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:

Class 600 Spectacle Blind Flange Dimensions
Class 900 Spectacle Blind Flange Dimensions
Class 1500 Spectacle Blind Flange Dimensions
Class 2500 Spectacle Blind Flange Dimensions
ASME B16.48 Facing Types
Figure 8 Spectacle Blind Marking Method
Dimensions of Class 150 Blanks for Use With Raised Face Flanges
Dimensions of Class 150 Female Ring-Joint Facing Figure-8 Blanks
Dimensions of Class 150 Male Ring-Joint Facing Figure-8 Blanks
Blank Flange vs. Blind Flange
Spectacle Blind Flange Purpose

Spectacle Blind Specification

Specification	Spectacle Blind Flange
Spectacle Blind Flange Uses	Spectacle Blinds are simple safety devices that are installed between two pipe flanges.
Size Chart	1/2 Inch to 36 Inch, (Customized Up to 48")
Thickness	Sch 10S To SCH 180
Supporting Material	Gasket/ Ring Joint/ Flange Bolts
Test Certificates	EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc
Production Technique	Forged/ Heat treated and machined
Manufacturer of	Forged/ Threaded/ Screwed / Plate
Manufacturer Pressure Class	Class 150 (lb) up to 24" Class 300 (lb) up to 20" Class 600 (lb) up to 20" Class 900 (lb) up to 16" Class 1500 (lb) up to 10" Class 2500 (lb) up to 8"
Flange Test	Hydrostatic testing machine/ UI trasonic flaw detector/ X-ray detector/ Direct-reading Spectrograph/ Magnetic particle detector
Flange Equipment	Pushing Machine/ electric bevelling machine/ Press machine/ Bending machine/ Sand-blasting machine etc
Coating	Anti-rust Paint/ Zinc Plated/ Oil Black Paint/ Yellow Transparent/ Cold and Hot Dip Galvanized
Application	Bitumen upgraders Heavy oil refineries. Nuclear power (mostly seamless). Petrochemicals and acids.

Price stability can be seen in Spectacle Blind Flange manufacturers in India
ASME B16.48 have high corrosion resistance, particularly to stress corrosion cracking
Buy from Spectacle Blind manufacturers in India for factory price

Contact directly an ASTM A350 LF2 Spec Blinds and SS 304 Spectacle Blind Flange manufacturer in India for lowest price and fast delivery

Spectacle Blind Price

Type Of Flange	Size In Inch	SCH	Class	Grade	Price In INR (India) Per Piece
Spectacle Blind Flange	4	40	150	ASTM A105 A105	674.00
-	6	40	150	-	898.00
-	8	40	150	-	1254.00
-	10	40	150	-	1563.00
-	12	80	300	-	2231.00
-	14	80	300	-	2987.00
-	16	80	300	-	3676.00
-	18	80	300	-	4327.00
Spectacle Blind Flange	20	80	300	ASTM A105 A105	6743.00

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

Spectacle Blind Uses And Application

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

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

Spectacle Blind Installation

Spectacle Blind Thickness

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 Dimensions

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

Spectacle Blind Gasket

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

Slip Blind Flange Dimensions

ASME B16.48 Standard

Spectacle Blind Flange Drawing

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

How To Calculation Spectacle Blind Flange Thickness?

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

Class 300 Spectacle Blind Flange Dimensions

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

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

Class 1500 Spectacle Blind Flange 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

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.

Dimensions Of Class 150 Blanks For Use With Raised Face Flanges

Dimensions Of Class 150 Female Ring-Joint Facing Figure-8 Blanks

Dimensions Of Class 150 Male Ring-Joint Facing Figure-8 Blanks

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.

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