Lap Joint Flange
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1. Materials:
Carbon Steel: ASTM A105, ASTM A350 LF1, LF2, LF3, A36, 16Mn, etc
Stainless Steel: ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L
Alloy Steel: A182 F1, F5, F9, F11, F12, 22, F22, F91, etc
Duplex Stainless Steel: ASTM A 182 – F51, F53, F55, S31803, S32205, S32550, S31254, SMO254, S32750, S32760, S32950.
Copper Alloy Steel: ASTM / ASME SB 111 UNS NO. C 10100, C 10200, C 10300, C 10800, C 12000, C 12200, C 70600, C 71500, ASTM / ASME SB 466 UNS NO. C 70600 ( CU -NI- 90/10), C 71500 ( CU -NI- 70/30)
Nickel Alloy: ASTM / ASME SB 336, ASTM / ASME SB 564 / 160 / 163 / 472, UNS 2200 (NICKEL 200), UNS 2201 (NICKEL 201 ), UNS 4400 (MONEL 400 ), UNS 8020 ( ALLOY 20 / 20 CB 3 ), UNS 8825 INCONEL (825), UNS 6600 (INCONEL 600 ), UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C 276)
1. Materials:
Carbon Steel: ASTM A105, ASTM A350 LF1, LF2, LF3, A36, 16Mn, etc
Stainless Steel: ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L
Alloy Steel: A182 F1, F5, F9, F11, F12, 22, F22, F91, etc
Duplex Stainless Steel: ASTM A 182 – F51, F53, F55, S31803, S32205, S32550, S31254, SMO254, S32750, S32760, S32950.
Copper Alloy Steel: ASTM / ASME SB 111 UNS NO. C 10100, C 10200, C 10300, C 10800, C 12000, C 12200, C 70600, C 71500, ASTM / ASME SB 466 UNS NO. C 70600 ( CU -NI- 90/10), C 71500 ( CU -NI- 70/30)
Nickel Alloy: ASTM / ASME SB 336, ASTM / ASME SB 564 / 160 / 163 / 472, UNS 2200 (NICKEL 200), UNS 2201 (NICKEL 201 ), UNS 4400 (MONEL 400 ), UNS 8020 ( ALLOY 20 / 20 CB 3 ), UNS 8825 INCONEL (825), UNS 6600 (INCONEL 600 ), UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C 276)
For detial dimensions and catalogue of Reducing Flanges please contact with us now sales@attpipeline.com
2. Standards:
ANSI/ASME B16.5, B16.36, B16.47, AWWA C207, DIN, BS, SABS/SANS, MSS SP44, ISO, API Flange, etc
Dimensions & Masses of B16.5 Lap Joint Flange Class 150/300/600/900/1500/2500
| ANSI, ASME, ASA, B16.5 150lb/sq.in. Lap Joint Flange | ||||||||||||
| Nominal Size | Outside Diam. | Thick. of Flange | Diam of Hub at Base | Length Thru Hub | Diam. of Bore | Fillet Radius | No. of Holes | Diam. of Holes | Diam. of Bolts | Diam. of Bolt Circle | Approx. Weight Pounds | |
| O | C | X | Y | B | r | Kg | ||||||
| 1/2" | in. | 3.5 | 0.44 | 1.19 | 0.62 | 0.9 | 0.12 | 4 | 0.62 | 1/2 | 2.38 | 1 |
| mm. | 88.9 | 11.2 | 30.2 | 15.7 | 22.9 | 3 | 15.7 | 12.7 | 60.5 | 0.5 | ||
| 3/4" | in. | 3.88 | 0.5 | 1.5 | 0.62 | 1.11 | 0.12 | 4 | 0.62 | 1/2 | 2.75 | 2 |
| mm. | 98.6 | 12.7 | 38.1 | 15.7 | 28.2 | 3 | 15.7 | 12.7 | 69.9 | 1 | ||
| 1" | in. | 4.25 | 0.56 | 1.94 | 0.69 | 1.38 | 0.12 | 4 | 0.62 | 1/2 | 3.12 | 2 |
| mm. | 108 | 14.2 | 49.3 | 17.5 | 35.1 | 3 | 15.7 | 12.7 | 79.2 | 1 | ||
| 1 1/4" | in. | 4.62 | 0.62 | 2.31 | 0.81 | 1.72 | 0.19 | 4 | 0.62 | 1/2 | 3.5 | 3 |
| mm. | 117.3 | 15.7 | 58.7 | 20.6 | 43.7 | 4.8 | 15.7 | 12.7 | 88.9 | 1 | ||
| 1 1/2" | in. | 5 | 0.69 | 2.56 | 0.88 | 1.97 | 0.25 | 4 | 0.62 | 1/2 | 3.88 | 3 |
