What is a Blind flange?
Blind Flange
Stainless Steel Blind Flange, also known as a blind disk or flanged pipe plug, is similar to a flange cover. To seal the pipe entrance, a blind flange has no openings in the middle. As a result, it serves the same purpose as a pipe stopper or a pipe cap. The distinction is that a blind flange is a removable piece of equipment that is simple to repair or maintain. Sanjay Metal India is a leading ANSI B16.5 BLRF Flanges Stockist and Supplier in India. The primary function of the blind flange is to completely isolate the production medium. This prevents the shut-off valve from closing properly, affecting production and perhaps causing accidents.
Blind Flange Dimensions, Blind Flange Specification, Blind Flange Manufacturing Standards, and Blind Flange types
Blind Flange Dimensions
- General use OD range: 1/2”, 2”, 3”, 4”, 6”, 8”, 10”, 12”, to 24”.
- Special made OD: Up to 60”.
- Class range: Class 150, Class 300, 400, 600, 900, 1500, 2500
- Flange face type: RF (Raised Face), RTJ (Ring Type Joint)
Blind Flange Specification
- Material: Carbon, Alloy and Stainless Steel
- Standards: ASTM A105, ASTM A182
- Sizes: 1/2” to 24”, Customized up to 48”
- Thickness: Schedule 10(S) to SCH 160
- Pressure Ratings: Class 150 to 2500
- Face Type: RF, RTJ
Blind Flange Standards
Blind flanges are primarily made of carbon steel, stainless steel, alloy steel, copper, aluminum, and other materials.
- Carbon steel blind flange: ASTM A105
- Alloy steel: ASTM A182 F5, F9, F11, F22, F91
- Stainless steel blind flange: ASTM A182 F304/L, F316/L
Manufacturing Standards
- ASME B16.5
- BS 3293
- DIN 86029
SS Blind Flange Types, ASTM A182 Stainless Steel Flange Grades
Blind Flange Types
- Companion flanges
- Socket Weld Flanges
- Lap Joint Flanges
- Long Weld Neck Flanges
- Orifice Flanges
- Slip-On Flanges
- Threaded Flanges
- Weld Neck Flanges
- Blind Flanges
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