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CNC Machining Flanges / CNC Machining Parts / CNC Machining Threaded Flange

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Threaded Flange

Standard ASME/ANSI, BS, JIS, GB, AS
Size range: 1/2" - 56" (DN15 to DN1,400)
Pressure range: 150~1500LB(PN2.5~400)
Material: Special Alloy, Super Duplex Stainless Steel, Stainless Steel, Carbon Steel, Titanium
Flange Facing Types: Flat face(FF),Raised face(RF),Tongue(T),Groove(G),Female(F),Male(M),Ring type joints face(RJ/RTJ)
Used in: Oil, Offshore, Water, Ship, Natural Gas, Power, Pipe Projects etc

INQUIRY
  • PRODUCT DETAIL
  • Material

Threaded Flanges (TH Flanges) are similar to slip-on flanges in outline, but the bore is threaded, thus enabling assembly without welding. This obviously limits its application to relatively low pressure piping systems. Threaded Flanges may be welded around the joint after assembly, but this is not considered a satisfactory method of increasing the flanges’ pressure applications.

Acero has 3 warehouses in Wenzhou, Wuxi and Hebei. As one of the piping solution providers, Acero has been committed to providing one-stop solutions for projects in the fields of oil and gas, water, renewable energy and infrastructure. With years’ consistent dedication and innovation, our reliable, cost-effective and environment-friendly solutions have won clients’ wide recognition.

China Threaded Flange manufacturer Acero supplies Threaded Flanges, Thread Fittings, Threaded Pipe Flanges in forged steel, Stainless Steel, alloy steel, etc.

Size
1/2″ – 56″ (DN15 to DN1,400)
Pressure
America Series:Class 150 ,Class 300, Class 600, Class 900A ,Class 1500,Class 2500.
Europe Series:PN2.5,PN6,PN10,PN16,PN25,PN40,PN63,PN100,PN160,PN250,PN320,PN400.
Flange Facing Types
America Series:Flat face(FF),Raised face(RF),Tongue(T),Groove(G),Female(F),Male(M),Ring type joints face(RJ/RTJ)
Europe Series:Type A(Flat Face),Type B(Raised Face),Type C(Tongue),Type D(Groove),Type E(Spigot),Type F(Recess),Type G(O-Ring Spigot),Type H(O-Ring Groove)
Material
Carbon steel: ASTM A105,ASTM A105N,GB 20,C22.8.
Alloy steel: ASTM/ASME A182 F1-F12-F11-F22- F5-F9- F91
Stainless steel: ASTM/ASME A182 F304-304L-304H-304LN-304N
ASTM/ASME A182 F316-316L-316H-316LN-316N-316Ti
ASTM/ASME A182 F321-321H, F347-347H
Low temperature steel: ASTM/ASME A350 LF2.
High performance steel: ASTM/ASME A694 F42 , F52, F56, F60, F65, F70
Standards
ASME ANSI B16.5,ASME ANSI B16.47.
API 605,API 6L.
MSS SP 44
CSA Z245.12
EN1092-1,EN1759-1.
DIN2565, DIN2566, DIN2567, DIN2568, DIN2569
BS1560,BS 4504,BS 10.
AFNOR NF E29-200-1
ISO7005-1
AS2129
JIS B2220
UNI 2276. UNI 2277.UNI 2278 .UNI 6089 .UNI 6090

Threaded flange dimensions are covered in ASME B16.5 – which covers Pipe Flanges and Flanged Fittings for size NPS ½” to 24” for above NPS 26” to 60” it should be as per ASME B16.47.

During dimensional inspection of flange, you should check for

  • Outer & Inner Diameter of body
  • Bolt Circle & Bolt Hole Diameter
  • Length of the Hub
  • Straightness and alignment of the bolt hole

THREADED CLASS 150

Threaded flange dimensions class 150 in inches (ASME B16.5)

