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Blind BF flange

Without a bore in the center, blind flange is designed to block off pipelines.

Available Sizes
3/8"~80", DN10~DN2000
Standards
GB/T9112-2000, GB/T9123.1-2000, GB/T9123.2-2000, GB/T9123.3-2000, GB/T9123.4-2000, GB/T9124-2000 SH/T3406-1996 GD2000 GD87-1101  JB/T74-1994, JB/T75-1994, JB/T86.1-1994, JB/T86.2-1994 HG/T20592-2009, HG/T20614-2009, HG/T20615-2009, HG/T20623-2009, HG/T20635-2009
ASME B16.5-2009, ASME B16.47-2006 MSS SP 44-2006
CSA Z245.12-05-2005 EN1092-1-2007, EN1759-1-2004 DIN2527
BS1560-3.1-1989, BS4504-3.1-1989 AFNOR NF E29-200-1-2007  
ISO7005-1-1992 AS2129-2000 JIS B2220-2004
Raw Materials
Carbon steel:A105
Alloy steel:A182F 1-F 2-F 5-F 9-F 10-F 91-F 92-F 122-F 911-F 11-F 12-F 21-F 22
Stainless steel:A182 304-304H-304L-304N-304LN 316-316H-316L-316LN 321-321H 347-347H
Low-temperature steel:A522 A707 Grade L 1-L 2-L 3-L 4-L 5-L 6-L 7-L 8
High-performance steel:A694 F 42-F 46-F 48-F 50-F 52-F 56-F 60-F 65-F 70F
Pressure Grade
American System:CLASS150 CLASS300 CLASS400 CLASS600 CLASS900 CLASS1500
European System:PN2.5,PN6,PN10,PN16,PN25,PN40,PN63,PN100.
Flange Facing
Flat face(FF),Raised face(RF),Tongue face(T),Groove face(G),Female face(F),Male face(M),Ring joints face(RJ).
Producing Process
Cutting of Raw Material-Die Forging-Machining
Application
The flange is widely used in many areas such as power generation plant, petroleum industry,natural gas system,chemical industry,shipbuilding industry,heating system,paper-making industry,metallurgy industry,etc.