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Lap Joint Flange Dimensions (Cl. 150/300/900/1500/2500)

The charts show the dimensions of lap joint flange class 150, 300, 400, 900, 1500, 2500 in inches and in millimeters.

LAP JOINT FLANGE DIMENSIONS IN INCHES

LAP JOINT CLASS 150 (IN INCH)

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

Lap Joint Flange Dimensions ASME B16.5

FLANGE
NPS
Inside
Diameter
Outside
Diameter
Bolt Circle (BC)HT1T2RABolt Hole (B)No. of Bolt Holes
1/2″0.88″3.50″2.38″1.19″.44″.62″.12″.62″4
3/4″1.09″3.88″2.75″1.50″.50″.62″.12″.62″4
1″1.36″4.25″3.12″1.94″.56″.69″.12″.62″4
1-1/4″1.70″4.62″3.50″2.31″.62″.81″.19″.62″4
1-1/2″1.97″5.00″3.88″2.56″.69″.88″.25″.62″4
2″2.44″6.00″4.75″3.06″.75″1.00″.31″.75″4
2-1/2″2.94″7.00″5.50″3.56″.88″1.12″.31″.75″4
3″3.57″7.50″6.00″4.25″.94″1.19″.38″.75″4
3-1/2″4.07″8.50″7.00″4.81″.94″1.25″.38″.75″8
4″4.57″9.00″7.50″5.31″.94″1.31″.44″.75″8
5″5.66″10.00″8.50″6.44″.94″1.44″.44″.88″8
6″6.72″11.00″9.50″7.56″1.00″1.56″.50″.88″8
8″8.72″13.50″11.75″9.69″1.12″1.75″.50″.88″8
10″10.88″16.00″14.25″12.00″1.19″1.94″.50″1.00″12
12″12.88″19.00″17.00″14.38″1.25″2.19″.50″1.00″12
14″14.14″21.00″18.75″15.75″1.38″3.12″.50″1.12″12
16″16.16″23.50″21.25″18.00″1.44″3.44″.50″1.12″16
18″18.18″25.00″22.75″19.88″1.56″3.81″.50″1.25″16
20″20.20″27.50″25.00″22.00″1.69″4.06″.50″1.25″20
22″22.22″29.50″27.25″24.25″1.81″4.25″.50″1.38″20
24″24.25″32.00″29.50″26.12″1.88″4.38″.50″1.38″20

LAP JOINT CLASS 300 (IN INCH)

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

Lap Joint Flange Dimensions ASME B16.5

FLANGE
NPS
Inside
Diameter
Outside
Diameter
Bolt Circle (BC)HT1T2RABolt Hole (B)No. of Bolt Holes
1/2″0.90″3.75″2.62″1.50″0.56″0.88″.12″0.62″4
3/4″1.11″4.62″3.25″1.88″0.62″1.00″.12″0.75″4
1″1.38″4.88″3.50″2.12″0.69″1.06″.12″0.75″4
1-1/4″1.72″5.25″3.88″2.50″0.75″1.06″.19″0.75″4
1-1/2″1.97″6.12″4.50″2.75″0.81″1.19″.25″0.88″4
2″2.46″6.50″5.00″3.31″0.88″1.31″.31″0.75″8
2-1/2″2.97″7.50″5.88″3.94″1.00″1.50″.31″0.88″8
3″3.60″8.25″6.62″4.62″1.12″1.69″.38″0.88″8
3-1/2″4.10″9.00″7.25″5.25″1.19″1.75″.38″0.88″8
4″4.60″10.00″7.88″5.75″1.25″1.88″.44″0.88″8
5″5.69″11.00″9.25″7.00″1.38″2.00″.44″0.88″8
6″6.75″12.50″10.62″8.12″1.44″2.06″.50″0.88″12
8″8.75″15.00″13.00″10.25″1.62″2.44″.50″1.00″12
10″10.92″17.50″15.25″12.62″1.88″3.75″.50″1.12″16
12″12.92″20.50″17.75″14.75″2.00″4.00″.50″1.25″16
14″14.18″23.00″20.25″16.75″2.12″4.38″.50″1.25″20
16″16.19″25.50″22.50″19.00″2.25″4.75″.50″1.38″20
18″18.20″28.00″24.75″21.00″2.38″5.12″.50″1.38″24
20″20.25″30.50″27.00″23.12″2.50″5.50″.50″1.38″24
22″22.25″33.00″29.25″25.25″2.63″5.75″.50″1.63″24
24″24.25″36.00″32.00″27.62″2.75″6.00″.50″1.62″24