threaded flange dimension - Threaded Flange

FLANGE
NPS 		Inside
Diameter 		Outside
Diameter 		Bolt Circle (BC) Raised Face (R) Raised Face (RF) H Raised Face Thickness (T) T1 Flat Face Thickness (T2) Bolt Hole (B) No. of Bolt Holes
1/2″ 0.93″ 3.50″ 2.38″ 1.38″ .063″ 1.19″ .62″ .38″ .56″ .62″ 4
3/4″ 1.14″ 3.88″ 2.75″ 1.69″ .063″ 1.50″ .62″ .44″ .56″ .62″ 4
1″ 1.41″ 4.25″ 3.12″ 2.00″ .063″ 1.94″ .69″ .50″ .63″ .62″ 4
1-1/4″ 1.75″ 4.62″ 3.50″ 2.50″ .063″ 2.31″ .81″ .56″ .75″ .62″ 4
1-1/2″ 1.99″ 5.00″ 3.88″ 2.88″ .063″ 2.56″ .88″ .62″ .82″ .62″ 4
2″ 2.50″ 6.00″ 4.75″ 3.62″ .063″ 3.06″ 1.00″ .69″ .94″ .75″ 4
2-1/2″ 3.00″ 7.00″ 5.50″ 4.12″ .063″ 3.56″ 1.12″ .82″ 1.06″ .75″ 4
3″ 3.63″ 7.50″ 6.00″ 5.00″ .063″ 4.25″ 1.19″ .88″ 1.13″ .75″ 4
3-1/2″ 4.13″ 8.50″ 7.00″ 5.50″ .063″ 4.81″ 1.25″ .88″ 1.19″ .75″ 8
4″ 4.63″ 9.00″ 7.50″ 6.19″ .063″ 5.31″ 1.31″ .88″ 1.25″ .75″ 8
5″ 5.69″ 10.00″ 8.50″ 7.31″ .063″ 6.44″ 1.44″ .88″ 1.38″ .88″ 8
6″ 6.75″ 11.00″ 9.50″ 8.50″ .063″ 7.56″ 1.56″ .94″ 1.50″ .88″ 8
8″ 8.75″ 13.50″ 11.75″ 10.62″ .063″ 9.69″ 1.75″ 1.06″ 1.69″ .88″ 8
10″ 10.88″ 16.00″ 14.25″ 12.75″ .063″ 12.00″ 1.94″ 1.13″ 1.88″ 1.00″ 12
12″ 12.94″ 19.00″ 17.00″ 15.00″ .063″ 14.38″ 2.19″ 1.19″ 2.13″ 1.00″ 12
14″ 14.19″ 21.00″ 18.75″ 16.25″ .063″ 15.75″ 2.25″ 1.32″ 2.19″ 1.12″ 12
16″ 16.19″ 23.50″ 21.25″ 18.50″ .063″ 18.00″ 2.50″ 1.38″ 2.44″ 1.12″ 16
18″ 18.19″ 25.00″ 22.75″ 21.00″ .063″ 19.88″ 2.69″ 1.50″ 2.63″ 1.25″ 16
20″ 20.19″ 27.50″ 25.00″ 23.00″ .063″ 22.00″ 2.88″ 1.63″ 2.83″ 1.25″ 20
22″ 22.19″ 29.50″ 27.25″ 25.25″ .063″ 24.25″ 3.13″ 1.75″ 3.07″ 1.38″ 20
24″ 24.19″ 32.00″ 29.50″ 27.25″ .063″ 26.12″ 3.25″ 1.82″ 3.19″ 1.38″ 20

THREADED CLASS 300

Threaded flange dimensions class 300 in inches (ASME B16.5)

threaded flange dimension - Threaded Flange

FLANGE
NPS 		Inside
Diameter 		Outside
Diameter 		Bolt Circle (BC) Raised Face (R) Raised Face (RF) H Raised Face Thickness (T) T1 Flat Face Thickness (T2) Bolt Hole (B) No. of Bolt Holes
1/2″ 0.93″ 3.75″ 2.62″ 1.38″ .063″ 1.50″ 0.88″ 0.50″ 0.82″ 0.62″ 4
3/4″ 1.14″ 4.62″ 3.25″ 1.69″ .063″ 1.88″ 1.00″ .056″ 0.94″ 0.75″ 4
1″ 1.41″ 4.88″ 3.50″ 2.00″ .063″ 2.12″ 1.06″ 0.63″ 1.00″ 0.75″ 4
1-1/4″ 1.75″ 5.25″ 3.88″ 2.50″ .063″ 2.50″ 1.06″ 0.69″ 1.00″ 0.75″ 4
1-1/2″ 1.99″ 6.12″ 4.50″ 2.88″ .063″ 2.75″ 1.19″ 0.75″ 1.13″ 0.88″ 4
2″ 2.50″ 6.50″ 5.00″ 3.62″ .063″ 3.31″ 1.31″ 0.82″ 1.25″ 0.75″ 8
2-1/2″ 3.00″ 7.50″ 5.88″ 4.12″ .063″ 3.94″ 1.50″ 0.94″ 1.44″ 0.88″ 8
3″ 3.63″ 8.25″ 6.62″ 5.00″ .063″ 4.62″ 1.69″ 1.06″ 1.63″ 0.88″ 8
3-1/2″ 4.13″ 9.00″ 7.25″ 5.50″ .063″ 5.25″ 1.75″ 1.13″ 1.69″ 0.88″ 8
4″ 4.63″ 10.00″ 7.88″ 6.19″ .063″ 5.75″ 1.88″ 1.19″ 1.82″ 0.88″ 8
5″ 5.69″ 11.00″ 9.25″ 7.31″ .063″ 7.00″ 2.00″ 1.32″ 1.94″ 0.88″ 8
6″ 6.75″ 12.50″ 10.62″ 8.50″ .063″ 8.12″ 2.06″ 1.38″ 2.00″ 0.88″ 12
8″ 8.75″ 15.00″ 13.00″ 10.62″ .063″ 10.25″ 2.44″ 1.56″ 2.38″ 1.00″ 12
10″ 10.88″ 17.50″ 15.25″ 12.75″ .063″ 12.62″ 2.62″ 1.82″ 2.56″ 1.12″ 16
12″ 12.94″ 20.50″ 17.75″ 15.00″ .063″ 14.75″ 2.88″ 1.94″ 2.82″ 1.25″ 16
14″ 14.19″ 23.00″ 20.25″ 16.25″ .063″ 16.75″ 3.00″ 2.06″ 2.94″ 1.25″ 20
16″ 16.19″ 25.50″ 22.50″ 18.50″ .063″ 19.00″ 3.25″ 2.19″ 3.19″ 1.38″ 20
18″ 18.19″ 28.00″ 24.75″ 21.00″ .063″ 21.00″ 3.50″ 2.32″ 3.44″ 1.38″ 24
20″ 20.19″ 30.50″ 27.00″ 23.00″ .063″ 23.12″ 3.75″ 2.44″ 3.69″ 1.38″ 24
22″ 22.19″ 33.00″ 29.25″ 25.25″ .063″ 25.25″ 4.00″ 2.57″ 3.94″ 1.63″ 24
24″ 24.19″ 36.00″ 32.00″ 27.25″ .063″ 27.62″ 4.19″ 2.69″ 4.13″ 1.62″ 24

