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Blind 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: A182 F 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-316N-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 70

Pressure Grade
American System: CLASS150, CLASS300, CLASS400, CLASS600, CLASS900, CLASS1500
European System: PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100

Flange Facing
American System: Flat Face (FF), Raised Face (RF). Tongue Face (T), Groove Face (G), Female Face (F), Male Face (M), Ring Joints Face (RJ)
European System: Flat Face, Raised Face, Tongue Face, Groove Face, Female Face, Male Face, Ring Joints Face.

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.

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