Flanges
Manufacturer, Exporters & Supplier of
Blind Flange
Blind Flange
Blind flange is like a flange cover, also called blind disk or flanged pipe plug. Blind flange has no holes in the center, for to seal the pipe opening. So it's function is the same as the pipe plug or the pipe cap. The difference is blind flange is a detachable equipment, easy to replace or do maintenance.
Our Supply Range
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
Major Function - Where to use
The blind flange's the major function is totally to separate the production medium. Which preventing the shut-off valve close not tightly, then affecting production, and even causing accidents.
At the location where is requires isolation should place the blind flange, such as at the equipment nozzle. Between the front and rear of the shut-off valve or between the two flanges, it is often recommend to use a figure 8 blind flange (figure-8 blank); For single-use parts such as pressing and purging usually use common round blind flange.
Sealing Surface
There are many types of sealing surfaces, such as flat, convex, concave and convex, grooved surface and ring joint surface.
Material Types and Standards
Blind Flange material usually required in carbon steel, stainless steel, alloy steel, copper, aluminum and etc.
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
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)