Spectacle Blind Flange manufacturer |ASME B16.48 Figure 8 Spade Blinds

Stainless Steel Spade Blinds and ASTM A105 Figure 8 Spectacle Blind manufacturer in India

Table Of Content:

Spectacle Blind Specification
Spectacle Blind Price List
Spectacle Blinds Isometric Symbol
ASME 16.48 Spectacle Blind Flange Dimensions
Spectacle Blind Uses And Applications
Spectacle Blind Weight In Kg
Types Of Blinds In Piping
API 590 Spectacle Blind Dimensions
30 Inch Spectacle Blind Weight
Stainless Steel Spectacle Blind Gasket
Paddle Blind Flange Dimensions
Stainless Steel Spectacle Blind Flange Hs Code
Spectacle Blind Flange Asme B16.48 Manufacturing Process
Class 150 Spectacle Blind Flange Dimensions
Blind Flange Dimensions Class 300
Class 600 Spectacle Blind Flange Dimensions
Class 900 Spectacle Blind Flange Dimensions In mm
1500# Spectacle Blind Dimensions
Class 2500 Spectacle Blind Flange Dimensions
ASME B16.48 Facing Types
Figure 8 Spectacle Blind Marking Method
Blank Flange vs. Blind Flange
Stainless Steel Spectacle Blind Flange Purpose
Spectacle Blind Flangespectacle Blind Flange Pressure Rating

Spectacle Blind Specification

Manufacturing Size Range :

1/2 inch to 60

Manufacturing Technique :

Cast
Forged
Plate

Buying Tips :

Size
Length
O.D.
Pressure Rating

Manufacturing Process :

Plate
Casting
CNC machined

Type :

Spec Blind Flange
Spectacle Blank
8 Blind Flange

Bolts Hole :

4 To 24

Common Thickness :

SCH 10/ 20/ 40
SCH 60/ 80/ 100
SCH 120/ 140
SCH 160/ 180

Pressure :

Class 125, 150
Class 300, 400
Class 600, 900
Class 1500, 2500

ASME Standard :

ASME B16.48

Process :

Material selection & cutting
Shaping
Heat treatment & forming
Forging & machining
Surface finish

sealing face finish :

Ra 3.2µm-6.3µm
Spiral Finish

Resistance :

Nitric Acid
Sulfuric Acidr
Hydrochloric Acid
Alkalies and Salts
Phosphoric Acid
Organic Acid
Seawater

Coating :

Oil Black Paint
Anti-rust Paint
Zinc Plated
Yellow Transparent

Surface Treatment Type :

Mirror finish
Cold water finish
Concentric serrated
Stock finish
Serrated & smooth finish
Spiral serrated

Uses :

Power generation plant
Petrochemical plants
Petrochemicals industry
Oil & gas plants
Nuclear energy sector
Sea water exchanger

Types Of Packaging :

Carton box
Plastic bag
Wooden case
Or custom as required

Logistics Way :

By Air
By Sea
Saudi Arabia = 7 to 8 day
UAE = 6 to 7 day
Oman = 5 to 6 days

Services :

Drilling/ Electroplating
Threading/ Forging
Cutting/ Minor Fabrication
CNC machined/ Casting
Sand Blasting/ Rolling

Types Of Connection :

Threaded
Welding

Available Material:

Carbon steel
Nickel alloy
Titanium
Copper nickel
Alloy steel
Stainless steel

Testing :

Impact test
Material inspection
Hardness test
Tensile test
Visual inspection
PMI test

For More Information Please Contact US

Spectacle Blind Price List

Type = Spectacle Blind Flange
Grade = ASTM A105 A105

Size In Inch	SCH	Class	Price In US$ (Dollar) per unit	Price In Dirham (AED) per unit
4	40	150	US$8.08	29.68
6	40	150	US$10.77	39.56
8	40	150	US$15.03	55.20
10	40	150	US$18.74	68.83
12	80	300	US$26.75	98.25
14	80	300	US$35.81	131.53
16	80	300	US$44.07	161.87
18	80	300	US$51.87	190.52
20	80	300	US$80.84	296.92

Spectacle Blinds Isometric Symbol

Type	Symbol	Image
Spectacle Blind Flange

Carbon Steel Paddle Blind Flanges and 316 Stainless Steel Slip Blind export with Visual, dimensional, thickness control

