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Lap Joint
This product is available in steel, stainless steel, carbon, nickel alloys, aluminum and exotic materials.
Description
Dimensions
- Diameter : 1/2″ to 24″
- Pressure class : 150# – 300# – 600# – 1500#
- Schedules : SCH10S – SCH40S – SCH80S – SCH160
Variations
- Finishes : Raised face (RF) – Flat face (FF) – RTJ – …
- Variants :Long Welding Neck – Reducing Welding neck – Orifice Welding Neck
Reference standards
- ASTM A182 – ASME SA182 – Forged or Rolled Alloy and STainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service'
- ASTM A105 – ASME SA105 – Carbon Steel Forgings for Piping Applications'
- ASTM A181 – ASME SA181 – Carbon Steel Forgings, for General-Purpose Piping'
- ASTM B564 – ASME SB564 – 'Nickel Alloy Forgings'
- ASTM B381 – ASME SB381 – Titanium and Titanium Alloy Forgings'
- ASME B16.5 – 'Pipe Flanges and Flanged Fittings'
- ASME B16.36 – 'Orifice Flanges'
- ASME B16.47 – 'Large Diameter Steel Flanges NPS26 Through NPS60'
- MSS SP-6 – Standard Finishes for Contact Faces of Pipe Flanges and Connecting End Flanges of Valves and Fittings'
The tables below show the most common dimensions, but are not exhaustive.
150 LBS
| Drilling | ||||||||
|---|---|---|---|---|---|---|---|---|
| Nominal Bore | Dia. (D) |
Thick. (E) |
Dia. (B) |
Dia. (A) |
Height (H) |
Nbr | Holes | Dia. (C) |
| 1/2″ | 90 | 11.2 | 30 | 22.9 | 16 | 4 | 15.87 | 60.3 |
| 3/4″ | 100 | 12.7 | 38 | 28.2 | 16 | 4 | 15.87 | 69.9 |
| 1″ | 110 | 14.3 | 49 | 34.9 | 17 | 4 | 15.87 | 79.4 |
| 1 1/4″ | 115 | 15.9 | 59 | 43.7 | 21 | 4 | 15.87 | 88.9 |
| 1 1/2″ | 125 | 17.5 | 65 | 50.0 | 22 | 4 | 15.87 | 98.4 |
| 2″ | 150 | 20.7 | 78 | 62.5 | 25 | 4 | 19.05 | 120.7 |
| 2 1/2″ | 180 | 22.3 | 90 | 75.4 | 29 | 4 | 19.05 | 139.7 |
| 3″ | 190 | 23.9 | 108 | 91.4 | 30 | 4 | 19.05 | 152.4 |
| 3 1/2″ | 215 | 23.9 | 122 | 104.1 | 32 | 8 | 19.05 | 177.8 |
| 4″ | 230 | 23.9 | 135 | 116.8 | 33 | 8 | 19.05 | 190.5 |
| 5″ | 255 | 23.9 | 164 | 144.4 | 36 | 8 | 22.22 | 215.9 |
| 6″ | 280 | 25.4 | 192 | 171.4 | 40 | 8 | 22.22 | 241.3 |
| 8″ | 345 | 28.6 | 246 | 222.2 | 44 | 8 | 22.22 | 298.5 |
| 10″ | 405 | 30.2 | 305 | 277.4 | 49 | 12 | 25.40 | 362.0 |
| 12″ | 485 | 31.8 | 365 | 328.2 | 56 | 12 | 25.40 | 431.8 |
| 14″ | 535 | 35.0 | 400 | 360.2 | 79 | 12 | 28.57 | 476.3 |
| 16″ | 595 | 36.6 | 457 | 411.2 | 87 | 16 | 28.57 | 539.8 |
| 18″ | 635 | 39.7 | 505 | 462.3 | 97 | 16 | 31.75 | 577.9 |
| 20″ | 700 | 42.9 | 559 | 514.4 | 103 | 20 | 31.75 | 635.0 |
| 24″ | 815 | 47.7 | 663 | 616.0 | 111 | 20 | 34.92 | 749.3 |
Raised face of 1.6mm not included in dimensions E
Dimensions are in millimeters
Source: ASME B16.9 – 2007
300 LBS
| Drilling | ||||||||
|---|---|---|---|---|---|---|---|---|
| Nominal Bore | Dia. (D) |
Thick. (E) |
Dia. (B) |
Dia. (A) |
Height (H) |
