Manufacturers of Spectacle Blind Flanges, Spectacle Blind Flanges Manufacturers
Our company is a renowned exporter, manufacturer and supplier of spectacle flanges in the steel market industry worldwide. Spectacle Blind Flanges is a strain preserving plate with one open end and one solid end connected with a web or a tie-bar. In paradigm procedure, the open end shapes closes between the two flanges and permits the regular flowage all the way through the pipe work. On the other hand, if the solid end is shift towards forth and back into its place, Spectacle Flanges capably cleans of the pipe and halts the flowing. In the meantime, these flanges are at length used in particular states with their main
advantage that they can be connected to the pipe by means of no welding
½” (15 NB) to 60” (1500NB) in 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ASA 300, PN 6,10,16,25, 40,64,100,160 ETC. available with NACE MR 01-75
½” (15NB) to 60” (1500NB)
Class / Pressure : 150#, 300#, 600#, 900#, 1500#, 2500# PN6, PN10, PN16, PN25, PN40, PN64
B16.5, BS4504, EN-1092, B16.36, B16.47, B16.48, MSS SP44
STD : ANSI Flanges, ASME Flanges, DIN Flanges, EN Flanges, BS Flanges, API, JIS, NACE etc.
Dimensional accuracy, Corrosion resistance, High efficiency, Excellent finish, Durable
Stainless Steel Spectacle Blind Flanges :
Standard : ASTM / ASME A/SA 182 Grade : F 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L
Duplex Steel Spectacle Blind Flanges :
Standard : ASTM / ASME A/SA 182 Grade : F 44, F 45, F51, F 53, F 55, F 60, F 61
Aluminium Spectacle Blind Flanges :
Standard : ASTM B247, B361. Grade : 2024, 6061, 6063, 6101, 7075.
Titanium Spectacle Blind Flanges :
Grade : Grade 1, Grade 2, Grade 4, Grade 5, Grade 6, Grade 7, Grade 9, Grade 19, Grade 23
Carbon Steel Spectacle Blind Flanges :
Standard : ASTM A 105/A694/ A350 LF3/A350 LF2. Grade : F42/46/52/56/60/65/70
Low Temperature Carbon Steel Spectacle Blind Flanges :
Alloy Steel Spectacle Blind Flanges :
Standard : ASTM A182 Grade : F1/F5/F9/F11/F22/F91
Copper Alloy Spectacle Blind Flanges :
Grade : UNS NO. C 70600 (CU -NI- 90/10), C 71500 (CU -NI- 70/30) C 71640
Nickel Alloy Spectacle Blind Flanges :
Standard : ASTM / ASME SB 564 / 160 / 472• Nickel 200 – UNS N02200 • Nickel 201 – UNS N02201 • Monel 400 – UNS N04400
• Monel K500 – UNS N05500 • Inconel K600 – UNS N06600 • Inconel 601 – UNS N06601
• Inconel 625 – UNS N06625 • Inconel 800 – UNS N08800 • Inconel 800H – UNS N08810
• Inconel 825 – UNS N08825 • Hastelloy C276 – UNS N10276 • Alloy 20 – UNS N08020
ANSI B16.5 Spectacle Blind Flanges, ASME B.16.5 Spectacle Blind Pipe Flanges, DIN Spectacle Blind Flange
We are specialized in manufacturing high standard quality of Spectacle Blind Flanges. A spectacle flange is a specialty flange made of two metal discs attached in the middle by a small section of steel. Spectable flanges get their name because they look like a pair of reading glasses, or spectacles. Spectacle flanges, also known as spectacle blind flanges, are most commonly used on piping systems that need to be separated regularly or where the flow through the systems is regularly stopped. One end of the spectacle flange is solid, while the other end has a hole in the center. The spectacle flange can be rotated to place either the solid or hollow end within the pipe system, thereby opening or closing the flow.
Steel flanges offer a way to secure metal pipe and prevent leaks and other damage. Choosing the right metal flange and other metal fittings is dependent upon what type of substance flows through the piping system. A steel flange called a Spectacle Blind flange is designed to offer extra support and safety in certain high-pressure areas found in residential, commercial and industrial piping systems.