ASME 16.48 Spectacle Blind Flange Dimensions

Size in Inch	Size in MM	Inner Diameter	Outer Diameter (O.D.)	Center-Center	Wall Thickness	Web Thickness	Width Of Web	Hole Diameter	Paddle Blank Weight in (KG)	Paddle Spacer Blank Weight (Kg)	Spectacle Blind Weight in (KG)
1/2	15	16	45	60	3	2	38	15.875	0.03	0.03	0.07
3/4	20	21	54	70	3	2	38	15.875	0.05	0.04	0.1
1	25	27	64	80	3	2	38	15.875	0.07	0.06	0.14
1 1/4	32	42	73	90	6.4	4	38	15.875	0.21	0.14	0.35
1 1/2	40	48	83	100	6.4	4	38	15.875	0.27	0.18	0.46
2	50	61	102	120	6.4	4	51	19.05	0.41	0.26	0.68
2 1/2	65	73	107	140	6.4	4	51	19.05	0.46	0.24	0.7
3	80	89	133	150	6.4	4	64	19.05	0.71	0.39	1.1
3 1/2	90	102	159	175	9.7	5	64	19.05	1.54	0.9	2.44
4	100	114	172	190	9.7	5	64	19.05	1.8	1.01	2.81
5	130	141	194	215	9.7	5	76	22.225	2.29	1.08	3.37
6	150	168	219	240	12.7	7	76	22.225	3.82	1.57	5.39
8	200	219	276	300	12.7	10	76	22.225	6.07	2.25	8.32
10	250	273	337	360	15.7	12	102	25.4	11.19	3.84	15.04
12	300	324	406	430	19.1	15	102	25.4	19.77	7.18	26.95
14	350	356	448	475	19.1	15	108	28.575	24.07	8.87	32.94
16	400	406	511	540	22.4	17	108	28.575	36.73	13.54	50.27
18	450	457	546	580	25.4	20	114	31.75	47.55	14.23	61.79
20	500	508	603	635	28.4	22	121	31.75	64.85	18.82	83.67
24	600	610	714	750	31.8	24	140	34.925	101.8	27.49	129.3

Spectacle Blind Uses And Applications

Specialty Chemicals
Power Generation
Condensers
Chemical Equipment
Gas Processing
Pulp and Paper Industry

Sea Water Equipment
Pharmaceutical Equipment
Off-Shore Oil Drilling Companies
Petrochemicals
Heat Exchangers
Pharmaceuticals

Spectacle Blind Weight In Kg

DN	NPS	Weight In KG
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

Check Alloy Steel Spectacle Blind purpose and dimensions of ASTM A182 F11 Spade Blind Flange and 316 SS Spectacle Blank with sealing face

Types Of Blinds In Piping

Stainless Steel Spectacle Blind Flanges

Carbon Steel Spectacle Blind Flanges

Spectacle Blind

Spectacle Flange

Spectacle Blinds

Pn16 Spectacle Blind Flanges

Stainless Steel Spade Blinds

Carbon Steel Paddle Blind Flanges

Duplex Spec Blinds

Super Duplex Spade Blind Flanges

Titanium Slip Blind Flanges

Mild Steel Spectacle Blank

Nickel Alloy Figure 8 Blind Flanges

Copper Spectacle Blind Open

Inconel Paddle Blind And Spacer

Ductile Iron Spectacles For Blind

Gi Spectacle Blind And Spacer

Aluminum Slip Blind Plate

Alloy Steel Piping Spectacle Blind

ASTM A105 Spectacle Blind Figure 8

A350 LF2 Spade Spacer Spectacle Blind

SS 304 Pipe Skillet Blind

316 SS Vented Blind Flanges

UNS S31803 Spade Line Blinds

A182 Gr F316 Spectacle Blind

ASTM A105 Figure 8 Spectacle Blind

316 Stainless Steel Slip Blind

API 590 Spectacle Blind Dimensions

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

DN	(D)	(B)	(Q)	(L)	(T1)	(G)	(T)	(Kilogram)
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

30 Inch Spectacle Blind Weight

Normal Size								Weights
	A	B	C	D	E	F	G		2	3,4
1	2 1/2	1.05	3 1/8	1/4	4	1 1/2	…….	1	1	1
1 1/2	3 1/4	1.9	3 7/8	1/4	4	1 1/2	……..	1	1	1
2	4	2.38	4 3/4	1/4	4	2	……..	2	1	2
2 1/2	4 3/4	2.88	5 1/2	1/4	4	2	……..	2	2	3
3	5 1/4	3.5	6	1/4	4	2 1/2	……..	2	2	3
4	6 3/4	4.5	7 1/2	3/8	4	2 1/2	……..	3	2	5
6	8 5/8	6.62	9 1/2	1/2	4	3	……..	7	4	10
8	10 7/8	8.62	11 3/4	1/2	4	3	…….	14	7	20
10	13 1/4	10.75	14 1/4	5/8	5	4	………	26	12	35
12	16	12.75	17	3/4	5	4	……..	45	21	62
14	17 1/2	14	18 3/4	3/4	5	4 1/4	……..	53	24	74
16	20	16	21 1/4	7/8	5	4 1/4	1 1/2	92	40	127
18	21 3/8	18	22 3/4	1	5	4 1/2	1 1/2	105	39	139
20	23 5/8	20	25	1 1/8	5	4 3/4	1 1/2	145	50	188
24	28	24	29 1/2	1 1/4	5	5 1/2	1 1/2	245	80	315
30	34 1/2	30	36	1 5/8	5	5 1/2	1 1/2	437	128	555
36	41	36	42 3/4	2	6	5 1/2	1 3/4	757	203	945