Nbr | Holes | Dia. (C) |
| 1/2″ | 95 | 14.3 | 38 | 22.9 | 22 | 4 | 15.87 | 66.7 |
| 3/4″ | 115 | 15.9 | 48 | 28.2 | 25 | 4 | 19.05 | 82.6 |
| 1″ | 125 | 17.5 | 54 | 34.9 | 27 | 4 | 19.05 | 88.9 |
| 1 1/4″ | 135 | 19.1 | 64 | 43.7 | 27 | 4 | 19.05 | 98.4 |
| 1 1/2″ | 155 | 20.7 | 70 | 50.0 | 30 | 4 | 22.22 | 114.3 |
| 2″ | 165 | 22.3 | 84 | 62.5 | 33 | 8 | 19.05 | 127.0 |
| 2 1/2″ | 190 | 25.4 | 100 | 75.4 | 38 | 8 | 22.22 | 149.2 |
| 3″ | 210 | 28.6 | 117 | 91.4 | 43 | 8 | 22.22 | 168.3 |
| 3 1/2″ | 230 | 30.2 | 133 | 104.1 | 44 | 8 | 22.22 | 184.2 |
| 4″ | 255 | 31.8 | 146 | 116.8 | 48 | 8 | 22.22 | 200.0 |
| 5″ | 280 | 35.0 | 178 | 144.4 | 51 | 8 | 22.22 | 235.0 |
| 6″ | 320 | 36.6 | 206 | 171.4 | 52 | 12 | 22.22 | 269.9 |
| 8″ | 380 | 41.3 | 260 | 222.2 | 62 | 12 | 25.40 | 330.2 |
| 10″ | 445 | 47.7 | 321 | 277.4 | 95 | 16 | 28.57 | 387.4 |
| 12″ | 520 | 50.8 | 375 | 328.2 | 102 | 16 | 31.75 | 450.8 |
| 14″ | 585 | 54.0 | 425 | 360.2 | 111 | 20 | 31.75 | 514.4 |
| 16″ | 650 | 57.2 | 483 | 411.2 | 121 | 20 | 34.29 | 571.5 |
| 18″ | 710 | 60.4 | 533 | 462.3 | 130 | 24 | 34.29 | 628.6 |
| 20″ | 775 | 63.5 | 587 | 514.4 | 140 | 24 | 34.29 | 685.8 |
| 24″ | 915 | 69.9 | 702 | 616.0 | 152 | 24 | 41.27 | 812.8 |
Raised face of 1.6mm not included in dimensions E
Dimensions are in millimeters
Source: ASME B16.9 – 2007
600 LBS
| Drilling | ||||||||
|---|---|---|---|---|---|---|---|---|
| Nominal Bore | Dia. (D) |
Thick. (E) |
Dia. (B) |
Dia. (A) |
Height (H) |
Nbr | Holes | Dia. (C) |
| 1/2″ | 95 | 14.3 | 38 | 23.6 | 22 | 4 | 15.87 | 66.7 |
| 3/4″ | 115 | 15.9 | 48 | 29.0 | 25 | 4 | 19.05 | 82.6 |
| 1″ | 125 | 17.5 | 54 | 35.8 | 27 | 4 | 19.05 | 88.9 |
| 1 1/4″ | 135 | 20.7 | 64 | 44.4 | 29 | 4 | 19.05 | 98.4 |
| 1 1/2″ | 155 | 22.3 | 70 | 50.6 | 32 | 4 | 22.22 | 114.3 |
| 2″ | 165 | 25.4 | 84 | 63.5 | 37 | 8 | 19.05 | 127.0 |
| 2 1/2″ | 190 | 28.6 | 100 | 76.2 | 41 | 8 | 22.22 | 149.2 |
| 3″ | 210 | 31.8 | 117 | 92.2 | 46 | 8 | 22.22 | 168.3 |
| 3 1/2″ | 230 | 35.0 | 133 | 104.9 | 49 | 8 | 25.40 | 184.2 |
| 4″ | 275 | 38.1 | 152 | 117.6 | 54 | 8 | 25.40 | 215.9 |
| 5″ | 330 | 44.5 | 189 | 144.4 | 60 | 8 | 28.57 | 266.7 |
| 6″ | 355 | 47.7 | 222 | 171.4 | 67 | 12 | 28.57 | 292.1 |
| 8″ | 420 | 55.6 | 273 | 222.2 | 76 | 12 | 31.75 | 349.2 |
| 10″ | 510 | 63.5 | 343 | 276.2 | 111 | 16 | 34.92 | 431.8 |
| 12″ | 560 | 66.7 | 400 | 328.6 | 117 | 20 | 34.92 | 489.0 |
| 14″ | 605 | 69.9 | 432 | 360.4 | 127 | 20 | 38.10 | 527.0 |
| 16″ | 685 | 76.2 | 495 | 411.2 | 140 | 20 | 41.27 | 603.2 |
| 18″ | 745 | 82.6 | 546 | 462.0 | 152 | 20 | 44.45 | 6654.0 |
| 20″ | 815 | 88.9 | 610 | 512.8 | 165 | 24 | 44.45 | 723.9 |
| 24″ | 940 | 101.6 | 718 | 614.4 | 184 | 24 | 50.80 | 838.2 |
Raised face of 1.6mm not included in dimensions E
Dimensions are in millimeters
Source: ASME B16.9 – 2007