ANSI/ASME B16.5 class 300lb weld neck flange
Haihao Group manufacture/produce ANSI/ASME B16.5 class 300lb weld neck flanges more than 30 years,the product dimension from ½” to 24″.
The weld neck flange,abbreviated as WNF,is one of the most commonly used typed of forged flanges that is usually used with pipes rather than pressure vessels.ANSI/ASME B16.5 standard covers pressure,temperature ratings,materials, dimensions,tolerances,marking,testing,and methods of designating openings.ANSI/ASME B16.5 weld neck flange dimensions are applicable to all flange materials.
ANSI ASME B16.5 class 300 A182 F316 weld neck flange
ANSI/ASME B16.5 class 300lb weld neck flange specification:
ANSI ASME B16.5 class 300 weld neck flange
| 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 | 3.750 95.20 | 0.620 15.70 | 0.560 14.20 | 2.060 52.30 | 0.840 21.30 | 1.500 38.10 | 1.380 35.00 | 4 | 0.620 15.70 | 2.620 66.55 | 0.75 |
| ¾ | 1.050 26.70 | 4.620 117.3 | 0.820 20.80 | 0.620 15.70 | 2.250 57.15 | 1.050 26.70 | 1.880 47.70 | 1.690 42.90 | 4 | 0.750 19.00 | 3.250 82.50 | 1.26 |
| 1 | 1.315 33.40 | 4.880 123.9 | 1.050 26.70 | 0.690 17.50 | 2.440 62.00 | 1.320 33.50 | 2.120 53.80 | 2.000 50.80 | 4 | 0.750 19.00 | 3.500 88.90 | 1.52 |
| 1¼ | 1.660 42.20 | 5.250 133.3 | 1.380 35.10 | 0.750 19.00 | 2.560 65.00 | 1.660 42.20 | 2.500 63.50 | 2.500 63.50 | 4 | 0.750 19.00 | 3.880 98.50 | 2.03 |
| 1½ | 1.900 48.30 | 6.120 155.4 | 1.610 40.90 | 0.810 20.60 | 2.690 68.30 | 1.900 48.30 | 2.750 69.85 | 2.880 73.15 | 4 | 0.880 22.30 | 4.500 114.3 | 2.89 |
| 2 | 2.375 60.30 | 6.500 165.1 | 2.070 52.60 | 0.880 22.30 | 2.750 69.85 | 2.380 60.45 | 3.310 84.00 | 3.620 91.90 | 8 | 0.750 19.00 | 5.000 127.0 | 3.40 |
| 2½ | 2.875 73.00 | 7.500 190.5 | 2.470 62.70 | 1.000 25.40 | 3.000 76.20 | 2.880 73.15 | 3.940 100.0 | 4.120 104.6 | 8 | 0.880 22.30 | 5.880 149.3 | 5.17 |
| 3 | 3.500 88.90 | 8.250 209.5 | 3.070 78.00 | 1.120 28.40 | 3.120 79.25 | 3.500 88.90 | 4.620 117.3 | 5.000 127.0 | 8 | 0.880 22.30 | 6.620 168.1 | 6.93 |
| 3½ | 4.000 101.6 | 9.000 228.6 | 3.550 90.20 | 1.190 30.20 | 3.190 81.00 | 4.000 101.6 | 5.250 133.3 | 5.500 139.7 | 8 | 0.880 22.30 | 7.250 184.1 | 8.67 |
| 4 | 4.500 114.3 | 10.00 254.0 | 4.030 102.4 | 1.250 31.70 | 3.380 85.80 | 4.500 114.3 | 5.750 146.0 | 6.190 157.2 | 8 | 0.880 22.30 | 7.880 200.1 | 11.2 |
| 5 | 5.563 141.3 | 11.00 279.4 | 5.050 128.3 | 1.380 35.00 | 3.880 98.50 | 5.560 141.2 | 7.000 177.8 | 7.310 185.7 | 8 | 0.880 22.30 | 9.250 234.9 | 15.1 |
| 6 | 6.625 168.3 | 12.50 317.5 | 6.070 154.2 | 1.440 36.50 | 3.880 98.50 | 6.630 168.4 | 8.120 206.2 | 8.500 215.9 | 12 | 0.880 22.30 | 10.62 269.7 | 19.1 |
| 8 | 8.625 219.1 | 15.00 381.0 | 7.980 202.7 | 1.620 41.10 | 4.380 111.2 | 8.630 219.2 | 10.25 260.3 | 10.62 269.7 | 12 | 1.000 25.40 | 13.00 330.2 | 29.9 |
| 10 | 10.75 273.0 | 17.50 444.5 | 10.02 254.5 | 1.880 47.70 | 4.620 117.3 | 10.75 273.0 | 12.62 320.5 | 12.75 323.8 | 16 | 1.120 28.40 | 15.25 387.3 | 42.7 |
| 12 | 12.75 323.8 | 20.50 520.7 | 12.00 304.8 | 2.000 50.80 | 5.120 130.0 | 12.75 323.8 | 14.75 374.6 | 15.00 381.0 | 16 | 1.250 31.70 | 17.75 450.8 | 61.8 |
| 14 | 14.00 355.6 | 23.00 584.2 | To be specified by purchaser | 2.120 53.80 | 5.620 142.7 | 14.00 355.6 | 16.75 425.4 | 16.25 412.7 | 20 | 1.250 31.70 | 20.25 514.3 | 85.8 |
| 16 | 16.00 406.4 | 25.50 647.7 | 2.250 57.15 | 5.750 146.0 | 16.00 406.4 | 19.00 482.6 | 18.50 469.9 | 20 | 1.380 35.00 | 22.50 571.5 | 106 | |
| 18 | 18.00 457.2 | 28.00 711.2 | 2.380 60.45 | 6.250 158.7 | 18.00 457.2 | 21.00 533.4 | 21.00 533.4 | 24 | 1.380 35.00 | 24.75 628.6 | 131 | |
| 20 | 20.00 508.0 | 30.50 774.7 | 2.500 63.50 | 6.380 162.0 | 20.00 508.0 | 23.12 587.2 | 23.00 584.2 | 24 | 1.380 35.00 | 27.00 685.8 | 158 | |
| 24 | 24.00 609.6 | 36.00 914.4 | 2.750 69.85 | 6.620 168.1 | 24.00 609.6 | 27.62 701.5 | 27.25 692.1 | 24 | 1.620 41.10 | 32.00 812.8 | 230 | |
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)
Materials of ANSI/ASME B16.5 weld neck flange:
carbon steel:
ASTM A105,A350 LF2,SS400,P235GH,P250GH,C22.8,Q235,20#,16Mn,etc.
stainless steel:
ASTM A182 F304,F304L,F316,F316L,F321,F347,F310,F44,F51,etc.
alloy steel:
ASTM A694 F42,F46,F52,F56,F60,F65,F70,A182 F5,F9,F91,F12,F11,F22,etc.
Haihao Group is one of the biggest forged flanges manufacture in China,our products contain weld neck flange,slip on flange,blind flange,flat flange,threaded flange,lap joint flange,socket weld flange,etc.We produce the forged flanges in different standards such as ANSI/ASME B16.5,B16.36,B16.47,B16.48,AWWA C207,API 6A/6B/6BX,DIN 2527,DIN 2573,DIN 2576,DIN 2631,DIN 2632,DIN 2633,DIN 2634,DIN 2635,DIN 2566,DIN 2642,EN 1092,BS 4504,JIS B2220,GOST 12820,GOST 12821,SABS 1123,AS 1219 etc.If you want to know more about our forged flanges,please email us:sales@haihaogroup.com