-1/2	1-5/8
20"	20	25-5/8	27	1-3/8	4-3/4	1-3/4
24"	24	30-3/8	32	1-5/8	5-1/2	2

Class 600 Spectacle Blind Flanges Dimensions

NPS	Class 600
NPS	(A)	(B)	(C)	(D)	(E)	(F)
1/2"	5/8	2	2-5/8	5/8	1-1/2	1/4
3/4"	13/16	2-1/2	3-1/4	3/4	1-1/2	1/4
1"	1-1/8	2-3/4	3-1/2	3/4	2-1/4	1/4
1-1/4"	1-7/16	3-1/8	3-7/8	3/4	2-1/4	3/8
1-1/2"	1-11/16	3-5/8	4-1/2	7/8	2-5/8	3/8
2"	2-1/8	4-1/4	5	3/4	2-1/4	3/8
2-1/2"	2-5/8	5	5-7/8	7/8	2-5/8	1/2
3"	3-1/4	5-3/4	6-5/8	7/8	2-5/8	1/2
3-1/2"	3-3/4	6-1/4	7-1/4	1	3	5/8
4"	4-1/4	7-1/2	8-1/2	1	3	5/8
5"	5-1/4	9-3/8	10-1/2	1-1/8	3-3/8	3/4
6"	6-3/8	10-3/8	11-1/2	1-1/8	3-3/8	7/8
8"	8-3/8	12-1/2	13-3/4	1-1/4	3-3/4	1-1/8
10"	10-7/16	15-5/8	17	1-3/8	4-1/8	1-3/8
12"	12-3/8	17-7/8	19-1/4	1-3/8	4-1/8	1-5/8
14"	13-5/8	19-1/4	20-3/4	1-1/2	4-1/2	1-3/4
16"	15-5/8	22-1/8	23-3/4	1-5/8	4-7/8	2
18"	17-5/8	24	25-3/4	1-3/4	5-1/4	2-1/8
20"	19-5/16	26-3/4	28-1/2	1-3/4	5-1/4	2-1/2
24"	23-1/2	31	33	2	6	2-7/8

Class 900 Spectacle Blind Flanges Dimensions

NPS	Class 900
NPS	(A)	(B)	(C)	(D)	(E)	(F)
1/2"	0.625	2.375	3.25	-	1.50	1/4
3/4"	0.0825	2.625	3.50	0.875	1.625	1/4
1"	1.05	3.0	4.0	1.0	2.25	1/4
1-1/4"	1.44	3.375	4.375	1.0	2.25	3/8
1-1/2"	1.68	3.5	4.875	1.125	2.625	3/8
2"	2.16	5.5	6.5	1.0	2.25	1/2
2-1/2"	2.64	6.375	7.5	1.125	2.625	1/2
3"	3.25	6.5	7.5	1.0	2.625	5/8
4"	4.25	8.0	9.25	1.25	3.0	3/4
5"	5.3	9.625	11.0	1.375	3.375	7/8
6"	6.36	11.25	12.5	1.25	3.375	1
8"	8.33	14.0	15.5	1.5	3.75	1-3/8
10"	10.42	17.0	18.5	1.5	4.125	1-5/8
12"	12.39	19.5	21.0	1.5	4.125	1-7/8
14"	13.62	20.375	22.0	1.625	4.5	2-1/8
16"	15.62	22.5	24.25	1.75	4.875	2-3/8
18"	17.62	25.0	27.0	2.0	5.25	2-5/8
20"	19.56	27.375	29.5	2.125	5.25	2-7/8
24"	23.5	32.875	35.5	2.625	6.0	3-1/2

Class 1500 Spectacle Blind Flanges Dimensions

NPS	Class 1500
NPS	(A)	(B)	(C)	(D)	(E)	(F)
1/2"	0.625	2.375	3.25	-	1.50	1/4
3/4"	0.82	2.625	3.50	0.875	1.625	3/8
1"	1.05	3.0	4.0	1.0	2.5	3/8
1-1/4"	1.375	3.375	4.375	1.0	2.5	3/8
1-1/2"	1.61	3.75	4.875	1.125	2.75	1/2
2"	2.07	5.5	6.5	1.0	2.75	1/2
2-1/2"	2.47	6.375	7.5	1.125	3.0	5/8
3"	3.07	6.75	8.0	1.25	3.0	3/4
4"	4.03	8.125	9.5	1.375	3.5	7/8
5"	5.05	9.875	11.5	1.625	3.5	1-1/8
6"	6.06	11.0	12.5	1.5	3.5	1-3/8
8"	7.98	13.75	15.5	1.75	4.0	1-5/8
10"	10.02	17.0	19.0	2.0	4.5	2
12"	11.94	20.375	22.5	2.125	4.5	2-3/8
14"	13.12	22.625	25.0	2.375	5.0	2-5/8
16"	15.0	25.125	27.75	2.625	5.25	3
18"	16.88	27.625	30.5	2.875	5.75	3-3/8
20"	18.81	29.625	32.75	3.125	6.0	3-3/4
24"	22.62	35.375	39.0	3.625	7.0	4-3/8