Spectacle Blind Spectacle Blind flanges, steel Spectacle Blind Spectacle Blind flanges are available with following specifications:
We proffer Spectacle Blind Flange pipe flanges that are being manufactured at our best services to companies in a range of industries including power generation, shipbuilding, petrochemical plants, waste water treatment plants, oil refineries, paper mills, turnkey projects and pharmaceutical plants among others.
Specification
Standards: ANSI B16.47 Series A & B, ANSI B16.5, API-605, MSS SP44, ASA, EN1092, BS 4504, DIN
Type: Spectacle Blind Flanges / Spectacle Blind
Size: ½” (15 NB) to 48″ (1200NB)
Class : 150 Class, 300 Class, 400 Class, 600 Class, 900 Class, 1500 Class, 2500 Class, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Material: Stainless Steel, Duplex, Super Duplex, Nickel Alloys, Alloy Steel, Carbon Steel, Low temperature Steel
Material Grade:
Stainless Steel Spectacle Blind Flanges: ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L
Duplex & Super Duplex Steel Spectacle Blind Flanges: ASTM A182 / ASME SA182, F 44, F 45, F51, F 53, F 55, F 60, F 61
Carbon Steel Spectacle Blind Flanges: ASTM A105 / ASME SA105, ASTM A350 / ASME SA350, ASTM A181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70
Low Temperature Carbon Steel Spectacle Blind Flange (LTCS Spectacle Blind): Flange, A350 LF2/A350 LF3
Alloy Steel Spectacle Blind Flanges: ASTM A182 / ASME SA182 & A387 F1, F5, F9, F11, F12, F22, F91
Nickel Alloy Spectacle Blind Flanges: ASTM / ASME SB 564 / 160 / 472, 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 C 276 )
ASME B16.5 Spectacle Blind Flange – 150 lbs, ansi b16.5 socket weld flange dimensions , Spectacle Blind Flange class 150, 150lb Spectacle Blind Flange-ASME/ANSI B16.5/Standards, Dimensions & Weight
Specification :
Type: Spectacle Blind Forged Flange
Material: Carbon steel: A105,SS400,SF440 RST37.2,S235JRG2,P250GH,C22.8, Stainless Steel: F304 F304L F316 F316L 316Ti, Copper, High Nickel Alloys.
Standard: ANSI/DIN/JIS
Size: 1/2-78 inch (DN15-DN2000)
Pressure: ANSI class 150, 300, 600, 1500, 2500, DIN PN6,PN10,PN16,PN25,PN40,PN64,PN100,PN160
The wide range of ANSI B 150 Class- Spectacle Blind Flanges offered by us is in conformation with international quality standards. These are designed as per the standards set by various national and international authorities and are manufactured using high grade steel. Our range of flanges is highly acknowledged in the domestic and global markets, due to features such as application specific design and corrosion resistance.
Spectacle Blind Flanges
Class 150
| NPS | Outside Ø A |
Inside Ø B |
Centerline C |
Thickness 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 |
| NPS | Outside Ø A |
Inside Ø B |
Centerline C |
Thickness t |
Web Width W |
300lb Spectacle Blinding Flange-ASME/ANSI B16.5/Standards, Dimensions & Weight, class 300 socket weld flange
Spectacle Blind Flanges
Class 300
| NPS | Outside Ø A |
Inside Ø B |
Centerline C |
Thickness 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 |
| NPS | Outside Ø A |
Inside Ø B |
Centerline C |
Thickness t |
Web Width W |
Note:
1) Depth of Socket (D) is covered by ANSI B 16.5 only in sizes through 3 inch, over 3 inch is at the manufacturer’s option.
socket weld flange class 600, 600lb Spectacle Blinding Flange-ASME/ANSI B16.5/Standards, Dimensions & Weight
Spectacle Blind Flanges
Our company offers a wide range of flanges like PL, Spectacle Blind, BL, WN,SO,LJ, 600lb Spectacle Blind Flange-ASME/ANSI B16.5 etc., which is precisely engineered in accordance with international quality standards totally. These flanges are highly durable, corrosion resistant and reliable. Our range of flanges finds application in industries like engineering, construction, chemical, oil field and power plant. We offer these flanges in various dimensions as per the specifications provided by our clients. To gain optimum client satisfaction, we ensure safe packaging and prompt delivery of the ordered consignment.
