904L Flanges
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We produce 904L flanges,904 L flanges,904L Blind Flanges,904L Welding Neck Flanges,904L Slip On Flanges,904L Socket Welding Flanges,904L Lap joint Flanges,904L Ring joint Flanges,904L Slip-on flanges,904L Weld Neck Flanges,904L WN flanges,904L LWN flanges, 904L Long weld neck flanges,Nimonic 90 orifice flanges,904L Spectacle blind Flanges,904 L Spectacle flanges, 904 L spacer ring flanges,904L Swivel Ring Flanges,904L WNRF Flanges,904L SORF Flanges,904L SWRF Flanges,904L Threaded Flanges,904L Ring Type Joint Flanges,904L BLRF Flanges,904L RTJ Flanges from china
The size of 904L flanges that we could do is from 1/2” – 96”, DN15-DN2000
We could produce 904L flanges with pressre from 150LB-2500LB or PN6-PN100
The face of 904L flanges that we could do is in Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Also we could produce 904L flanges as per the drawing of the clients
Following is the standard of 904L flanges that we could do:
American standard of 904L flanges in ANSI B16.5 ;ASME B16.47 Series A(MSS SP-44);ASME B16.47 Series B(API 605);ANSI B16.1,AWWA C207
Germany standard of 904L flanges in DIN 2630,2620,2632,2633,2634,2635,2636,2637,2638,2501(WN);
British standard of 904L flanges in BS3293,BS4504,BS10
The Italy standard of 904 L flanges in UNI27676-67,UNI27677-67,UNI27678-67,UNI6083-67,UNI6084-67,,UNI6088-67,,UNI6089-67,UNI27699-67,,UNI2300-67,UNI27680-67,,UNI27681-67,,UNI27682-67,,UNI27683-67
Janpanese standard of 904L flanges in JIS B27620,
Korean Standard of 904L flanges in KSB 1503,KSB 6216,KSB 2332,KSB 2333,KSD 3578,KSD 4308.
Australian standard of 904L flanges in AS 4087,AS 2129,AS/NZS 4320.1
ISO standsard of 904L flanges in ISO 7005-1,ISO 9624
Russian standard of 904L flanges in GOST 12820,GOST 12821,GOST 12836,GOST 12820-80,GOST 12821-80,GOST 12836-80.
European standard of 904 L flanges in EN1092-1
South african standard of 904L flanges in SABS-1123/SANS-1123
As per surface treatment of 904 L flange, we could do Anti-rust Oil;Black /Yellow Paint;Hot-dipped Galvanization as per the requirement of the clients
The material grade of 904 L flanges is by forging as per the standard of ASTM B462.
We could do solution treatment, ageing treatment for 904L flanges as per the requirement of the clients
904L is fully austenitic and is less sensitive to precipitation ferrite and sigma phases than conventional austenitic grades with high molybdenum content.

The chemical composition of 904L flanges is as follows


0.02 max


19 - 23


1 - 2




2 max


4 - 5


23 - 28


0.045 max


1 max


0.035 max

The mechanical property of 904L flanges is as follows


Tensile Strength (KSI) min

Yield Strength 0.2% Proof (KSI) min

Elongation (% in 50mm) min


Rockwell B (HR B)

Brinell (HB)





70-90 typical

In order to control the quanlity of 904L flanges, our workshop has followsing inspection equipment:Impact testing machine ,Magnetic particle flaw detector ,Metallographic Microscope ,Portable Spectrometer ,Ultrasonic Flaw Detector ,Universal testing machine ,Hardness testing machine
We could supply material certificate of 904L flanges  as per the standard of EN10204-3.1 or EN10204-3.2 of third party(like TUV,DNV,GL and so on)
Our 904L flanges will be 100% Ultrasonic Inspection as per the forging parts UT Test standard of ASTM A 388 or EN102768.
Our 904L flanges are widely used in many industries,such as bearing industry, power-generation including steam and gas-turbine, wind energy, mining and construction equipment, oil & gas, petrochemical, defense, rail transportation, and a wide variety of general industrial applications and so on

As per packing of 904L flanges, we will use  Veneer Case or Plywood Case
Please send us the drawing of 904L flanges, we are glad to quote the best price for your side.
Except 904L flanges,we also could produce 904L bars,904L plates,904L fasteners,904L bolts,904L pipe fittings,904L pipes,904L tubes,904L springs