Metric Dimensions of Weld Neck Flange Rating 150 as per ASME B16.5

Weld Neck Flange Dimensions
Weld Neck Flange Dimensions
Metric Dimensions
150 300 400 600 900 1500 2500
Inch Dimensions
150 300 400 600 900 1500 2500

NPSOtfX
1/2909.630
3/410011.238
111012.749
1-1/411514.359
1-1/212515.965
215017.578
2-1/218020.790
319022.3108
3-1/221522.3122
423022.3135
525522.3164
628023.9192
834527246
1040528.6305
1248530.2365
NPSOtfX
1453533.4400
1659535457
1863538.1505
2070041.3559
2481546.1663

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Weld Neck Flange Dimensions
Weld Neck Flange Dimensions

NPSAYB
1/221.34615.8
3/426.75120.9
133.45426.6
1-1/442.25635.1
1-1/248.36040.9
260.36252.5
2-1/2736862.7
388.96877.9
3-1/2101.67090.1
4114.375102.3
5141.387128.2
6168.387154.1
8219.1100202.7
10273100254.6
12323.8113304.8
NPSAYB
14355.6125BY P
16406.4125BY P
18457138BY P
20508143BY P
24610151BY P

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Templates for drilling of bolt holes

Flange Drilling Template
Flange Drilling Template

NPSBCDBHDBOLTSBD
1/260.35/841/2
3/469.95/841/2
179.45/841/2
1-1/488.95/841/2
1-1/298.45/841/2
2120.73/445/8
2-1/2139.73/445/8
3152.43/445/8
3-1/2177.83/485/8
4190.53/485/8
5215.97/883/4
6241.37/883/4
8298.57/883/4
10362.01127/8
12431.81127/8
NPSBCDBHDBOLTSBD
14476.31-1/8121
16539.81-1/8161
18577.91-1/4161-1/8
20635.01-1/4201-1/8
24749.31-3/8201-1/4

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Flange Drilling Template
Flange Drilling Template

NPSSBL RFYSBL RJMBL RF
1/255NA50
3/465NA50
1657555
1-1/4708555
1-1/2708565
2859570
2-1/29010075
39010075
3-1/29010075
49010075
59511085
610011585
811012090
10115125100
12120135100
NPSSBL RFYSBL RJMBL RF
14135145115
16135145115
18145160125
20160170140
24170185150

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

General Notes

Dimensions are in millimeters, except for diameters of bolts and bolt holes, which are in inch units.