LAP JOINT CLASS 400 (IN INCH)

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

Lap Joint Flange Dimensions ASME B16.5

FLANGE
NPS
Inside
Diameter
Outside
Diameter
Bolt Circle (BC)HT1T2RABolt Hole (B)No. of Bolt Holes
1/2″0.90″3.75″2.62″1.50″0.56″0.88″.12″0.62″4
3/4″1.11″4.62″3.25″1.88″0.62″1.00″.12″0.75″4
1″1.38″4.88″3.50″2.12″0.69″1.06″.12″0.75″4
1-1/4″1.72″5.25″3.88″2.50″0.81″1.12″.19″0.75″4
1-1/2″1.97″6.12″4.50″2.75″0.88″1.25″.25″0.88″4
2″2.46″6.50″5.00″3.31″1.00″1.44″.31″0.75″8
2-1/2″2.97″7.50″5.88″3.94″1.12″1.62″.31″0.88″8
3″3.60″8.25″6.62″4.62″1.25″1.81″.38″0.88″8
3-1/2″4.10″9.00″7.25″5.25″1.38″1.94″.38″1.00″8
4″4.60″10.00″7.88″5.75″1.38″2.00″.44″1.00″8
5″5.69″11.00″9.25″7.00″1.50″2.12″.44″1.00″8
6″6.75″12.50″10.62″8.12″1.62″2.25″.50″1.00″12
8″8.75″15.00″13.00″10.25″1.88″2.69″.50″1.12″12
10″10.92″17.50″15.25″12.62″2.12″4.00″.50″1.25″16
12″12.92″20.50″17.75″14.75″2.25″4.25″.50″1.38″16
14″14.18″23.00″20.25″16.75″2.38″4.62″.50″1.38″20
16″16.19″25.50″22.50″19.00″2.50″5.00″.50″1.50″20
18″18.20″28.00″24.75″21.00″2.62″5.38″.50″1.50″24
20″20.25″30.50″27.00″23.12″2.75″5.75″.50″1.62″24
22″22.25″33.00″29.25″25.25″2.88″6.00″.50″1.75″24
24″24.25″36.00″32.00″27.62″3.00″6.25″.50″1.88″24

LAP JOINT CLASS 600 (IN INCH)

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

Lap Joint Flange Dimensions ASME B16.5

FLANGE
NPS
Inside
Diameter
Outside
Diameter
Bolt Circle (BC)HT1T2RABolt Hole (B)No. of Bolt Holes
1/2″0.90″3.75″2.62″1.50″0.56″0.88″.12″0.62″4
3/4″1.11″4.62″3.25″1.88″0.62″1.00″.12″0.75″4
1″1.38″4.88″3.50″2.12″0.69″1.06″.12″0.75″4
1-1/4″1.72″5.25″3.88″2.50″0.81″1.12″.19″0.75″4
1-1/2″1.97″6.12″4.50″2.75″0.88″1.25″.25″0.88″4
2″2.46″6.50″5.00″3.31″1.00″1.44″.31″0.75″8
2-1/2″2.97″7.50″5.88″3.94″1.12″1.62″.31″0.88″8
3″3.60″8.25″6.62″4.62″1.25″1.81″.38″0.88″8
3-1/2″4.10″9.00″7.25″5.25″1.38″1.94″.38″1.00″8
4″4.60″10.75″8.50″6.00″1.5″2.12″.44″1.00″8
5″5.69″13.00″10.50″7.44″1.75″2.38″.44″1.12″8
6″6.75″14.00″11.50″8.75″1.88″2.62″.50″1.12″12
8″8.75″16.50″13.75″10.75″2.19″3.00″.50″1.25″12
10″10.92″20.00″17.00″13.5″2.50″4.38″.50″1.38″16
12″12.92″22.00″19.25″15.75″2.62″4.62″.50″1.38″20
14″14.18″23.75″20.75″17.00″2.75″5.00″.50″1.50″20
16″16.19″27.00″23.75″19.50″3.00″5.50″.50″1.62″20
18″18.20″29.25″25.75″21.50″3.25″6.00″.50″1.75″20
20″20.25″32.00″28.50″24.00″3.50″6.50″.50″1.75″24
22″22.25″34.25″30.63″26.25″3.75″6.88″.50″1.75″24
24″24.25″37.00″33.00″28.25″4.00″7.25″.50″2.00″24

