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Alloy 31 Flanges
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We produce Alloy 31 flanges,Alloy31 flanges,Alloy 31 Blind Flanges,Alloy 31 Welding Neck Flanges,Alloy 31 Slip On Flanges,Alloy 31 Socket Welding Flanges,Alloy 31 Lap joint Flanges,Alloy 31 Ring joint Flanges,Alloy 31 Slip-on flanges,Alloy 31 Weld Neck Flanges,Alloy 31 WN flanges,Alloy 31 LWN flanges, Alloy 31 Long weld neck flanges,Alloy 31 orifice flanges,Alloy 31 Spectacle blind Flanges,Alloy31 Spectacle flanges, Alloy31 spacer ring flanges,Alloy 31 Swivel Ring Flanges,Alloy 31 WNRF Flanges,Alloy 31 SORF Flanges,Alloy 31 SWRF Flanges,Alloy 31 Threaded Flanges,Alloy 31 Ring Type Joint Flanges,Alloy 31 BLRF Flanges,Alloy 31 RTJ Flanges from china

The size of Alloy 31 flanges that we could do is from 1/2” – 96”, DN15-DN2000

We could produce Alloy 31 flanges with pressre from 150LB-2500LB or PN6-PN100

The face of Alloy 31 flanges that we could do is in Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Also we could produce Alloy 31 flanges as per the drawing of the clients

Following is the standard of Alloy 31 flanges that we could do:

American standard of Alloy 31 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 Alloy 31 flanges in DIN 2630,2631,2632,2633,2634,2635,2636,2637,2638,2501(WN);

DIN2573,2576,2527,2655,2656(PL);DIN2566.

British standard of Alloy 31 flanges in BS3293,BS4504,BS10

The Italy standard of Alloy31 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 Alloy 31 flanges in JIS B27620,

Korean Standard of Alloy 31 flanges in KSB 1503,KSB 6216,KSB 2332,KSB 2333,KSD 3578,KSD 4308.

Australian standard of Alloy 31 flanges in AS 4087,AS 2129,AS/NZS 4331.1

ISO standsard of Alloy 31 flanges in ISO 7005-1,ISO 9624

Russian standard of Alloy 31 flanges in GOST 12820,GOST 12821,GOST 12836,GOST 12820-80,GOST 12821-80,GOST 12836-80.

European standard of Alloy31 flanges in EN1092-1

South african standard of Alloy 31 flanges in SABS-1123/SANS-1123

As per surface treatment of Alloy31 flange, we could do Anti-rust Oil;Black /Yellow Paint;Hot-dipped Galvanization as per the requirement of the clients

The material grade of Alloy31 flanges is by forging as per the standard of ASTM B637.

We could do solution treatment, ageing treatment for Alloy 31 flanges as per the requirement of the clients

Alloy 31 has very good corrosion resistance in mixed acid and high chloride environments

The chemical composition of Alloy 31 flanges is as follows

Element

Maximum

Carbon

0,015

Manganese

2,0

Phosphorus

0,020

Sulfur

0,010

Silicon

0,30

Nickel

30,0-32,0

Chrome

26,0-28,0

Molybdenum

6,0-7,0

Nitrogen

0,15-0,25

Copper

1,0-1,4

Iron

Balance


The mechanical property of Alloy 31 flanges is as follows

Norm

Rm min.

Rp 0,2% min.

E4d min.%

Z min.%

T.I.(J)

HR B

HB

Alloy 31Plate

94 (650)

40 (276)

40


In order to control the quanlity of Alloy 31 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 Alloy 31 flanges  as per the standard of EN10204-3.1 or EN10204-3.2 of third party(like TUV,DNV,GL and so on)

Our Alloy 31 flanges will be 100% Ultrasonic Inspection as per the forging parts UT Test standard of ASTM A 388 or EN102768.

Our Alloy 31 flanges are widely used in many industries,such as Heat shields,Combustion and chimney liners,Valves,Piping,Distillation columns,Bubble caps,Reaction vessels Heat exchangers,Furnace,Gas turbine engine duct work,Equipment used to produce acid and so on

As per packing of Alloy 31 flanges, we will use  Veneer Case or Plywood Case

Please send us the drawing of Alloy 31 flanges, we are glad to quote the best price for your side.

Except Alloy 31 flanges,we also could produce Alloy 31 bars,Alloy 31 plates,Alloy 31 fastener,Alloy 31 bolts,Alloy 31 pipe fittings,Alloy 31 pipes,Alloy 31 tubes,Alloy 31 springs