317L Flanges
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We produce 317L flanges,317 L flanges,317L Blind Flanges,317L Welding Neck Flanges,317L Slip On Flanges,317L Socket Welding Flanges,317L Lap joint Flanges,317L Ring joint Flanges,317L Slip-on flanges,317L Weld Neck Flanges,317L WN flanges,317L LWN flanges, 317L Long weld neck flanges,Nimonic 90 orifice flanges,317L Spectacle blind Flanges,317 L Spectacle flanges, 317 L spacer ring flanges,317L Swivel Ring Flanges,317L WNRF Flanges,317L SORF Flanges,317L SWRF Flanges,317L Threaded Flanges,317L Ring Type Joint Flanges,317L BLRF Flanges,317L RTJ Flanges from china

The size of 317L flanges that we could do is from 1/2” – 96”, DN15-DN2000

We could produce 317L flanges with pressre from 150LB-2500LB or PN6-PN100

The face of 317L flanges that we could do is in Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Also we could produce 317L flanges as per the drawing of the clients

Following is the standard of 317L flanges that we could do:

American standard of 317L 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 317L flanges in DIN 2630,2620,2632,2633,2634,2635,2636,2637,2638,2501(WN);


British standard of 317L flanges in BS3293,BS4504,BS10

The Italy standard of 317 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 317L flanges in JIS B27620,

Korean Standard of 317L flanges in KSB 1503,KSB 6216,KSB 2332,KSB 2333,KSD 3578,KSD 4308.

Australian standard of 317L flanges in AS 4087,AS 2129,AS/NZS 4320.1

ISO standsard of 317L flanges in ISO 7005-1,ISO 9624

Russian standard of 317L flanges in GOST 12820,GOST 12821,GOST 12836,GOST 12820-80,GOST 12821-80,GOST 12836-80.

European standard of 317 L flanges in EN1092-1

South african standard of 317L flanges in SABS-1123/SANS-1123

As per surface treatment of 317 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 317 L flanges is by forging as per the standard of ASTM B462.

We could do solution treatment, ageing treatment for 317L flanges as per the requirement of the clients

317L is a molybdenum bearing, low carbon content "L" grade austenitic stainless steel

The chemical composition of 317L flanges is as follows

ChemicalComposition, %






11.0  - 15.0

18.0  - 20.0

3.0  - 4.0

2.0  Max

.75  Max






0.03  Max

0.1 Max

0.03  Max

0.045  Max


The mechanical property of 317L flanges is as follows

Minimum Specified Properties

Ultimate Tensile Strength, MPA  Minimum

.2% Yield Strength, MPA Minimum

Elongation Percent

Hardness Max.




217  Brinell

In order to control the quanlity of 317L 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 317L flanges  as per the standard of EN10204-3.1 or EN10204-3.2 of third party(like TUV,DNV,GL and so on)

Our 317L flanges will be 100% Ultrasonic Inspection as per the forging parts UT Test standard of ASTM A 388 or EN102768.

Our 317L flanges are widely used in many industries,such as Drilling & Boring Equipment ,Wellhead Manufacture,Repair or Servicing Companies,Pipeline Construction & Repair.Pumping & Refining Equipment,Oil Extraction Systems,Oil Rig Construction,Repair & Maintenance Subcontractors ,Upstream, Midstream or Downstream Service Providers .Isolation Valves & Choke Equipment Manufacturers,Submersible Watercraft and so on

As per packing of 317L flanges, we will use  Veneer Case or Plywood Case

Please send us the drawing of 317L flanges, we are glad to quote the best price for your side.

Except 317L flanges,we also could produce 317L bars,317L plates,317L fasteners,317L bolts,317L pipe fittings,317L pipes,317L tubes,317L springs