LAP JOINT CLASS 900 (IN INCH)

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

Lap Joint Flange Dimensions ASME B16.5

FLANGE
NPS
Inside
Diameter
Outside
Diameter
Bolt Circle (BC)HT1T2RABolt Hole (B)No. of Bolt Holes
3″3.60″9.50″7.50″5.00″1.50″2.13″.38″1.00″8
4″4.60″11.50″9.25″6.25″1.75″2.75″.44″1.25″8
5″5.69″13.75″11.00″7.50″3.00″3.13″.44″1.38″8
6″6.75″15.00″12.50″9.25″2.19″3.38″.50″1.25″12
8″8.75″18.50″15.50″11.75″2.50″4.50″.50″1.50″12
10″10.92″21.50″18.50″14.50″2.75″5.00″.50″1.50″16
12″12.92″24.00″21.00″16.50″3.13″5.63″.50″1.50″20
14″14.18″25.25″22.00″17.75″3.38″6.13″.50″1.63″20
16″16.19″27.75″24.25″20.00″3.50″6.50″.50″1.75″20
18″18.20″31.00″27.00″22.25″4.00″7.50″.50″2.00″20
20″20.25″33.75″29.50″24.50″4.25″8.25″.50″2.13″20
24″24.25″41.00″35.50″29.50″5.50″10.50″.50″2.63″20

LAP JOINT CLASS 1500 (IN INCH)

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

Lap Joint Flange Dimensions ASME B16.5

FLANGE
NPS
Inside
Diameter
Outside
Diameter
Bolt Circle (BC)Raised Face (R)Raised Face (RF)HRaised Face Thickness (T)T1Flat Face Thickness (T2)Bolt Hole (B)No. of Bolt Holes
1/2″0.88″4.75″3.25″1.38″.250″1.50″1.50″0.88″1.25″0.88″4
3/4″1.09″5.13″3.50″1.69″.250″1.75″1.63″1.00″1.38″0.88″4
1″1.36″5.88″4.00″2.00″.250″2.06″1.88″1.13″1.63″1.00″4
1-1/4″1.70″6.25″4.38″2.50″.250″2.50″1.88″1.13″1.63″1.00″4
1-1/2″1.95″7.00″4.88″2.88″.250″2.75″2.00″1.25″1.75″1.13″4
2″2.44″8.50″6.50″3.63″.250″4.13″2.50″1.50″2.25″1.00″8
2-1/2″2.94″9.63″7.50″4.13″.250″4.88″2.75″1.63″2.50″1.13″8
3″ **3.57″10.50″8.00″5.00″.250″5.25″3.13″1.88″2.88″1.25″8
4″ **4.57″12.25″9.50″6.19″.250″6.38″3.81″2.13″3.56″1.38″8
5″ **5.66″14.75″11.50″7.31″.250″7.75″4.38″2.88″4.13″1.63″8
6″ **6.72″15.50″12.50″8.50″.250″9.00″4.94″3.25″4.69″1.50″12
8″ **8.72″19.00″15.50″10.63″.250″11.50″5.88″3.63″5.63″1.75″12
10″ **10.88″23.00″19.00″12.75″.250″14.50″6.50″4.25″6.25″2.00″12
12″ **12.88″26.50″22.50″15.00″.250″17.75″7.38″4.88″7.13″2.13″16

LAP JOINT CLASS 2500 (IN INCH)

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

Lap Joint Flange Dimensions ASME B16.5

FLANGE
NPS
Inside
Diameter
Outside
Diameter
Bolt Circle (BC)HT1T2RABolt Hole (B)No. of Bolt Holes
1/2″0.90″5.25″3.50″1.69″1.19″1.56″.12″0.88″4
3/4″1.11″5.50″3.75″2.00″1.25″1.69″.12″0.88″4
1″1.38″6.25″4.25″2.25″1.38″1.88″.12″1.00″4
1-1/4″1.72″7.25″5.13″2.88″1.50″2.06″.19″1.13″4
1-1/2″1.97″8.00″5.75″3.13″1.75″2.38″.25″1.25″4
2″2.46″9.25″6.75″3.75″2.00″2.75″.31″1.13″8
2-1/2″2.97″10.50″7.75″4.50″2.25″3.13″.31″1.25″8
3″3.60″12.00″9.00″5.25″2.63″3.63″.38″1.38″8
4″4.60″14.00″10.75″6.50″3.00″4.25″.44″1.63″8
5″5.69″16.50″12.75″8.00″3.63″5.13″.44″1.88″8
6″6.75″19.00″14.50″9.25″4.25″6.00″.50″2.13″8
8″8.75″21.75″17.25″12.00″5.00″7.00″.50″2.13″12
10″10.92″26.50″21.25″14.75″6.50″9.00″.50″2.63″12
12″12.92″30.00″24.38″17.38″7.25″10.00″.50″2.88″12

