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Stainless Steel Threaded Flange


Standard:ASTM A182

ASTM A182: The standard for alloy and stainless threaded flanges. Common alloy grades: F5, F9, F11, F22, F91; Stainless steel grades: F304, 304/, F316, F316L.
Size: ½” (15 NB) to 48″ (1200NB)

Type: Threaded

Pressure ratings: 150#, 300#, 600#, 900#, 1500#, 2500#

Materials: Stainless Steel:

304/304L, 316/316L, 304H, 316H, 309, 310S, 317L, 321/321H, 347/347H, 904L, DUPLEX 2205 / SUPER DUPLEX 2507

Standards: SANSI B16.15, ANSI B16.47, MSS SP-44, API6A, API 17D, Manufacturer Standard etc.

Stainless Steel Threaded Flange is connecting with pipe without welding. It is similar to slip on flange or a socket weld flange, fitted with a tapered thread (screw) inside the flange bore that is mounted on the pipe with corresponding external threads. In some cases a seal weld also applied in conjunction with threaded pipe flange.

Though threaded pipe flange is available in different dimensions, threaded fittings mostly is used in small diameters pipeline. (Below 4 inch normally.)

On the other hand, it is not compatible with a pipe system in thin wall thickness, since there is no space for doing the threading.

1.Threaded flange 2.Thread 3.Pipe or Fitting


Flat Face

Raised Face

Ring Type Joint

ANSI 150

THD Flange ANSI 150 FF (in)

THD Flange ANSI 150 RF (in)

THD Flange ANSI 150 RTJ (in)

ANSI 300

THD Flange ANSI 300 FF (in)

THD Flange ANSI 300 RF (in)

THD Flange ANSI 300 RTJ (in)

ANSI 400

THD Flange ANSI 400 FF (in)

THD Flange ANSI 400 RF (in)

THD Flange ANSI 400 RTJ (in)

ANSI 600

THD Flange ANSI 600 FF (in)

THD Flange ANSI 600 RF (in)

THD Flange ANSI 600 RTJ (in)

ANSI 900

THD Flange ANSI 900 FF (in)

THD Flange ANSI 900 RF (in)

THD Flange ANSI 900 RTJ (in)

ANSI 1500

THD Flange ANSI 1500 FF (in)

THD Flange ANSI 1500 RF (in)

THD Flange ANSI 1500 RTJ (in)

ANSI 2500

THD Flange ANSI 2500 FF (in)

THD Flange ANSI 2500 RF (in)

THD Flange ANSI 2500 RTJ (in)

The datasheets we have on this site are shown below. For simplicity sake, only datasheets that adhere to B16.5 are shown. ASME B16.5 covers flange dimensions from ½” to 24”. For sizes larger than this, please visit our flange datasheets page.

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