THREADED CLASS 400

Threaded flange dimensions class 400 in inches (ASME B16.5)

threaded flange dimension - Threaded Flange

FLANGE
NPS 		Inside
Diameter 		Outside
Diameter 		Bolt Circle (BC) Raised Face (R) Raised Face (RF) H Raised Face Thickness (T) T1 Flat Face Thickness (T2) Bolt Hole (B) No. of Bolt Holes
1/2″ 0.93″ 3.75″ 2.62″ 0.12″ .250″ 1.50″ 1.13″ 0.56″ 0.88″ 0.62″ 4
3/4″ 1.14″ 4.62″ 3.25″ 0.12″ .250″ 1.88″ 1.25″ 0.62″ 1.00″ 0.75″ 4
1″ 1.41″ 4.88″ 3.50″ 0.12″ .250″ 2.12″ 1.31″ 0.69″ 1.06″ 0.75″ 4
1-1/4″ 1.75″ 5.25″ 3.88″ 0.19″ .250″ 2.50″ 1.37″ 0.81″ 1.12″ 0.75″ 4
1-1/2″ 1.99″ 6.12″ 4.50″ 0.25″ .250″ 2.75″ 1.50″ 0.88″ 1.25″ 0.88″ 4
2″ 2.50″ 6.50″ 5.00″ 0.31″ .250″ 3.31″ 1.69″ 1.00″ 1.44″ 0.75″ 8
2-1/2″ 3.00″ 7.50″ 5.88″ 0.31″ .250″ 3.94″ 1.87″ 1.12″ 1.62″ 0.88″ 8
3″ 3.63″ 8.25″ 6.62″ 0.38″ .250″ 4.62″ 2.06″ 1.25″ 1.81″ 0.88″ 8
3-1/2″ 4.13″ 9.00″ 7.25″ 0.38″ .250″ 5.25″ 2.19″ 1.38″ 1.94″ 1.00″ 8
4″ 4.63″ 10.00″ 7.88″ 0.44″ .250″ 5.75″ 2.25″ 1.38″ 2.00″ 1.00″ 8
5″ 5.69″ 11.00″ 9.25″ 0.44″ .250″ 7.00″ 2.37″ 1.50″ 2.12″ 1.00″ 8
6″ 6.75″ 12.50″ 10.62″ 0.50″ .250″ 8.12″ 2.50″ 1.62″ 2.25″ 1.00″ 12
8″ 8.75″ 15.00″ 13.00″ 0.50″ .250″ 10.25″ 2.94″ 1.88″ 2.69″ 1.12″ 12
10″ 10.88″ 17.50″ 15.25″ 0.50″ .250″ 12.62″ 3.13″ 2.12″ 2.88″ 1.25″ 16
12″ 12.94″ 20.50″ 17.75″ 0.50″ .250″ 14.75″ 3.37″ 2.25″ 3.12″ 1.38″ 16
14″ 14.19″ 23.00″ 20.25″ 0.50″ .250″ 16.75″ 3.56″ 2.38″ 3.31″ 1.38″ 20
16″ 16.19″ 25.50″ 22.50″ 0.50″ .250″ 19.00″ 3.94″ 2.50″ 3.69″ 1.50″ 20
18″ 18.19″ 28.00″ 24.75″ 0.50″ .250″ 21.00″ 4.13″ 2.62″ 3.88″ 1.50″ 24
20″ 20.19″ 30.50″ 27.00″ 0.50″ .250″ 23.12″ 4.25″ 2.75″ 4.00″ 1.62″ 24
22″ 22.19″ 33.00″ 29.25″ 0.50″ .250″ 25.25″ 4.50″ 2.88″ 4.25″ 1.75″ 24
24″ 24.19″ 36.00″ 32.00″ 0.50″ .250″ 27.62″ 4.75″ 3.00″ 4.50″ 1.88″ 24