LAP JOINT FLANGE DIMENSIONS IN MILLIMETERS

LAP JOINT CLASS 150 (IN MM)

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

Lap joint flange dimensions ASME B16.5

Size
inch
D
mm
X
mm
t
mm
B3
mm
T3
mm
1/28930.211.222.915.73.0
3/49938.112.728.215.73.0
110849.314.235.117.53.0
11758.715.743.720.64.8
12765.017.550.022.46.4
215277.719.162.525.47.9
17890.422.475.428.47.9
3191108.023.991.430.29.7
216122.223.9104.131.89.7
4229134.923.9116.833.311.2
5254163.623.9144.536.611.2
6279192.025.4171.539.612.7
8343246.128.4223.344.512.7
10406304.830.2277.449.312.7
12483365.331.8328.255.612.7
14533400.135.1360.279.212.7
16597457.236.6411.287.412.7
18635505.039.6462.396.812.7
20699558.842.9514.4103.112.7
24813663.447.8616.0111.312.7

 

SizeDrillingBolting
inchBolt circle
Diameter mm
Holes #Holes Dia. mmBolt Dia. inch.Length
FF Flange
Length
RF Flange
Length
RTJ Flange
1/260.5415.71/250.857.2
3/469.9415.71/250.863.5
179.2415.71/257.263.576.2
88.9415.71/257.269.982.6
98.6415.71/263.569.982.6
2120.7419.15/869.982.695.3
139.7419.15/876.288.9101.6
3152.4419.15/876.288.9101.6
177.8819.15/876.288.9101.6
4190.5819.15/876.288.9101.6
5215.9822.43/482.695.3108.0
6241.3822.43/482.6101.6114.3
8298.5822.43/488.9108.0120.7
10362.01225.47/8101.6114.3127.0
12431.81225.47/8101.6120.7133.4
14476.31228.41114.3133.4146.1
16539.81628.41114.3133.4146.1
18577.91631.811/8127.0146.1158.8
20635.02031.811/8139.7158.8171.5
24749.32035.1152.4171.5184.2

LAP JOINT CLASS 300 (IN MM)

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

Lap joint flange dimensions ASME B16.5

Size
inch
D
mm
X
mm
t
mm
B3
mm
T3
mm
1/29538.114.222.922.43.0
3/411747.815.728.225.43.0
112453.817.535.126.93.0
13363.519.143.726.94.8
15569.920.650.030.26.4
216584.122.462.533.37.9
191100.125.475.438.17.9
3210117.328.491.442.99.7
229133.430.2104.144.59.7
4254146.131.8116.847.811.2
5279177.835.1144.550.811.2
6318206.236.6171.552.312.7
8381260.441.1222.362.012.7
10445320.547.8277.466.512.7
12521374.750.8328.2101.612.7
14584425.563.8360.2111.312.7
16648482.657.2411.2120.712.7
18711533.460.5462.3130.012.7
20775587.263.5514.4139.712.7
24914701.569.9616.0152.412.7

 

SizeDrillingBolting
inchBolt circle
Diameter mm
Holes #Holes Dia. mmBolt Dia. inch.Length
FF Flange
Length
RF Flange
Length
RTJ Flange
1/266.5415.71/257.263.576.2
3/482.6419.15/863.576.288.9
188.9419.15/863.576.288.9
98.6419.15/869.982.695.3
114.3422.43/476.288.9101.6
2127.0819.15/876.288.9101.6
149.4822.43/482.6101.6114.3
3168.1822.43/488.9108.0120.7
184.2822.43/495.3108.0127.0
4200.2822.43/495.3114.3127.0
5235.0822.43/4108.0120.7133.4
6269.71222.43/4108.0120.7139.7
8330.21225.47/8120.7139.7152.4
10387.41628.41139.7158.8171.5
12450.91631.811/8146.1171.5184.2
14514.42031.811/8158.8177.8190.5
16571.52035.1165.1190.5203.2
18628.72435.1171.5196.9209.6
20685.82435.1184.2203.2222.3
24812.82441.1203.2228.6254.0

