Flanges

The flanges are used to connect pipes, valves and other equipment to form a piping system. Duwa Piping can supply flanges Ex-works in 3days and the warranty time is 3 times longer than other supplier.
Standard:
ANSI Flange, ASME Flange, API Flange, DIN Flange, EN10921-1 Flange, JIS/KS Flange, Gost Flange, AWWA C207 Flange.
Flange 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.
Flange Face: Raised Face(RF), Flat Face(FF), Ring Type Joint(RTJ), T&G.
Flange Pressure: 150#--6000#(PN6-PN40).
Schedule: SCH40/XS, STD.
 

Products List

ASTM A105 WELD NECK FLANGE, ASME B16.5, 10IN, 150 LB, SCH STD
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DW WNF-13

Chinese ASTM A105 Weld Neck Flange Manufacturer Provides ASTM A105 Weld Neck Flange, ASME B16.5, Size 10IN, Pressure 150 LB, Wall Thickness SCH STD.
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.
Raised Face Weld Neck Flange, A105,1/2-90 Inch,CL150-1500,SCH STD-XS
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DW-WNF-1

China Raised Face Weld Neck Flange Manufacturer Duwa Offers C.S A105 Weld Neck Flange, Raised Face, ASME B16.5, CL150-1500, SCH-STD, 1/2-90 Inch.
Tube Sheet
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DW SPF-5

"Tube-sheet/Tubesheet for heat exchanger, A tube sheet is usually made from a round flat piece of plate,sheet with holes drilled to accept the tubes or pipes.
Spectacle Blind flange ASME B16.48, 20 Inch, Class 150, A516 GR70
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DW SPF-4

China Spectacle Blind flange ASME B16.48 manufacturer Duwa offers Spectacle Blind made acc.to ASME B16.48, 20inch, Class 150, Material A516 GR70.
Raised Face Slip On Flange, 8 inch, Class 150, China
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DW SOF-9

China Raised Face Slip On Flange Manufacturer Duwa Offers 8 inch, Class 150, Slip-On Flange, RF, ANSI B16.5, made in China.
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.
ASTM A182 WELD NECK FLANGE, CL150, DN100, SCH 40, RF
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DW WNF-16

China ASTM A182 Weld Neck Flange Manufacturer Duwa offers ASTM A182 F316 Weld Neck Flange, DN100, CL150, SCH 40, RF, generally applied in machine. Ex-works in 3 days