Class 600
| NPS | Outside Ø A |
Inside Ø B |
Centerline C |
Thickness 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 |
| NPS | Outside Ø A |
Inside Ø B |
Centerline C |
Thickness t |
Web Width W |
Flange – Spectacle Blind , ANSI Class 1500
, long welding neck flange 1500, 1500lb Spectacle Blinding Flange-ASME/ANSI B16.5/Standards, Dimensions & Weight
- ASME Standards
- ASME B16.5 – Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard
- ASTM Standards
- ASTM A105 / A105M – Specification for Carbon Steel Forgings for Piping Applications
- Bolt circle diameters are 1/8 inch larger than bolt diameter.
| NPS | Outside Ø A |
Inside Ø B |
Centerline C |
Thickness 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 |
| NPS | Outside Ø A |
Inside Ø B |
Centerline C |
Thickness t |
Web Width W |
Note:
1) Depth of Socket (D) is covered by ANSI B 16.5 only in sizes through 3 inch, over 3 inch is at the manufacturer’s option.
Advantages of Spectacle Flanges
- Spectacle flanges require no welding for installation
- Spectacle flanges from Houston’s Buffalo Flange have a wide range of pressure tolerances
- Buffalo Flange Inc. will manufacture spectacle flanges to your specifications
Spectacle Blind Flange Specification, Spectacle Blind Flanges Specification
Spectacle Blind Flange, we supply Spectacle Blind flange, Spectacle Blind forged Flange, Spectacle Blind Flange in forged steel, Stainless Steel, AS,CS etc..
We have a large inventory of Spectacle Blinds and Spacers in 516-Gr70 Carbon Steel, 304, and 316 Stainless Steel
provided with either a Mill or Serrated Finish. All of our Spectacle Blinds are ground to a smooth edge finish and stamped with the flange rating & line size. The Carbon Steel Blinds are painted flat black and color coded on the Tie bar based on the flange rating.
• SPECTACLE BLIND Flange sizes 1/2”—96”
• SPECTACLE BLIND Flange ratings 150—2500#
• 125-250 RMS Serrated Finishes or Mill Finish Available
• Ring Type Joint—Male or Female—Oval or Octagonal
• Stamped with Size & Rating
• Ground to provide smooth edges
• Q/A & Q/C: Manufactured under our strict Quality
Assurance Program
• In-Stock orders shipped same day
• Can be made to your customized specifications
Specification of Spectacle Blinding Flange
Spectacle Blind flanges are widely used in low pressure piping systems, as no welding is involved while connecting the flanges to pipes or other equipment. However, the flange may be welded around the joint after assembly, but it is not considered a satisfactory method of increasing its applications. Spectacle Blind flanges are also known as screwed flanges and are similar to slip-on flanges, but the bore is threaded to enable assembling without welding. Spectacle Blind pipe flanges are usually used with pipes that have external threads.
Description of Spectacle Blinding Flange
| Size | : | ½" (15 NB) to 48" (1200NB) |
| Class | : | 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150#, 2.0MPa, 5.0MPa, 10.0MPa, 15.0MPa, 25.0MPa, 42.0MPa |
| Standards | : | ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48 |
| DIN | : | DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673 |
| B.S | : | BS4504 , BS4504, BS1560, BS10 |
4″ Class 150 Spectacle Blind Raised Face Flange
- Bolt Diameter:5/8"
- Bolt Hole Diameter:7-1/2"
- Class:150
- Flange Outer Diameter:9.00"
- Hub Diameter:5.31"
- Length Through Hub:1.31"
- Material:Steel
- Number of Holes:8
- Pipe Size:4"
- Specification:ASTM A 105, ANSI B16.5
- Style:Raised Face
- Thickness:0.94"
- Type:Spectacle Blind Flange
- Product Weight: 13 lbs
Spectacle Blind Flange Standards, Spectacle Blind raised face flange
Stainless Steel : ASTM A 182, A 240
Grade : F304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L, Duplex stainless steel UNS S31803, 2205, Super Duplex stainless steel UNS S32750
Carbon Steel : ASTM A 105, ASTM A 181
Alloy Steel : ASTM A 182, GR F1, F11, F22, F5, F9, F91
Nickel Alloys : Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276
Copper Alloys : Copper, Brass & Gunmetal
Size : 1/8" NB TO 48"NB.
