ASME B16.48 Spectacle Blind Flange Manufacturers and Suppliers

ASME B16.48 Spectacle Blind Flanges Manufacturers and Suppliers:

A Spectacle Blind Flange is a type of industrial flange that is used to temporarily or permanently block off a section of a pipeline or vessel. It consists of two metal discs – one solid and one with a hole in the center – that are bolted together with a gasket in between.

The dimensions of a Spectacle Blind Flange can vary depending on the size of the pipe or vessel it is being used on, but it typically conforms to the ASME B16.48 standard. This standard specifies the dimensions, materials, and tolerances for Spectacle Blind Flanges.

ISO Approved ASME B16.48 Class 150, Class 300, Class 600, Class 900, Class 1500, Class 2500 Spectacle Blind Flanges Manufacturer In India, BS10 Spectacle Blind Flange, AWWA C207 Spectacle Blind Flange, EN 1092-1 Spectacle Blind Flange, Series A and Series B Spectacle Blind Flange Dimensions Chart, Tolerances, Weight Chart, Thickness Chart, Cad Drawing Spectacle Blind Flanges

Standard Specifications Flanges Types Material Comparison Applications Dimensions Chart Tolerance

ADCO Forge and Fittings is a reputable manufacturer of industrial flanges, including Spectacle Blind Flanges, also known for its high-quality products, which are made from a range of materials including stainless steel, carbon steel, and alloy steel. Spectacle Blind Flanges are manufactured in accordance with ASME B16.48 standards and are available in various sizes and pressure ratings to meet the specific needs of its customers. We committed to providing excellent customer service and quick turnaround times to ensure that its customers projects are completed on time and to satisfaction.

Spectacle Blind Flanges are commonly made from stainless steel, a material that is highly resistant to corrosion and can withstand high temperatures and pressures. The thickness of the flange also varies depending on the size and pressure of the pipeline, but it is typically between 1/2 inch to 2 inches thick.

The shape of a Spectacle Blind Flange is sometimes referred to as a “Figure 8” because of the way the two discs are connected. It is commonly used in applications where frequent maintenance or inspection is required, as the flange can be easily removed to allow access to the pipeline or vessel.

We have the ready inventory of Spectacle Blind Flanges in the different size ranges of 2 Inch Class 150, 4 Inch Class 300, 6 Inch Class 600, 8 Inch Spectacle Blind Flange.

Spectacle Blind Flanges Standard Specifications

Standards

ANSI B16.5, ANSI B16.47, ANSI B16.36, ANSI B16.48, BS 4504, EN1092, UNI 2277/2278, DIN, JIS, SABS1123, GOST-12820

Form

SORF, WNRF, BLRF, SWRF, LAP Joint, Threaded, Reducing, Spectacle

BS/JIS

BS4504 , BS4504, BS1560, BS10,5K, 10K, 16K, 20K, 30K, 40K, 63K

Face Type

Flat Face (FF), Raise Face (RF), Ring Joint (RJT)

Dimensions

ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings

Size Range (inches)

From ½” (15 NB) to 48″ (1200NB)

Class

150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40.

Connection Type

RTJ, Lap-Joint Face, Raised Face, Flat Face, Large Male-Female, Small Male-Female, Large, Tongue & Groove, Small Tongue & Groove

Spectacle Blind Flanges in Stainless Steel 304/304L, SS 316/316L, SS 904L, Alloy 20, Carbon Steel, Nickel 200, Monel, Inconel, Hastelloy C22, Duplex Steel 2205, Titanium, Copper Nickel, SMO 254, Aluminum, Galvanized, MS Spectacle Blind Flange. Get best Price List.

ASME B16.47 Flanges Types

If you are looking for ASME B16.47 Pipe Flanges types, weight chart, size chart, tolerance, and dimensions with drawings then kindly click the below-mentioned forms of Flanges as per your requirements to get the complete details. For the quick quote / price list click here.

