ANSI/ASME B16.5 class 150 weld neck flange
ANSI/ASME B16.5 standard covers pressure,temperature,ratings,materials,dimensions,tolerances,marking, testing,and methods of designating openings for pipe flanges and flanged fittings.Weld neck flange dimensions are covered in ANSI/ASME B16.5 for size NPS ½” to 24″ for above NPS 26″ to 60″ it should be as per ANSI/ASME B16.47.
ANSI/ASME B16.5 Class 150lb Weld Neck Flange Dimensions:
Pipe | Flange Data | Hub Data | Raised Face | Drilling Data | Weight | |||||||
Nominal Pipe Size | A | B | C | D | E | F | G | H | I | J | ||
Outside Diameter | Overall Diameter | Inside Diameter | Flange Thickness min | Overall Length | Diameter at Weld Bevel | Hub Diameter | Face Diameter | Number of Holes | Bolt Hole Diameter | Diameter of Circle of Holes | kg/piece | |
in mm |
in mm |
in mm |
in mm |
in mm |
in mm |
in mm |
in mm |
in mm |
in mm |
|||
½ | 0.840 21.30 | 3.500 88.90 | 0.620 15.70 | 0.440 11.20 | 1.880 47.80 | 0.840 21.30 | 1.190 30.20 | 1.380 35.00 | 4 | 0.620 15.70 | 2.380 60.45 | 0.48 |
¾ | 1.050 26.70 | 3.880 98.60 | 0.820 20.80 | 0.500 12.70 | 2.060 52.30 | 1.050 26.70 | 1.500 38.10 | 1.690 42.90 | 4 | 0.620 15.70 | 2.750 69.85 | 0.71 |
1 | 1.315 33.40 | 4.250 108.0 | 1.050 26.70 | 0.560 14.20 | 2.190 55.60 | 1.320 33.50 | 1.940 49.30 | 2.000 50.80 | 4 | 0.620 15.70 | 3.120 79.25 | 1.01 |
1 ¼ | 1.660 42.20 | 4.620 117.3 | 1.380 35.10 | 0.620 15.70 | 2.250 57.15 | 1.660 42.20 | 2.310 58.70 | 2.500 63.50 | 4 | 0.620 15.70 | 3.500 88.90 | 1.33 |
1 ½ | 1.900 48.30 | 5.000 127.0 | 1.610 40.90 | 0.690 17.50 | 2.440 62.00 | 1.900 48.30 | 2.560 65.00 | 2.880 73.15 | 4 | 0.620 15.70 | 3.880 98.60 | 1.72 |
2 | 2.375 60.30 | 6.000 152.4 | 2.070 52.60 | 0.750 19.10 | 2.500 63.50 | 2.380 60.45 | 3.060 77.70 | 3.620 91.90 | 4 | 0.750 19.10 | 4.750 120.7 | 2.58 |
2 ½ | 2.875 73.00 | 7.000 177.8 | 2.470 62.70 | 0.880 22.40 | 2.750 69.85 | 2.880 73.15 | 3.560 90.40 | 4.120 104.6 | 4 | 0.750 19.10 | 5.500 139.7 | 4.11 |
3 | 3.500 88.90 | 7.500 190.5 | 3.070 78.00 | 0.940 23.90 | 2.750 69.85 | 3.500 88.90 | 4.250 108.0 | 5.000 127.0 | 4 | 0.750 19.10 | 6.000 152.4 | 4.92 |
3 ½ | 4.000 101.6 | 8.500 215.9 | 3.550 90.20 | 0.940 23.90 | 2.810 71.40 | 4.000 101.6 | 4.810 122.2 | 5.500 139.7 | 8 | 0.750 19.10 | 7.000 177.8 | 6.08 |
4 | 4.500 114.3 | 9.000 228.6 | 4.030 102.4 | 0.940 23.90 | 3.000 76.20 | 4.500 114.3 | 5.310 134.9 | 6.190 157.2 | 8 | 0.750 19.10 | 7.500 190.5 | 6.84 |
5 | 5.563 141.3 | 10.00 254.0 | 5.050 128.3 | 0.940 23.90 | 3.500 88.90 | 5.560 141.2 | 6.440 163.6 | 7.310 185.7 | 8 | 0.880 22.40 | 8.500 215.9 | 8.56 |
6 | 6.625 168.3 | 11.00 279.4 | 6.070 154.2 | 1.000 25.40 | 3.500 88.90 | 6.630 168.4 | 7.560 192.0 | 8.500 215.9 | 8 | 0.880 22.40 | 9.500 241.3 | 10.6 |
8 | 8.625 219.1 | 13.50 342.9 | 7.980 202.7 | 1.120 28.40 | 4.000 101.6 | 8.630 219.2 | 9.690 246.1 | 10.62 269.7 | 8 | 0.880 22.40 | 11.75 298.5 | 17.6 |
10 | 10.75 273.0 | 16.00 406.4 | 10.02 254.5 | 1.190 30.20 | 4.000 101.6 | 10.75 273.0 | 12.00 304.8 | 12.75 323.8 | 12 | 1.000 25.40 | 14.25 362.0 | 24.0 |
12 | 12.75 323.8 | 19.00 482.6 | 12.00 304.8 | 1.250 31.75 | 4.500 114.3 | 12.75 323.8 | 14.38 365.3 | 15.00 381.0 | 12 | 1.000 25.40 | 17.00 431.8 | 36.5 |
14 | 14.00 355.6 | 21.00 533.4 | To be specified by purchaser | 1.380 35.10 | 5.000 127.0 | 14.00 355.6 | 15.75 400.1 | 16.25 412.7 | 12 | 1.120 28.40 | 18.75 476.3 | 48.4 |
16 | 16.00 406.4 | 23.50 596.9 | 1.440 36.60 | 5.000 127.0 | 16.00 406.4 | 18.00 475.2 | 18.50 469.9 | 16 | 1.120 28.40 | 21.25 539.8 | 60.6 | |
