Inch Dimensions of Lap Joint Flange Rating 300 as per ASME B16.5

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Lap Joint Flange Dimensions

Lap Joint Flange Dimensions

Metric Dimensions
150 300 400 600 900 1500 2500
Inch Dimensions
150 300 400 600 900 1500 2500

NPSOtfX
1/23.750.561.50
3/44.620.621.88
14.880.692.12
1-1/45.250.752.50
1-1/26.120.812.75
26.500.883.31
2-1/27.501.003.94
38.251.124.62
3-1/29.001.195.25
410.001.255.75
511.001.387.00
612.5O1.448.12
815.001.6210.25
1017.501.8812.62
1220.502.0014.75
NPSOtfX
1423.002.1216.75
1625.502.2519.00
1828.002.3821.00
2030.502.5023.12
2436.002.7527.62

Lap Joint Flange Dimensions

Lap Joint Flange Dimensions

NPSYBr
1/20.880.900.12
3/41.001.110.12
11.061.380.12
1-1/41.061.720.19
1-1/21.191.970.25
21.312.460.31
2-1/21.502.970.31
31.693.600.38
3-1/21.754.100.38
41.884.600.44
52.005.690.44
62.066.750.50
82.448.750.50
103.7510.920.50
124.0012.920.50
NPSYBr
144.3814.180.50
164.7516.190.50
185.1218.200.50
205.5020.250.50
246.0024.250.50

Templates for drilling of bolt holes

Flange Drilling Template

Flange Drilling Template

NPSBCDBHDBOLTSBD
1/22.625/841/2
3/43.253/445/8
13.503/445/8
1-1/43.883/445/8
1-1/24.507/843/4
25.003/485/8
2-1/25.887/883/4
36.627/883/4
3-1/27.257/883/4
47.887/883/4
59.257/883/4
610.627/8123/4
813.001127/8
1015.251-1/8161
1217.751-1/4161-1/8
NPSBCDBHDBOLTSBD
1420.251-1/4201-1/8
1622.501-3/8201-1/4
1824.751-3/8241-1/4
2027.001-3/8241-1/4
2432.001-5/8241-1/2

Flange Drilling Template

Flange Drilling Template

NPSSBL RFYSBL RJMBL RF
1/22.503.002.25
3/43.003.502.50
13.003.502.50
1-1/43.253.752.75
1-1/23.504.003.00
23.504.003.00
2-1/24.004.503.25
34.254.753.50
3-1/24.255.003.75
44.505.003.75
54.755.254.25
64.755.504.25
85.506.004.75
106.256.755.50
126.757.255.75
NPSSBL RFYSBL RJMBL RF
147.007.506.25
167.508.006.50
187.758.256.75
208.008.757.25
249.0010.008.00

Metric Dimensions
150 300 400 600 900 1500 2500
Inch Dimensions
150 300 400 600 900 1500 2500

General Notes

Dimensions are in inches.

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