Blind flange

Blind Flanges
The blind flange is used to close ends of piping systems. It is a kind of round plate with no center hold but with all the proper bolt holes. This blind flange is available in various sizes and materials and is used to provide positive closer on the ends of pipes, valves or equipment nozzles.

This flange helps in easy access to a line once it has been sealed. The blind flange is sometimes custom made or machined to accept a nominal sized pipe to which reduction is being made. This reduction can be a threaded reduction or welded reduction.



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Dimensions of spectacle blinds according to ASME B16.48

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Dimensions of spectacle blinds according to  ASME  B16.48 for installation between  ASME B16.5 flanges. Material Symbol C Mn P S Si Ni Cr Mo Cu N V Co ASTM A105 0.35 0.60-1.05 0.035 0.04 0.10-0.35 0.4 0.3 0.12 0.4 _ 0.08 _ ASTM A350 LF2 0.3 0.60-1.35 0.035 0.04 0.15-0.30 0.4 0.3 0.12 0.4 _ 0.08 0.02 ASTM A182 F304 0.08 2 0.045 0.03 1 8.0-11.0 18.0-20.0 _ _ _ _ _ ASTM A182 F304L 0.03 2 0.045 0.03 1 8.0-13.0 18.0-20.0 _ _ _ _ _ ASTM A182 F316 0.08 2 0.045 0.03 1 10.0-14.0 16.0-18.0 2.00-3.00 _ _ _ _ ASTM A182 F316L 0.03 2 0.045 0.03 1 10.0-15.0 16.0-18.0 2.00-3.00 _ _ _ _ ASTM A182 F321 0.08 2 0.045 0.03 1 9.0-12.0 17.0-19.0 _ _ _ _ _ EN 10025 S235JR 0.2 1.4 0.045 0.045 _ _ _ _ _ 0.01 _ _ 20Mn 0.17-0.23 0.70-1.00 0.035 0.035 0.17-0.37 0.3 0.25 0.25 20 0.17-0.23 0.60-1.00 0.03 0.02 0.17-0.37 0.25 0.25 0.25 16Mn 0.13-0.19 1.20-1.60 0.03 0.02 0.20-0.60 0.3 0.3 0.25 Material Symbol Tensile Strength, min, MPa Yield point, min, Mpa Elongation, min, % Reduction of area, min,
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Flange Types

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A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification. Materials for Flanges ,  Measure the size of a flange Packing the pipe flange Pipe Flanges Raw Material Specifications Applications of flanges Flange Face Surface Finish Pressure Classes of Flanges Flanges Manufacturing Process Flange materials acc. to ASTM Stainless flange ,  Forged flange Below are our available industrial pipe flanges that will meet your project needs. We will help you put together your entire project and ship it to your closest port. We ship globally!  Contact us  to speak with one of our experienced staff, who can help you with your project needs. Blind Flanges >> The blind flange is used to close ends of piping systems. It is a kind of round plate with no center hold but with all the proper bolt holes. Figure-8 Blanks  >> A figure-8 blank (also called
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A figure-8 blank

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A figure-8 blank (also called a Spectacle Blind Flange) is a pressure-retaining plate with one solid end and one open end connected with a web or tie bar. Specifications: Size: 1/2” to 60”, DN 12mm to DN 1500mm Pressure class: Class 150 to Class 2,500, PN 2.5 to PN 250 Facing: RF / RTJ Material:  Cabon steel: A105, A350 LF2 Stainless steel: A182 F304/F304L/F316/F316L/F321 Alloy steel: F11, F12 Packing: plywood case and plywood pallet Keywrods: Spectacle Blind Flanges, Spectacle Blind Flange, Spectacle Flanges, Spectacle Blind Flanges manufactory  Standards, Dimensions & Weight ASME B16.48 Class 150 ASME B16.48 Class 300 ASME B16.48 Class 600 ASME B16.48 Class 900 ASME B16.48 Class 1500 ASME B16.48 Class 2500 Key Features: Can be attached to the pipe without welding (sometimes an additional seal weld is used as well) Ideal for higher pressure and temperature applications for small pipe sizes Not recommended for larger loads, especia
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