Blind Flange

The Blind Flange is used at the end and to close the piping systems and pressure vessel openings. It is commonly used in petrochemical, Piping engineering and water services. It is sometimes customized or machined to suitable for threaded reduction or welded reduction. Blind flange is typically provided with a raised face(RF), flat face(FF), or ring type joint face(RTJ). When a raised face is necessary for blind flange, the standard height is 1/16" for blind flanges under 400#. For blind flange of 400# and up, the standard blind flange raised face height is 1/4".
Blind flange manufacturer Duwa Piping can supply the blind flange in all sizes, materials and specifications strictly acc. to the design standard.
Specifications:
Size: 1/2" to 96".
Flange Face: Raised Face(RF), Flat Face(FF), Ring Type Joint(RTJ), T&G.
Flange Pressure: 150#--6000#(PN6-PN40).
Schedule: SCH40/XS, STD.
Material:
Carbon Steel: ASTM A105.
Low-Temperature: ASTM A350 LF1 LF2 CL1/CL2, LF3 CL1/CL2.
Stainless Steel: ASTM A182 F304/304L, F316/316L, F321.
Alloy Steel: ASTM F1 F5 F9, F11, F91.
Pipeline Steel: A694 F42 F52 F60 F65, A516 Gr60, 65, 70.
 
 

Products List

ANSI B16.47 Blind Flange Carbon Steel RF
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DW BF-5

China ANSI B16.47 Blind Flange manufacturer Duwa Piping provides ANSI B16.47 Blind Flange with material Carbon Steel,RF face, Size from 24 Inch to 92 Inch.
RTJ Blind Flange, ASTM A105, A350 LF1/LF2, CL150-1500, 1/2-90 Inch
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DW-BF-2

China RTJ Blind Flange Manufacturer Duwa Offers RTJ Blind Flange, ASTM A105, ASTM A350 LF1/LF2, ASME B16.5, CL150, 300, 900, 1500, 1/2-90 Inch.
ASTM A105 Forged Steel Blind Flange,ANSI B16.5, 12 Inch,Class 300
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DW BF-9

China A105 Forged Steel Blind Flange Manufacturer Duwa Supplies ASTM A105 Forged Steel Blind Flange, ANSI B16.5, 12 Inch, Class 300, Raised Face.
API 6A Blind Flange Type 6BX 10000PSI
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DW BF-8

China API 6A Blind Flange Manufacturer Duwa Piping supply API 6A Type 6BX 10000PSI Blind Flange Type 6BX 10000PSI, with carbon steel, stainless steel, also can supply blind flange pressure rating from 2000psi, 3000psi, 5000psi, 10000psi, 15000psi, 20000psi, type 6b, 6bx.
Stainless Steel Blind Flange RF A182 F304 CL600
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DW BF-7

China Stainless Steel Blind Flange Manufacturer Duwa Piping provides stainless steel blind flange RF,A182 F304,CL600,F316 and F316 L is also available.
Raised Face Blind Flange A105 DN150 Class150
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DW BF-6

China Raised Face Blind Flange Manufacturer Duwa Piping offer Raised Face Blind Flange A105 DN150 Class150, ASME B16.5
ASME B16.5 Slip Blind Flange 8 Inch Class 300
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DW BF-4

China ASME B16.5 Slip Blind Flange manufacturer Duwa Piping offer ASME B16.5 Slip Blind Flange Size 8 Inch,Class 300
ASTM A350 LF2 Blind Flange 24 Inch Class600
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DW BF-3

China ASTM A350 LF2 Blind Flange manufacturer Duwa Piping provides A350 LF2 Blind Flange 24 Inch Class600,Raised Face, A350 LF1 is also available.
CS ASTM A105 Blind Flange, CL150-1500, SCH STD-XS, 1/2-90 Inch
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DW-BF-1

China CS ASTM A105 Blind Flange Manufacturer Duwa Offers CS ASTM A105 Blind Flange, ASME B16.5, CL150-1500, SCH STD, XS Wall Thickness, 1/2-90 Inch.