LAP JOINT CLASS 600 (IN MM)

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

Lap joint flange dimensions ASME B16.5

Size
inch
D
mm
X
mm
t
mm
B3
mm
T3
mm
1/29538.114.222.922.43.0
3/411747.815.728.225.43.0
112453.817.535.126.93.0
13363.520.643.728.44.8
15569.922.450.031.86.4
216584.125.462.536.67.9
191100.128.475.441.17.9
3210117.331.891.446.09.7
229133.435.1104.149.39.7
4273152.438.1116.853.811.2
5330189.044.5144.560.511.2
6356222.347.8171.566.512.7
8419273.155.6222.376.212.7
10508342.963.5277.4111.312.7
12559400.166.5328.2117.312.7
14603431.869.9360.2127.012.7
16686495.376.2411.2139.712.7
18743546.182.6462.3152.412.7
20813609.688.9514.4165.112.7
24940717.6101.6616.0184.212.7

 

SizeDrillingBolting
inchBolt circle
Diameter mm
Holes #Holes Dia. mmBolt Dia. inch.Length
FF Flange
Length
RF Flange
Length
RTJ Flange
1/266.5415.71/276.269.976.2
3/482.6419.15/888.982.688.9
188.9419.15/888.982.688.9
98.6419.15/895.388.995.3
114.3422.43/4108.0101.6108.0
2127.0819.15/8108.0101.6108.0
149.4822.43/4120.7114.3120.7
3168.1822.43/4127.0120.7127.0
184.2825.47/8139.7133.4139.7
4215.9825.47/8146.1139.7146.1
5266.7828.41165.1158.8165.1
6292.11228.41171.5165.1171.5
8349.31231.811/8190.5184.2196.9
10431.81635.1215.9209.6215.9
12489.02035.1222.3215.9222.3
14527.12038.113/8235.0228.6235.0
16603.32041.1254.0247.7254.0
18654.12044.515/8273.1266.7273.1
20723.92444.515/8285.8279.4292.1
24838.22450.817/8330.2323.9336.6

LAP JOINT CLASS 900 (IN MM)

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

Lap joint flange dimensions ASME B16.5

Size
inch
D
mm
X
mm
t
mm
B3
mm
T3
mm
1/212138.122.422.931.83.0
3/413044.525.428.235.13.0
114952.328.435.141.13.0
15963.528.443.741.14.8
17869.931.850.044.56.4
2216104.638.162.557.27.9
244124.041.175.463.57.9
3241127.038.191.453.89.7
4292158.844.5116.869.911.2
5349190.550.8144.579.211.2
6381235.055.6171.585.912.7
8470298.563.5222.3114.312.7
10546368.369.9277.4127.012.7
12610419.179.2328.2142.712.7
14641450.985.9360.2155.412.7
16705508.088.9411.2165.112.7
18787565.2101.642.3190.512.7
20857622.3108.0514.4209.612.7
241041749.3139.7616.0266.712.7

 

SizeDrillingBolting
inchBolt circle
Diameter mm
Holes #Holes Dia. mmBolt Dia. inch.Length
FF Flange
Length
RF Flange
Length
RTJ Flange
1/282.6422.43/4108.0101.6108.0
3/488.9422.43/4114.3108.0114.3
1101.6425.47/8127.0120.7127.0
111.3425.47/8127.0120.7127.0
124.0428.41139.7133.4139.7
2165.1825.47/8146.1139.7146.1
190.5828.41158.8152.4158.8
3190.5825.47/8146.1139.7146.1
4235.0831.811/8171.5165.1171.5
5279.4835.1190.5184.2190.5
6317.51231.811/8190.5184.2196.9
8393.71238.113/8222.3215.9222.3
10469.91638.113/8235.0228.6235.0
12533.42038.113/8254.0247.7254.0
14558.82041.1273.1266.7292.1
16616.02044.515/8285.8279.4298.5
18685.82050.817/8323.9317.5333.6
20749.32053.82349.3342.9362.0
24901.72066.5438.2431.8457.2

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