THREADED CLASS 600

Threaded flange dimensions class 600 in inches (ASME B16.5)

threaded flange dimension - Threaded Flange

FLANGE
NPS 		Inside
Diameter 		Outside
Diameter 		Bolt Circle (BC) Raised Face (R) Raised Face (RF) H Raised Face Thickness (T) T1 Flat Face Thickness (T2) Bolt Hole (B) No. of Bolt Holes
1/2″ 0.93″ 3.75″ 2.62″ 1.38″ .250″ 1.50″ 1.13″ 0.56″ 0.88″ 0.62″ 4
3/4″ 1.14″ 4.62″ 3.25″ 1.69″ .250″ 1.88″ 1.25″ 0.62″ 1.00″ 0.75″ 4
1″ 1.41″ 4.88″ 3.50″ 2.00″ .250″ 2.12″ 1.31″ 0.69″ 1.06″ 0.75″ 4
1-1/4″ 1.75″ 5.25″ 3.88″ 2.50″ .250″ 2.50″ 1.37″ 0.81″ 1.12″ 0.75″ 4
1-1/2″ 1.99″ 6.12″ 4.50″ 2.88″ .250″ 2.75″ 1.50″ 0.88″ 1.25″ 0.88″ 4
2″ 2.50″ 6.50″ 5.00″ 3.62″ .250″ 3.31″ 1.69″ 1.00″ 1.44″ 0.75″ 8
2-1/2″ 3.00″ 7.50″ 5.88″ 4.12″ .250″ 3.94″ 1.87″ 1.12″ 1.62″ 0.88″ 8

THREADED CLASS 900

Threaded flange dimensions class 900 in inches (ASME B16.5)

threaded flange dimension - Threaded Flange

FLANGE
NPS 		Inside
Diameter 		Outside
Diameter 		Bolt Circle (BC) Raised Face (R) Raised Face (RF) H Raised Face Thickness (T) T1 Flat Face Thickness (T2) Bolt Hole (B) No. of Bolt Holes
1/2″ 0.93″ 4.75″ 3.25″ 1.38″ .250″ 1.50″ 1.50″ 0.88″ 1.25″ 0.88″ 4
3/4″ 1.14″ 5.13″ 3.50″ 1.69″ .250″ 1.75″ 1.63″ 1.00″ 1.38″ 0.88″ 4
1″ 1.41″ 5.88″ 4.00″ 2.00″ .250″ 2.06″ 1.88″ 1.13″ 1.63″ 1.00″ 4
1-1/4″ 1.75″ 6.25″ 4.38″ 2.50″ .250″ 2.50″ 1.88″ 1.13″ 1.63″ 1.00″ 4
1-1/2″ 1.99″ 7.00″ 4.88″ 2.88″ .250″ 2.75″ 2.00″ 1.25″ 1.75″ 1.13″ 4
2″ 2.50″ 8.50″ 6.50″ 3.63″ .250″ 4.13″ 2.50″ 1.50″ 2.25″ 1.00″ 8
2-1/2″ 3.00″ 9.63″ 7.50″ 4.13″ .250″ 4.88″ 2.75″ 1.63″ 2.50″ 1.13″ 8
3″ 3.63″ 9.50″ 7.50″ 5.00″ .250″ 5.00″ 2.38″ 1.50″ 2.13″ 1.00″ 8
4″ 4.63″ 11.50″ 9.25″ 6.19″ .250″ 6.25″ 3.00″ 1.75″ 2.75″ 1.25″ 8
5″ 5.69″ 13.75″ 11.00″ 7.31″ .250″ 7.50″ 3.38″ 3.00″ 3.13″ 1.38″ 8
6″ 6.75″ 15.00″ 12.50″ 8.50″ .250″ 9.25″ 3.63″ 2.19″ 3.38″ 1.25″ 12
8″ 8.75″ 18.50″ 15.50″ 10.63″ .250″ 11.75″ 4.25″ 2.50″ 4.00″ 1.50″ 12
10″ 10.88″ 21.50″ 18.50″ 12.75″ .250″ 14.50″ 4.50″ 2.75″ 4.25″ 1.50″ 16
12″ 12.94″ 24.00″ 21.00″ 15.00″ .250″ 16.50″ 4.88″ 3.13″ 4.63″ 1.50″ 20
14″ 14.19″ 25.25″ 22.00″ 16.25″ .250″ 17.75″ 5.38″ 3.38″ 5.13″ 1.63″ 20
16″ 16.19″ 27.75″ 24.25″ 18.50″ .250″ 20.00″ 5.50″ 3.50″ 5.25″ 1.75″ 20
18″ 18.19″ 31.00″ 27.00″ 21.00″ .250″ 22.25″ 6.25″ 4.00″ 6.00″ 2.00″ 20
20″ 20.19″ 33.75″ 29.50″ 23.00″ .250″ 24.50″ 6.50″ 4.25″ 6.25″ 2.13″ 20
24″ 24.19″ 41.00″ 35.50″ 27.25″ .250″ 29.50″ 8.25″ 5.50″ 8.00″ 2.63″ 20