Stainless Steel Spectacle Blind Gasket

ASBS	A11BS	A13BS

Paddle Blind Flange Dimensions

SIZE	OD	Thickness	Weight
1/2	1-3/4	1/4	1
3/4	2-1/8	1/4	1
1	2-1/2	1/4	1
1-1/4	2-7/8	1/4	1
1-1/2	3-1/4	1/4	1
2	4	1/4	2
2-1/2	4-3/4	1/4	2
3	5-1/4	1/4	2
3-1/2	6-1/4	3/8	4
4	6-3/4	3/8	5
5	7-5/8	3/8	6
6	8-5/8	1/2	10
8	10-7/8	1/2	15
10	13-1/4	5/8	26
12	16	3/4	47
14	17-5/8	3/4	56
16	20-1/8	7/8	84

Stainless Steel Spectacle Blind Flange Hs Code

HS Code	Description
73072100	SPECTACLE BLIND RTJ 2 CLASS 600# ASTM A240 UNS S31254

Spectacle Blind Flange ASME B16.48 Manufacturing Process

Raw Material

Raw Materia
Materia Dimension And Visual
Materia Quantity

Inspection

Chemical And Mechanical Analysis
Analysis Of Preservation Certificate

Cutting

Cut Surface
Marking
Weight Measuring

Forging Flanges

Grade Of Material
Control Flanges Temperature

Heat Treatment

Flanges Solution Treatment
Flanges Mechanical Test
Normalizing

Forging Rolling Of Flanges

Check Dimension
Check Marking
Check Weight

Final Inspection Of Pipe Flanges

Test Of Visual
Test Of Nondestructive

Rust Prevention

View Preserve
Marking
Heat Number

Packaging

Specification Of Packing
Inspection Of Packing
Delivery Time And Day

Class 150 Spectacle Blind Flange Dimensions

Normal Pipe Size	Class 150 FLANGES
Normal Pipe Size	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

Blind Flange Dimensions Class 300

Normal Pipe Size	Class 300 FLANGES
Normal Pipe Size	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 Flange Dimensions

Normal Pipe Size	Class 600 FLANGES
Normal Pipe Size	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 Flange Dimensions In mm

Normal Pipe Size	Class 900 FLANGES
Normal Pipe Size	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

1500# Spectacle Blind Dimensions

Normal Pipe Size	Class 1500 FLANGES
Normal Pipe Size	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 Flange Dimensions

Normal Pipe Size	Class 2500 FLANGES
Normal Pipe Size	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

ASME B16.48 Facing Types

Flat Face
Raised Face
Lap Joint
Ring Joint
Male And Female
Tongue And Groove

Vishal Steel offer best price of Flat Face FF and Raised Face A182 Gr F316 Figure 8 Blind Flange, Duplex UNS S31803 Paddle Blind and Spacer material in India

Figure 8 Spectacle Blind Marking Method

The marking shall be applied by steel stamping or other marking device that leaves a legible imprint. When marking on the blind portion of the blanks, low stress marking shall be used and shall not impinge on the gasket seating surface.

Blank Flange Vs. Blind Flange

Blank flange : are used to seal the end of a pipe line or fittings.

Blind flange : is basically a flange that does not have a hub or a bored center.

Stainless Steel Spectacle Blind Flange Purpose

Spectacle Blinds are simple safety devices that are installed between two pipe flanges
open end is installed as a spacer to allow uninterrupted flow.
stop the flow in the pipeline, the blind end is rotated into place between the flanges

Spectacle Blind Flangespectacle Blind Flange Pressure Rating

Service Temp (°F)	150	300
Service Temp (°F)	Carbon Steel	Carbon Steel
100	285	740
200	260	675
300	230	655
400	200	635
500	170	600
600	140	550
650	125	535
700	100	BS 535
750	95	505
800	80	410
850	65	270
900	50	170
950	35	105
1000	20	50