Class 2500 Spectacle Blind Flanges Dimensions

NPS	Class 2500
NPS	(A)	(B)	(C)	(D)	(E)	(F)
1/2"	0.625	2.625	3.5	-	1.50	3/8
3/4"	0.82	2.875	3.75	0.875	1.625	3/8
1"	1.05	3.25	4.25	1.0	2.5	3/8
1-1/4"	1.38	4.0	5.125	1.125	2.5	1/2
1-1/2"	1.61	4.5	5.75	1.25	2.75	5/8
2"	2.07	5.625	6.75	1.125	2.75	5/8
2-1/2"	2.47	6.5	7.75	1.25	3.0	3/4
3"	3.07	7.625	9.0	1.375	3.0	7/8
4"	4.03	9.125	10.75	1.625	3.5	1-1/8
5"	5.05	10.875	12.75	1.875	3.5	1-3/8
6"	6.06	12.375	14.5	2.125	3.5	2
8"	7.81	15.125	17.25	2.125	4.0	2-1/8
10"	9.75	18.625	21.25	2.625	4.5	2-5/8
12"	11.37	21.5	24.375	2.875	4.5	3-1/8

Spectacle Blind Flange Weight

DN	Normal Pipe Size	Weight As Per Kilogram
15	1/2
20	3/4	0.4
25	1	0.6
40	1 1/2	0.8
50	2	1.7
80	3	4.6
100	4	6.5
150	6	11.9
200	8	30
250	10	58
300	12	101

Spectacle Blind Thickness Calculation

NPS	OD	ID	Center Line	Thickness	Width Of Web
inch	A	B	C	t	W
1/2″	45	16	60	3	38
3/4″	54	21	70	3	38
1″	64	27	80	3	38
1-1/4″	73	42	90	6.4	38
1-1/2″	83	48	100	6.4	38
2″	102	61	120	6.4	51
2-1/2″	107	73	140	6.4	51
3″	133	89	150	6.4	64
3-1/2″	159	102	175	9.7	64
4″	172	114	190	9.7	64
5″	194	141	215	9.7	76
6″	219	168	240	12.7	76
8″	276	219	300	12.7	76
10″	337	273	360	15.7	102
12″	406	324	430	19.1	102
14″	448	356	475	19.1	108
16″	511	406	460	22.4	108
18″	546	457	580	25.4	114
20″	603	508	635	28.4	121
24″	714	610	750	31.8	140

API 590 Spectacle Blind Dimensions

DN	D	B	Q	L	T1	G	T	KG
15	38	17	10	60	4	12	8	0.24
20	48	23	15	60	4	12	8	0.31
25	58	29	15	60	4	12	8	0.4
40	78	43	15	60	4	14	8	0.62
50	88	55	15	60	6	14	8	0.78
80	124	83	30	60	6	18	8	1.35
100	144	108	30	70	6	18	8	1.67
200	254	210	40	70	8	18	12	6.64
300	363	312	40	80	8	22	15	15.77
400	463	393	50	80	10	22	18	31.07
500	568	495	50	80	10	22	22	54.91
600	667	597	50	80	10	27	25	82.84

Face: FF
Size: 10 Inch (DN250)
Standards: API 590
Pressure: 600LB (PN100)
Materials: ASTM A105

Stainless Steel Spectacle Blind Flanges Gasket

Class 150 Blanks Flange For Use With RF Flanges Dimensions

ID B, Normal Pipe Size millimeter	OD, O, millimeter	Centerline Dimension, A, millimeter	Thickness, t, millimeter	Web Width, W, millimeter
1⁄2	45	60	3.0	38
3⁄4	54	70	3.0	38
1	64	80	3.0	38
11⁄4	73	90	6.4	38
11⁄2	83	100	6.4	38
2	102	120	6.4	51
21⁄2	107	140	6.4	51
3 89	133	150	6.4	64
31⁄2	159	175	9.7	64
4	172	190	9.7	64
5	194	215	9.7	76
6	219	240	12.7	76
8	276	300	12.7	76
10	337	360	15.7	102
12	406	430	19.1	102
14	448	475	19.1	108
16	511	460	22.4	108
18	546	580	25.4	114
20	603	635	28.4	121
24	714	750	31.8	140

Figure-8 Blind Flanges Application

applied to permanently separating pipesystems

Spectacle Blind In Open Position
Spectacle Blind In Closed Position

Applicable Line Blanks Dimensional Standards

Dimensional Standards

In this standard Spectacle blinds are available only up to 24 Inches.
For Class 2500 spectacle blinds are upto 12 Inches.
No Class 400 spectacle blinds in this standard.
Facings available are Raised Face, Female Ring Joint and Male ring joint.

What is the role of pressure in the performance of a carbon steel spectacle blind flange?

The carbon steel spectacle blind flange can withstand and contain the pressure within the piping system when the blind plate is in place. This will ensure a reliable and leak proof seal. The pressure rating of the flange determines its maximum working pressure capacity. Selecting the appropriate pressure rating is essential to maintain the integrity and safety of the piping system.

How does the ASME B16.48 standard affect the design of figure 8 blind flange?

The ASME B16.48 standard provides guidelines for the design and dimensions of a figure 8 blind flange. It specifies the requirements for flange sizes, pressure ratings, facing types and materials used. The standard ensures that the flanges meet the necessary standards for compatibility, interchangeability and structural integrity.

Difference between ASME class 150 and ASME class 300 pressure rating in spectacle flanges

The difference between ASME Class 150 and 300 pressure ratings in spectacle flanges is in their maximum working pressure capacities. The higher-pressure rating of Class 300 flanges makes them suitable for higher pressure applications than Class 150 flanges.