THREADED CLASS 1500

Threaded flange dimensions class 1500 in inches (ASME B16.5)

threaded flange dimension - Threaded Flange

FLANGE
NPS 		Inside
Diameter 		Outside
Diameter 		Bolt Circle (BC) Raised Face (R) Raised Face (RF) H Raised Face Thickness (T) T1 Flat Face Thickness (T2) Bolt Hole (B) No. of Bolt Holes
1/2″ 0.93″ 4.75″ 3.25″ 1.38″ .250″ 1.50″ 1.50″ 0.88″ 1.25″ 0.88″ 4
3/4″ 1.14″ 5.13″ 3.50″ 1.69″ .250″ 1.75″ 1.63″ 1.00″ 1.38″ 0.88″ 4
1″ 1.41″ 5.88″ 4.00″ 2.00″ .250″ 2.06″ 1.88″ 1.13″ 1.63″ 1.00″ 4
1-1/4″ 1.75″ 6.25″ 4.38″ 2.50″ .250″ 2.50″ 1.88″ 1.13″ 1.63″ 1.00″ 4
1-1/2″ 1.99″ 7.00″ 4.88″ 2.88″ .250″ 2.75″ 2.00″ 1.25″ 1.75″ 1.13″ 4
2″ 2.50″ 8.50″ 6.50″ 3.63″ .250″ 4.13″ 2.50″ 1.50″ 2.25″ 1.00″ 8
2-1/2″ 3.00″ 9.63″ 7.50″ 4.13″ .250″ 4.88″ 2.75″ 1.63″ 2.50″ 1.13″ 8

THREADED CLASS 2500

Threaded flange dimensions class 2500 in inches (ASME B16.5)

threaded flange dimension - Threaded Flange

FLANGE
NPS 		Inside
Diameter 		Outside
Diameter 		Bolt Circle (BC) Raised Face (R) Raised Face (RF) H Raised Face Thickness (T) T1 Flat Face Thickness (T2) Bolt Hole (B) No. of Bolt Holes
1/2″ 0.93″ 5.25″ 3.50″ 1.38″ .250″ 1.69″ 1.81″ 1.19″ 1.56″ 0.88″ 4
3/4″ 1.14″ 5.50″ 3.75″ 1.69″ .250″ 2.00″ 1.94″ 1.25″ 1.69″ 0.88″ 4
1″ 1.41″ 6.25″ 4.25″ 2.00″ .250″ 2.25″ 2.13″ 1.38″ 1.88″ 1.00″ 4
1-1/4″ 1.75″ 7.25″ 5.13″ 2.50″ .250″ 2.88″ 2.31″ 1.50″ 2.06″ 1.13″ 4
1-1/2″ 1.99″ 8.00″ 5.75″ 2.88″ .250″ 3.13″ 2.63″ 1.75″ 2.38″ 1.25″ 4
2″ 2.50″ 9.25″ 6.75″ 3.63″ .250″ 3.75″ 3.00″ 2.00″ 2.75″ 1.13″ 8
2-1/2″ 3.00″ 10.50″ 7.75″ 4.13″ .250″ 4.50″ 3.38″ 2.25″ 3.13″ 1.25″ 8

THREADED FLANGE DIMENSIONS IN MILLIMETERS

THREADED CLASS 150

Threaded flange dimensions class 150 in millimeters (ASME B16.5)

threaded flange dimensions - Threaded Flange

Size
inch 		D
mm 		X
mm 		G
mm 		t
mm 		T2
mm 		Q
mm
1/2 89 30.2 35.1 11.2 15.7 15.7
3/4 99 38.1 42.9 12.7 15.7 15.7
1 108 49.3 50.8 14.2 17.5 17.5
1¼ 117 58.7 63.5 15.7 20.6 20.6
1½ 127 65.0 73.2 17.5 22.4 22.4
2 152 77.7 91.9 19.1 25.4 25.4
2½ 178 90.4 104.6 22.4 28.4 28.4
3 191 108.0 127.0 23.9 30.2 30.2
3½ 216 122.2 139.7 23.9 31.8 31.8
4 229 134.9 157.2 23.9 33.3 33.3
5 254 163.6 185.7 23.9 36.6 36.6
6 279 192.0 215.9 25.4 39.6 39.6
8 343 246.1 269.7 28.4 44.5 44.5
10 406 304.8 323.9 30.2 49.3 49.3
12 483 365.3 381.0 31.8 55.6 55.6
14 533 400.1 412.8 35.1 57.2 57.2
16 597 457.2 469.9 36.6 63.5 63.5
18 635 505.0 533.4 39.6 68.3 68.3
20 699 558.8 584.2 42.9 73.2 73.2
24 813 663.4 692.2 47.8 82.6 82.6