ASME B16.5 Spectacle Blind Flanges Material Grades

Stainless Steel Spectacle Blind Flange:	ASTM A182 F304, F304H, F304L, F304N, F304LN, F309H, F310, F310H, F310MoLN, F316, F316H, F316L, F316N, F316LN, F316Ti, F317, F317L, F321, F321H, F347, F347H, F348, F348H, 904L
Carbon Steel Spectacle Blind Flange:	ASTM A105 A53, A106, API 5L
Low Temperature Carbon Steel Spectacle Blind Flange:	ASTM A350 LF1, LF2, LF3
High Yield Carbon Steel Spectacle Blind Flange:	ASTM A694 F42, F52, F60, F65
Alloy Steel Spectacle Blind Flange:	ASTM A182 F5, F9, F11, F22, F1, F5/F5a, F91
Duplex & Super Duplex Spectacle Blind Flange:	ASTM A182, ASME SA182 Duplex 2205 (UNS S31803 – UNS S32205), Super Duplex 2507 (UNS S32750 – UNS S32760)
Nickel Alloy Spectacle Blind Flange:	ASTM / ASME SB B160 / B166 / B564 / B425/ B564 UNS 2200 ( NICKEL 200 ), UNS 2201 (NICKEL 201 ), UNS 4400 (MONEL 400 ), UNS 8020 ( ALLOY 20 / 20 CB 3, UNS 8825 INCONEL (825), UNS 6600 (INCONEL 600 ), UNS 6601 ( INCONEL 601 ), UNS 6625 (INCONEL 625), UNS 10276 ( HASTELLOY C276 ), Cupro Nickel 90/10 ( C70600, 2.0872 ), 70/30 ( C71500, 2.0882)
Other Steel Spectacle Blind Flange:	ASTM B381 Titanium Grade 2 ( R50400, 3.7035 ), Titanium Grade 5 ( N56400, 3.7165 ), ASTM B462 Alloy 20, ASTM A182 SMO 254/AL-6XN ( S31254, 1.4547 ), AISI 4130 ( G41300, 1.7218 )

ASME B16.48 Spectacle Blind Flanges Dimensions Chart

ASME B16.48 Spectacle Blind Flange - Dimensions Chart

Dimensions of Class 150 Spectacle Blind Flange as per ASME B16.48

NPS	Outside Ø A	Inside Ø B	Center Line C	THK t	Web Width 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

Dimensions of Class 300 Spectacle Blind Flanges as per ASME B16.48

NPS	Outside Ø A	Inside Ø B	Center Line C	THK t	Web Width W
1/2	51	16	65	6.4	38
3/4	64	21	80	6.4	38
1	70	27	90	6.4	38
1.1/4	79	42	100	6.4	38
1.1/2	92	48	115	6.4	38
2	108	61	125	9.7	51
2.1/2	127	73	150	9.7	51
3	146	89	170	9.7	64
3.1/2	162	102	185	12.7	64
4	178	114	200	12.7	64
5	213	141	235	15.7	76
6	248	168	270	15.7	76
8	305	219	330	22.4	76
10	359	273	385	25.4	102
12	419	324	450	28.4	102
14	483	356	515	31.8	108
16	536	406	570	38.1	108
18	594	457	630	41.1	114
20	651	508	685	44.5	121
24	772	610	810	50.8	140

Dimensions of Class 600 Spectacle Blind Flanges as per ASME B16.48

NPS	Outside Ø A	Inside Ø B	Center Line C	THK t	Web Width W
1/2	51	16	65	6.4	38
3/4	64	21	80	6.4	38
1	70	27	90	6.4	57
1.1/4	79	37	100	9.7	57
1.1/2	92	43	115	9.7	67
2	108	55	125	9.7	57
2.1/2	127	67	150	12.7	67
3	146	83	170	12.7	67
3.1/2	159	96	185	15.7	76
4	191	108	215	15.7	76
5	238	135	265	19.1	86
6	264	162	290	22.4	86
8	318	212	350	28.4	95
10	397	265	430	35.1	105
12	454	315	490	41.1	105
14	489	346	525	44.5	114
16	562	397	605	50.8	124
18	610	448	655	53.8	133
20	679	497	725	63.5	133
24	787	597	840	73.2	152