Class : 150#, 300#,400 #,600#,900#, 1500# & 2500 #.
Standard
ANSI :ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
B.S : BS4504 , BS4504, BS1560, BS10
Spectacle Blind Flange Pressure Ratings, Spectacle Blind Flange Drawing
We are specialized in offering ASTM A182 Spectacle Blind Flanges which are used in various engineering applications and can be availed in various grades like Stainless Steel 304, Stainless Steel 316, Stainless Steel 317L, Stainless Steel 347, Stainless Steel 310, Inconel 600, Inconel 625, Incoloy 825, Monel 400, Monel K-500 , Monel R-405, Hastelloy C276, Hastelloy C22, Duplex Steel 2205, Super Duplex Steel 2507, Alloy steel, Carbon Steel
Spectacle Blinding Flange, Spectacle Blind Forged Flanges, Spectacle Blind Flange Production Range
Size: 1/2″ (15 NB) to 48″ (1200NB)
Standards: ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Pressure Ratings: Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc.
Spectacle Blind Flange price list
12inch pipe fitting spectacle blind flange price
US $5-1520 / Piece
cs spectacle blind flange 300 lb supplier/price
US $1-500 / Piece
factory price spectacle blind flange figure 8 flange
US $1-100 / Piece
ansi b16.5 150lb spectacle blind flange supplier/price
US $1-500 / Piece
300LB spectacle blind flange price with great price
US $1000-1500 / Ton
Types of Spectacle Blind Flange, Spectacle Blind flanges Types
| SS 310 / 310S Spectacle Flanges | • | Duplex Steel UNS S31803 Spectacle Flanges | |
| • | Stainless Steel 304 / 304L Spectacle Flanges | • | Duplex Steel Spectacle Flanges |
| • | Stainless Steel 316 / 316L Spectacle Flanges | • | Duplex Steel UNS S32205 Spectacle Flanges |
| • | Stailess Steel 321 / 321H Spectacle Flanges | • | Super Duplex UNS S32750 Spectacle Flanges |
| • | Monel 400 Spectacle Flanges | • | Hastelloy C276 Spectacle Flanges |
| • | SS Spectacle Flanges | • | Steel Spectacle Flanges |
| • | Inconel 625 Spectacle Flanges | • | Alloy 20 Spectacle Flanges |
| • | Cu-Ni 70/30 (C71500) Spectacle Flanges | • | Cu-Ni 90/10 (C70600) Spectacle Flanges |
| • | ASTM A105 Spectacle Flanges | • | ASTM A350 LF2 / LF3 Spectacle Flanges |
| • | Inconel 600 Spectacle Flanges | • | Hastelloy B2 Spectacle Flanges |
| • | SS 317 / 317L Spectacle Flanges | • | Super Duplex Spectacle Flanges |
| • | SS 347 Spectacle Flanges | • | Super Duplex UNS S32950 Spectacle Flanges |
| • | Monel K500 Spectacle Flanges | • | Hastelloy C22 Spectacle Flanges |
| • | Stainless Steel 446 Spectacle Flanges | • | ANSI Spectacle Flanges |
| • | Inconel 718 Spectacle Flanges | • | 904L Spectacle Flanges |
| • | Incoloy 800 Spectacle Flanges | • | Titanium Gr 2 Spectacle Flanges |
| • | Incoloy 825 Spectacle Flanges | • | Titanium Gr 5 Spectacle Flanges |