 

Size Bolts Drilling Bolting Requirements
inch Bolt circle
Diameter mm 		Holes # Holes Dia. mm Bolt Dia. inch. Length
FF Flange 		Length
RF Flange 		Length
RTJ Flange
1/2 60.5 4 15.7 1/2 50.8 57.2 –
3/4 69.9 4 15.7 1/2 50.8 63.5 –
1 79.2 4 15.7 1/2 57.2 63.5 76.2
1¼ 88.9 4 15.7 1/2 57.2 69.9 82.6
1½ 98.6 4 15.7 1/2 63.5 69.9 82.6
2 120.7 4 19.1 5/8 69.9 82.6 95.3
2½ 139.7 4 19.1 5/8 76.2 88.9 101.6
3 152.4 4 19.1 5/8 76.2 88.9 101.6
3½ 177.8 8 19.1 5/8 76.2 88.9 101.6
4 190.5 8 19.1 5/8 76.2 88.9 101.6
5 215.9 8 22.4 3/4 82.6 95.3 108.0
6 241.3 8 22.4 3/4 82.6 101.6 114.3
8 298.5 8 22.4 3/4 88.9 108.0 120.7
10 362.0 12 25.4 7/8 101.6 114.3 127.0
12 431.8 12 25.4 7/8 101.6 120.7 133.4
14 476.3 12 28.4 1 114.3 133.4 146.1
16 539.8 16 28.4 1 114.3 133.4 146.1
18 577.9 16 31.8 11/8 127.0 146.1 158.8
20 635.0 20 31.8 11/8 139.7 158.8 171.5
24 749.3 20 35.1 1¼ 152.4 171.5 184.2

THREADED CLASS 300

Threaded flange dimensions class 300 in millimeters (ASME B16.5)

threaded flange dimensions - Threaded Flange

Size
inch 		D
mm 		X
mm 		G
mm 		t
mm 		B
mm 		T2
mm 		Q
mm
1/2 95 38.1 35.1 14.2 23.6 22.4 15.7
3/4 117 47.8 42.9 15.7 29.0 25.4 15.7
1 124 53.8 50.8 17.5 35.8 26.9 17.5
1¼ 133 63.5 63.5 19.1 44.5 26.9 20.6
1½ 155 69.9 73.2 20.6 50.5 30.2 22.4
2 165 84.1 91.9 22.4 63.5 33.3 28.4
2½ 191 100.1 104.6 25.4 76.2 38.1 31.8
3 210 117.3 127.0 28.4 92.2 42.9 31.8
3½ 229 133.4 139.7 30.2 104.9 44.5 36.6
4 254 146.1 157.2 31.8 117.6 47.8 36.6
5 279 177.8 185.7 35.1 144.5 50.8 42.9
6 318 206.2 215.9 36.6 171.5 52.3 46.0
8 381 260.4 269.7 41.1 222.3 62.0 50.8
10 445 320.5 323.9 47.8 276.4 66.5 55.6
12 521 374.7 381.0 50.8 328.7 73.2 60.5
14 584 425.5 412.8 63.8 360.4 76.2 63.5
16 648 482.6 469.9 57.2 411.2 82.6 68.3
18 711 533.4 533.4 60.5 462.0 88.9 69.9
20 775 587.2 584.2 63.5 512.8 95.3 73.2
24 914 701.5 692.2 69.9 614.4 106.4 82.6

 

Size Bolts Drilling Bolting Requirements
inch Bolt circle
Diameter mm 		Holes # Holes Dia. mm Bolt Dia. inch. Length
FF Flange 		Length
RF Flange 		Length
RTJ Flange
1/2 66.5 4 15.7 1/2 57.2 63.5 76.2
3/4 82.6 4 19.1 5/8 63.5 76.2 88.9
1 88.9 4 19.1 5/8 63.5 76.2 88.9
1¼ 98.6 4 19.1 5/8 69.9 82.6 95.3
1½ 114.3 4 22.4 3/4 76.2 88.9 101.6
2 127.0 8 19.1 5/8 76.2 88.9 101.6
2½ 149.4 8 22.4 3/4 82.6 101.6 114.3
3 168.1 8 22.4 3/4 88.9 108.0 120.7
3½ 184.2 8 22.4 3/4 95.3 108.0 127.0
4 200.2 8 22.4 3/4 95.3 114.3 127.0
5 235.0 8 22.4 3/4 108.0 120.7 133.4
6 269.7 12 22.4 3/4 108.0 120.7 139.7
8 330.2 12 25.4 7/8 120.7 139.7 152.4
10 387.4 16 28.4 1 139.7 158.8 171.5
12 450.9 16 31.8 11/8 146.1 171.5 184.2
14 514.4 20 31.8 11/8 158.8 177.8 190.5
16 571.5 20 35.1 1¼ 165.1 190.5 203.2
18 628.7 24 35.1 1¼ 171.5 196.9 209.6
20 685.8 24 35.1 1¼ 184.2 203.2 222.3
24 812.8 24 41.1 1½ 203.2 228.6 254.0