Dimensions of Class 900 Spectacle Blind Flanges as per ASME B16.48

NPS	Outside Ø A	Inside Ø B	Center Line C	THK t	Web Width W
1/2	60	16	80	6.4	38
3/4	67	21	90	6.4	41
1	76	27	100	6.4	57
1.1/4	86	37	110	9.7	57
1.1/2	95	43	125	9.7	67
2	140	55	165	12.7	57
2.1/2	162	67	190	12.7	67
3	165	83	190	15.7	67
4	203	108	235	19.1	76
5	244	135	280	22.4	86
6	286	162	320	25.4	86
8	356	212	395	35.1	95
10	432	265	470	41.1	105
12	495	315	535	47.8	105
14	518	346	560	53.8	114
16	572	397	615	60.5	124
18	635	448	685	66.5	133
20	696	497	750	73.2	133
24	835	597	900	88.9	152

Dimensions of Class 1500 Spectacle Blind Flanges as per ASME B16.48

NPS	Outside Ø A	Inside Ø B	Center Line C	THK t	Web Width W
1/2	61	16	80	6.4	38
3/4	67	21	90	9.7	41
1	76	27	100	9.7	64
1.1/4	86	35	110	9.7	64
1.1/2	95	41	125	12.7	70
2	140	53	165	12.7	70
2.1/2	162	63	190	15.7	76
3	172	78	205	19.1	76
4	206	102	240	22.4	89
5	251	128	290	28.4	89
6	279	154	320	35.1	89
8	349	203	395	41.1	102
10	432	255	480	50.8	114
12	518	303	570	60.5	114
14	575	333	635	66.5	127
16	638	381	705	76.2	133
18	702	429	775	85.9	146
20	752	478	830	95.3	152
24	899	575	990	111.3	178

Dimensions of Class 2500 Spectacle Blind Flanges as per ASME B16.48

NPS	Outside Ø A	Inside Ø B	Center Line C	THK t	Web Width W
1/2	67	16	90	9.7	38
3/4	73	21	95	9.7	41
1	83	27	110	9.7	64
1.1/4	102	35	130	12.7	64
1.1/2	114	41	145	15.7	70
2	143	53	170	15.7	70
2.1/2	165	63	195	19.1	76
3	194	78	230	22.4	76
4	232	102	275	28.4	89
5	276	128	325	35.1	89
6	314	154	370	41.1	89
8	384	198	440	53.8	102
10	473	248	540	66.5	114
12	546	289	620	79.2	114

Spectacle Blind Flanges ASME B16.47 Tolerance

SPECTACLE BLIND FLANGES FLANGES


O	Outside Diameter	When O is 24″ or less When O is over 24″	±0.06″ ±0.12″	±1.6 mm ±3.2 mm
R	Diameter of Contact Face	0.06″ (1.6 mm) raised face 0.25″ (6.4 mm) raised face	±0.03″ ±0.02″	±0.8 mm ±0.5 mm
B	Inside Diameter at Face of Socket Welding Flanges Inside Diameter of Slip-On, Lap Joint, and Socket Welding	NPS 10 and smaller NPS 12 through 18, inclusive NPS 20 and larger	±0.03″ ±0.06″ +0.12″, -0.06″	±0.8 mm ±1.6 mm +3.2 mm, -1.6 mm
B		NPS 10 and smaller NPS 12 and larger	+0.03″, -0.00″ +0.06″, -0.00″	+0.8 mm, -0.0 +1.6 mm, -0.0 mm
Q	Counterbore, Threaded Flanges	NPS 10 and smaller NPS 12 and larger	+0.03″, -0.00″ +0.06″, -0.00″	+0.8 mm, -0.0 + 1.6 mm, -0.0 mm
X	Diameter of Hub at Base	NPS 12 and smaller NPS 14 and larger	+0.09″, -0.06″ ±0.12″	+2.4 mm, -1.6 ±3.2 mm
c	Thickness	NPS 18 and smaller NPS 20 and larger	+0.12″, -0.00″ +0.19″, -0.00″	+3.2 mm, -0.0 +4.8 mm, -0.0 mm
	Drilling	Bolt Circle Diameter Bolt Hole Spacing	±0.06″ ±0.03″	±1.6 mm ±0.8 mm
	Eccentricity of Bolt Circle and Facing with Respect to Bore	NPS 2V2 and smaller NPS 3 and larger	±0.03″ ±0.06″	±0.8 mm ±1.6 mm
	Overall Length Through Hub	NPS 18 and smaller NPS 20 and larger	+0.12”, -0.03” +0.19”, -0.03”	+3.2 mm, -0.8 mm +4.8 mm, -1.6 mm

