Home » Forged Flanges » 321 347 904L S31254 310S Astm A182 Weldneck 1 12 Rf So 150# Blind Ff Flange

321 347 904L S31254 310S Astm A182 Weldneck 1 12 Rf So 150# Blind Ff Flange

Blinds are flanges without a center bore (hole or opening) and are available in both Raised Face (RF) and Flat Face (FF) styles. While most flange types create a connection point that allows the flow of liquid, gas, or air, blind flanges are used to seal the end of a piping system and prevent flow. Blind flanges may be used when testing pipe pressure, to create an access point in a piping system, to temporarily seal a piping system while modifying or repairing the line, or to create a long-term seal to terminate a piping system.

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Type: WN/LWN/SO/SW/blind/plate/threaded/anchor/swivel/girth/lap joint/reducing/orifice
spectacle blind/paddle blind/spacer ring/orifice plate/bleed ring
Speical Products: Rings/Forgings/Disc/Shaft Sleeve
Standard Type Class Size
ASME B16.5 WN/LWN/SO/Blind/Lap Joint 150#-2500# 1/2″-24″(Except Blind Flange 2500lb 1/2″-12″)
SW flange 150#-1500# 1/2″-3″(Except 1500# 1/2″-2 1/2″)
Threaded 150#-900# 1/2″-24″
1500# 2500# 1/2″-2 1/2″
ASME B16.47 Series A WN/blind flange 150# -900# 22″-48″(Except 900# Size:26″-48″)
ASME B16.47 Series B WN/blind flange 75#-300# 26″-48″
400# 600# 900# 26″-36″
DIN2527 Blind flange PN6-PN100 DN10-DN1000
DIN2543 SO flange PN16 DN10-DN1000
DIN2544 SO flange PN25 DN10-DN1000
DIN2545 SO flange PN40 DN10-DN500
DIN2565 Threaded flange with Neck PN6 DN6-DN200
DIN2566 Threaded flange with Neck PN16 DN6-DN150
DIN2567 Threaded flange with Neck PN25 PN40 DN6-DN150
DIN2568 Threaded flange with Neck PN64 DN10-DN150
DIN2569 Threaded flange with Neck PN100 DN10-DN150
EN1092-1:2002 Plate flange for welding/loose plate flange with weld-on plate collar or for lapped pipe end/Blind Flange/WN flange PN2.5-PN100 DN10-DN4000
JIS B2220 Welding Flange, Lap joint flange, threaded flange PN6-PN100 DN10-DN1500
BS4504 BS10 TableD/E Plate Flange for welding/WN flange/Blank Flange PN6-PN100 DN10-DN1500
Sealing Surface RF FF RTJ TF GF LF LM
Flange Face Finish Stock Finish/Spiral Serrated/Concentric Serrated/Smooth Finish(Ra 3.2 and 6.3 micrometers)
125-250 AARH(it is called smooth finish)
250-500 AARH(it is called stock finish)
Coating Vanish, yellow paint, anti-rust oil, galvanizing etc
Stainless Steel ASTM A182 ASTM A182 F304/F304L
ASTM A182 F316/F316L/F316Ti
ASTM A182 F316MoLN/F316LN
ASTM A182 F310/F317L/F347
ASTM A182 F51/F53/F55/F44/F904L/F60/F88

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