THREADED CLASS 600

Threaded flange dimensions class 600 in millimeters (ASME B16.5)

threaded flange dimensions - Threaded Flange

Size
inch 		D
mm 		X
mm 		G
mm 		t
mm 		B2
mm 		T2
mm 		Q
mm
1/2 95 38.1 35.1 14.2 22.4 22.4 15.7
3/4 117 47.8 42.9 15.7 27.7 25.4 15.7
1 124 53.8 50.8 17.5 34.5 26.9 17.5
1¼ 133 63.5 63.5 20.6 43.2 28.4 20.6
1½ 155 69.9 73.2 22.4 49.5 31.8 22.4
2 165 84.1 91.9 25.4 62.0 36.6 28.4
2½ 191 100.1 104.6 28.4 74.7 41.1 31.8
3 210 117.3 127.0 31.8 90.7 46.0 35.1
3½ 229 133.4 139.7 35.1 103.4 49.3 39.6
4 273 152.4 157.2 38.1 116.1 53.8 41.1
5 330 189.0 185.7 44.5 143.8 60.5 47.8
6 356 222.3 215.9 47.8 170.7 66.5 50.8
8 419 273.1 269.7 55.6 221.5 76.2 57.2
10 508 342.9 323.9 63.5 276.4 85.9 65.0
12 559 400.1 381.0 66.5 327.2 91.9 69.9
14 603 431.8 412.8 69.9 359.2 93.7 73.2
16 686 495.3 469.9 76.2 410.5 106.4 77.7
18 743 546.1 533.4 82.6 461.8 117.3 79.2
20 813 609.6 584.2 88.9 513.1 127.0 82.6
24 940 717.6 692.2 101.6 616.0 139.7 91.9

 

Size Bolts Drilling Bolting Requirements
inch Bolt circle
Diameter mm 		Holes # Holes Dia. mm Bolt Dia. inch. Length
FF Flange 		Length
RF Flange 		Length
RTJ Flange
1/2 66.5 4 15.7 1/2 76.2 69.9 76.2
3/4 82.6 4 19.1 5/8 88.9 82.6 88.9
1 88.9 4 19.1 5/8 88.9 82.6 88.9
1¼ 98.6 4 19.1 5/8 95.3 88.9 95.3
1½ 114.3 4 22.4 3/4 108.0 101.6 108.0
2 127.0 8 19.1 5/8 108.0 101.6 108.0
2½ 149.4 8 22.4 3/4 120.7 114.3 120.7
3 168.1 8 22.4 3/4 127.0 120.7 127.0
3½ 184.2 8 25.4 7/8 139.7 133.4 139.7
4 215.9 8 25.4 7/8 146.1 139.7 146.1
5 266.7 8 28.4 1 165.1 158.8 165.1
6 292.1 12 28.4 1 171.5 165.1 171.5
8 349.3 12 31.8 11/8 190.5 184.2 196.9
10 431.8 16 35.1 1¼ 215.9 209.6 215.9
12 489.0 20 35.1 1¼ 222.3 215.9 222.3
14 527.1 20 38.1 13/8 235.0 228.6 235.0
16 603.3 20 41.1 1½ 254.0 247.7 254.0
18 654.1 20 44.5 15/8 273.1 266.7 273.1
20 723.9 24 44.5 15/8 285.8 279.4 292.1
24 838.2 24 50.8 17/8 330.2 323.9 336.6

THREADED CLASS 900

Threaded flange dimensions class 900 in millimeters (ASME B16.5)

threaded flange dimensions - Threaded Flange

Size
inch 		D
mm 		X
mm 		G
mm 		t
mm 		B
mm 		T2
mm 		Q
mm
1/2 121 38.1 35.1 22.4 23.6 31.8 22.4
3/4 130 44.5 42.9 25.4 29.0 35.1 25.4
1 149 52.3 50.8 28.4 35.8 41.1 28.4
1¼ 159 63.5 63.5 28.4 44.5 41.1 30.2
1½ 178 69.9 73.2 31.8 50.5 44.5 31.8
2 216 104.6 91.9 38.1 63.5 57.2 38.1
2½ 244 124.0 104.6 41.1 76.2 63.5 47.8
3 241 127.0 127.0 38.1 92.2 53.8 41.1
4 292 158.8 157.2 44.5 117.6 69.9 47.8
5 349 190.5 185.7 50.8 144.5 79.2 53.8
6 381 235.0 215.9 55.6 171.5 85.9 57.2
8 470 298.5 269.7 63.5 222.3 101.6 63.5
10 546 368.3 323.9 69.9 276.4 108.0 71.4
12 610 419.1 381.0 79.2 328.7 117.3 76.2
14 641 450.9 412.8 85.9 360.4 130.0 82.6
16 705 508.0 469.9 88.9 411.2 133.4 85.9
18 787 565.2 533.4 101.6 462.0 152.4 88.9
20 857 622.3 584.2 108.0 512.8 158.8 91.9
24 1041 749.3 692.2 139.7 614.4 203.2 101.6