MSS SP-44 Spectacle Blind Flanges Applications

Oil and Gas

Nuclear Power & Defence

Petrochemical

LNG

Desalination

Mining & Minerals

List of countries we export & supplies our products

Myanmar, Nepal, Thailand, Vietnam, Philippines, Malaysia, Indonesia,

Singapore, Taiwan, Tasmania, Sri Lanka, Bangladesh, Bhutan, Cambodia,

Australia, New Zealand, Afghanistan, Tajikistan, Kyrgyzstan, Kazakhstan,

Uzbekistan, Turkmenistan, Iran, United Arab Emirates(UAE), Saudi Arabia,

Oman, Yemen, Iraq, Azerbaijan, Turkiye, Syria, Lebanon, Israel, Kenya,

Egypt, South Sudan, Eritrea, Djibouti, Ethiopia, Libya, Rwanda, Mali,

Niger, Chad, Central Africa Republic, Nigeria, Cameroon, Somalia, DRC,

Uganda, Tanzania, Angola, Zambia, Madagascar, Malawi, Namibia, Benin,

Zimbabwe, Botswana, Lesotho, South Africa, Algeria, Tunisia, Morocco,

Eswatini, Liberia, Sierra Leone, The Gambia, Senegal, Mozambique, Togo,

Mauritania, Burkina Faso, Ghana, Equatorial Guinea, Jordan, Timor-Leste,

Palestine, Laos, Armenia, Georgia, Maldives, Cyprus, Kuwait, Qatar, Peru,

Bahrain, Brunei, Finland, France, Germany, Ireland, Iceland, UK, US,

Greece, Hungary, Italy, Norway, Poland, Slovakia, Sweden, Canada, Fiji,

Romania, Cuba, Panama, Brazil, Colombia, Chile, Argentina, Venezuela,

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List of cities we supply our products

Naypyidaw, Kathmandu, Bangkok, Hanoi, Manila, Kuala Lumpur, Jakarta, Tunis,

Jurong East, Taipei City, Hobart, Sri Jayawardenepura Kotte, Dhaka, Thimphu,

Phnom Penh, Canberra, Wellington, Kabul, Dushanbe, Bishkek, Astana, Abuja,

Tashkent, Ashgabat, Tehran, Abu Dhabi, Riyadh, Muscat, Sana’a, Baghdad, Pretoria,

Baku, Ankara, Damascus, Beirut, Jerusalem, Nairobi, Cairo, Juba, Asmara, Rabat,

Djibouti city, Addis Ababa, Tripoli, Kigali, Bamako, Niamey, N’Djamena, Bangui,

Yaoundé, Mogadishu, Kinshasa, Kampala, Dodoma, Luanda, Lusaka, Antananarivo,

Lilongwe, Windhoek, Porto-Novo, Harare, Gaborone, Maseru, Cape Town, Bloemfontein,

Algiers, Mbabane, Lobamba, Monrovia, Freetown, Banjul, Dakar, Maputo, Lomé, Dili,

Nouakchott, Ouagadougou, Accra, Malabo, Amman, Vientiane, Yerevan, Tbilisi, Rome,

Malé, Nicosia, Kuwait City, Doha, Lima, Manama, Bandar Seri Begawan, Paris,

Helsinki, Berlin, Dublin, Reykjavík, London, Washington D.C., Athens, Budapest,

Oslo, Warsaw, Bratislava, Stockholm, Ottawa, Suva, Bucharest, Havana, Panama City,

Brasília, Bogotá, Santiago, Buenos Aires, Caracas, Mumabi, Chennai, Bengaluru,

Kolkata, Hyderabad, Pune, Ahmedabad, Jaipur, Surat, Visakhapatnam, Indore, New Delhi

Lucknow, Nagpur, Kochi, Kanpur, Guwahati, Coimbatore, Noida, Ghaziabad, Patna

SPECTACLE BLIND FLANGE ANSI B16.5, ASME B16.47