18 | 18.00 457.2 | 25.00 635.0 | 1.560 39.60 | 5.500 139.7 | 18.00 457.2 | 19.88 505.0 | 21.00 533.4 | 16 | 1.250 31.75 | 22.75 577.9 | 68.3 | |
20 | 20.00 508.0 | 27.50 698.5 | 1.690 42.90 | 5.690 144.5 | 20.00 508.0 | 22.00 558.8 | 23.00 584.2 | 20 | 1.250 31.75 | 25.00 635.0 | 84.5 | |
24 | 24.00 609.6 | 32.00 812.8 | 1.880 47.80 | 6.000 152.4 | 24.00 609.6 | 26.12 663.4 | 27.25 692.1 | 20 | 1.380 35.10 | 29.50 749.3 | 115 |
Notes:
- Dimension B corresponds to the pipe inside diameter.Values quoted assume 40S/standard wall thickness.
- Weights are based on manufacturer’s data and are approximate.
- Flat face flanges may be provided at full thickness,C,or with raised face removed (the latter is nonstandard).
Specifications of ANSI/ASME B16.5 flange:
Types of ANSI/ASME B16.5 forged flanges:
Weld neck flange(WN flange) is circumferentially welded into the system at its neck which means that the integrity of the butt welded area can be easily examined by radiography.The bores of both pipe and flange match,which reduces turbulence and erosion inside the pipeline.The weld neck is therefore favoured in critical applications. |
|
Blind flange is used to blank off pipelines,valves and pumps,it can also be used as an inspection cover.It is sometimes referred to as a blank flange. | |
Slip on flange(SO flange) is slipped over the pipe and then fillet welded.Slip-on flanges are easy to use in fabricated applications. | |
Lap joint flange(LJ flange) is always used with either a stub end or taft which is butt welded to the pipe with the flange loose behind it.This means the stub end or taft always makes the face.The lap joint is favoured in low pressure applications because it is easily assembled and aligned.To reduce cost these flanges can be supplied without a hub and/or in treated,coated carbon steel. |
|
Socket weld flange(SW flange) is counter bored to accept the pipe before being fillet welded.The bore of the pipe and flange are both the same therefore giving good flow characteristics. | |
Threaded flange is referred to as either threaded or screwed.It is used to connect other threaded components in low pressure, non-critical applications.No welding is required. | |
Ring type joint is a method of ensuring leak proof flange connection at high pressures.A metal ring is compressed into a hexagonal groove on the face of the flange to make the seal.This jointing method can be employed on weld neck flanges,slip on flange and blind flanges. |
Materials of ANSI/ASME B16.5 class 150 weld neck flange:
Carbon steel ANSI/ASME B16.5 weld neck flange:
ASTM A105,A350 LF2,SS400,P235GH,P250GH,C22.8,Q235,20#,16Mn,etc.
Stainless steel ANSI/ASME B16.5 weld neck flange:
ASTM A182 F304,F304L,F316,F316L,F321,F347,F310,F44,F51,etc.
Alloy steel ANSI/ASME B16.5 weld neck flange:
ASTM A694 F42,F46,F52,F56,F60,F65,F70,A182 F5,F9,F91,F12,F11,F22,etc.
Related:
- ANSI/ASME B16.5 class 150 weld neck flange
- ANSI/ASME B16.5 class 300 weld neck flange
- ANSI/ASME B16.5 class 400 weld neck flange
- ANSI/ASME B16.5 class 600 weld neck flange
- ANSI/ASME B16.5 class 900 weld neck flange
- ANSI/ASME B16.5 class 1500 weld neck flange
- ANSI/ASME B16.5 class 2500 weld neck flange
Haihao Group is one of the the biggest flanges manufacturer & supplier & exporter in China,we has strong experience in flange production and inspection and a complete set of equipment,including advanced cutting,forging,machining,drilling machines and professional testing & inspection instruments.If you want to know more about our forged flanges,please email us:sales@haihaogroup.com