 

Size Bolts Drilling Bolting Requirements
inch Bolt circle
Diameter mm 		Holes # Holes Dia. mm Bolt Dia. inch. Length
FF Flange 		Length
RF Flange 		Length
RTJ Flange
1/2 82.6 4 22.4 3/4 108.0 101.6 108.0
3/4 88.9 4 22.4 3/4 114.3 108.0 114.3
1 101.6 4 25.4 7/8 127.0 120.7 127.0
1¼ 111.3 4 25.4 7/8 127.0 120.7 127.0
1½ 124.0 4 28.4 1 139.7 133.4 139.7
2 165.1 8 25.4 7/8 146.1 139.7 146.1
2½ 190.5 8 28.4 1 158.8 152.4 158.8
3 190.5 8 25.4 7/8 146.1 139.7 146.1
4 235.0 8 31.8 11/8 171.5 165.1 171.5
5 279.4 8 35.1 1¼ 190.5 184.2 190.5
6 317.5 12 31.8 11/8 190.5 184.2 196.9
8 393.7 12 38.1 13/8 222.3 215.9 222.3
10 469.9 16 38.1 13/8 235.0 228.6 235.0
12 533.4 20 38.1 13/8 254.0 247.7 254.0
14 558.8 20 41.1 1½ 273.1 266.7 292.1
16 616.0 20 44.5 15/8 285.8 279.4 298.5
18 685.8 20 50.8 17/8 323.9 317.5 333.6
20 749.3 20 53.8 2 349.3 342.9 362.0
24 901.7 20 66.5 1½ 438.2 431.8 457.2

Material

Special Alloys

  • HASTELLOY® X
  • MONEL® R-405
  • MONEL® K-500
  • HASTELLOY® C-276
  • HASTELLOY® C-22
  • HASTELLOY® B-2
  • INCOLOY® 825
  • INCOLOY® 800H / 800HT®
  • INCONEL® 718
  • INCONEL® ALLOY 625
  • INCONEL® ALLOY 601
  • INCONEL® ALLOY 600
  • MONEL® ALLOY 400

ALLOY 20

  • NICKEL 200/201
  • MONEL® R-405
  • MONEL® K-500
  • MONEL® ALLOY 400
  • INCONEL® 718
  • INCONEL® ALLOY 625
  • INCONEL® ALLOY 601
  • INCONEL® ALLOY 600
  • INCOLOY® 825
  • HASTELLOY® X
  • HASTELLOY® C-276
  • HASTELLOY® C-22
  • HASTELLOY® B-2
  • INCOLOY® 800H / 800HT®
  • HASTELLOY® B-3

Duplex Stainless Steel

  • ZERON® 100, SUPER DUPLEX STAINLESS STEEL
  • Super Duplex S32760
  • LDX 2101®, DUPLEX STEEL
  • Duplex S31803
  • SUPER DUPLEX 2507
  • DUPLEX 2205

Stainless Steel

  • STAINLESS STEEL NITRONIC 50HS
  • STAINLESS STEEL NITRONIC 60
  • STAINLESS STEEL NITRONIC 50
  • STAINLESS STEEL 13-8PH
  • STAINLESS STEEL 15-5PH
  • STAINLESS STEEL PRODEC 303
  • STAINLESS STEEL 303
  • STAINLESS STEEL 446
  • STAINLESS STEEL 410S
  • STAINLESS STEEL 410
  • STAINLESS STEEL 304-304H
  • STAINLESS STEEL 17-4
  • STAINLESS STEEL 347
  • STAINLESS STEEL 440C
  • STAINLESS STEEL 309
  • STAINLESS STEEL 316-316l
  • STAINLESS STEEL AL-6XN®
  • STAINLESS STEEL 330
  • STAINLESS STEEL 321
  • 317L STAINLESS STEEL
  • STAINLESS STEEL 310/310S
  • Stainless Steel 304L
  • Stainless Steel 304
  • STAINLESS STEEL 253 MA

Carbon Steel

  • CARBON STEEL PRODUCTS

Titanium

  • 10V-2Fe-3Al
  • 6Al-4V
  • 6Al-4V STA
  • 6Al-4V ELI
  • 6Al-2Sn-4Zr-2Mo

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