| mm. | 127 | 17.5 | 65 | 22.4 | 50 | 6.4 | 15.7 | 12.7 | 98.6 | 1 | ||
| 2" | in. | 6 | 0.75 | 3.06 | 1 | 2.46 | 0.31 | 4 | 0.75 | 5/8 | 4.75 | 5 |
| mm. | 152.4 | 19.1 | 77.7 | 25.4 | 62.5 | 7.9 | 19.1 | 15.9 | 120.7 | 2 | ||
| 2 1/2" | in. | 7 | 0.88 | 3.56 | 1.12 | 2.97 | 0.31 | 4 | 0.75 | 5/8 | 5.5 | 7 |
| mm. | 177.8 | 22.4 | 90.4 | 28.4 | 75.4 | 7.9 | 19.1 | 15.9 | 139.7 | 3 | ||
| 3" | in. | 7.5 | 0.94 | 4.25 | 1.19 | 3.6 | 0.38 | 4 | 0.75 | 5/8 | 6 | 8 |
| mm. | 190.5 | 23.9 | 108 | 30.2 | 91.4 | 9.7 | 19.1 | 15.9 | 152.4 | 4 | ||
| 3 1/2" | in. | 8.5 | 0.94 | 4.81 | 1.25 | 4.1 | 0.38 | 8 | 0.75 | 5/8 | 7 | 11 |
| mm. | 215.9 | 23.9 | 122.2 | 31.8 | 104.1 | 9.7 | 19.1 | 15.9 | 177.8 | 5 | ||
| 4" | in. | 9 | 0.94 | 5.31 | 1.31 | 4.6 | 0.44 | 8 | 0.75 | 5/8 | 7.5 | 13 |
| mm. | 228.6 | 23.9 | 134.9 | 33.3 | 116.8 | 11.2 | 19.1 | 15.9 | 190.5 | 6 | ||
| 5" | in. | 10 | 0.94 | 6.44 | 1.44 | 5.69 | 0.44 | 8 | 0.88 | 3/4 | 8.5 | 15 |
| mm. | 254 | 23.9 | 163.6 | 36.6 | 144.5 | 11.2 | 22.4 | 19.1 | 215.9 | 7 | ||
| 6" | in. | 11 | 1 | 7.56 | 1.56 | 6.75 | 0.5 | 8 | 0.88 | 3/4 | 9.5 | 19 |
| mm. | 279.4 | 25.4 | 192 | 39.6 | 171.5 | 12.7 | 22.4 | 19.1 | 241.3 | 9 | ||
| 8" | in. | 13.5 | 1.12 | 9.69 | 1.75 | 8.75 | 0.5 | 8 | 0.88 | 3/4 | 11.75 | 30 |
| mm. | 342.9 | 28.4 | 246.1 | 44.5 | 222.3 | 12.7 | 22.4 | 19.1 | 298.5 | 14 | ||
| 10" | in. | 16 | 1.19 | 12 | 1.94 | 10.92 | 0.5 | 12 | 1 | 7/8 | 14.25 | 43 |
| mm. | 406.4 | 30.2 | 304.8 | 49.3 | 277.4 | 12.7 | 25.4 | 22.2 | 362 | 20 | ||
| 12" | in. | 19 | 1.25 | 14.38 | 2.19 | 12.92 | 0.5 | 12 | 1 | 7/8 | 17 | 64 |
| mm. | 482.6 | 31.8 | 365.3 | 55.6 | 328.2 | 12.7 | 25.4 | 22.2 | 431.8 | 29 | ||
| 14" | in. | 21 | 1.38 | 15.75 | 3.12 | 14.18 | 0.5 | 12 | 1.12 | 1 | 18.75 | 105 |
| mm. | 533.4 | 35.1 | 400.1 | 79.2 | 360.2 | 12.7 | 28.4 | 25.4 | 476.3 | 48 | ||
| 16" | in. | 23.5 | 1.44 | 18 | 3.44 | 16.19 | 0.5 | 16 | 1.12 | 1 | 21.25 | 140 |
| mm. | 596.9 | 36.6 | 457.2 | 87.4 | 411.2 | 12.7 | 28.4 | 25.4 | 539.8 | 64 | ||
| 18" | in. | 25 | 1.56 | 19.88 | 3.81 | 18.2 | 0.5 | 16 | 1.25 | 1 1/8 | 22.75 | 160 |
| mm. | 635 | 39.6 | 505 | 96.8 | 462.3 | 12.7 | 31.8 | 28.6 | 577.9 | 73 | ||
| 20" | in. | 27.5 | 1.69 | 22 | 4.06 | 20.25 | 0.5 | 20 | 1.25 | 1 1/8 | 25 | 195 |
| mm. | 698.5 | 42.9 | 558.8 | 103.1 | 514.4 | 12.7 | 31.8 | 28.6 | 635 | 88 | ||
| 24" | in. | 32 | 1.88 | 26.12 | 4.38 | 24.25 | 0.5 | 20 | 1.38 | 1 1/4 | 29.5 | 275 |
| mm. | 812.8 | 47.8 | 663.4 | 111.3 | 616 | 12.7 | 35.1 | 31.8 | 749.3 | 125 | ||
| ANSI, ASME, ASA, B16.5 300lb/sq.in. Lap Joint Flange | ||||||||||||
| Nominal Size | Outside diam. of | Thick. of Flange | Diam of Hub at Base | Length Thru Hub | Diam. of Bore | Fillet Radius | No. of Holes | Diam. of Holes | Diam. of Bolts | Diam. of Bolt Circle | Approx. Weight Pounds | |
| Flange | ||||||||||||
| O | C | X | Y | B | r | Kg | ||||||
| 1/2" | in. | 3.75 | 0.56 | 1.5 | 0.88 | 0.9 | 0.12 | 4 | 0.62 | 1/2 | 2.62 | 2 |
| mm. | 95.3 | 14.2 | 38.1 | 22.4 | 22.9 | 3 | 15.7 | 12.7 | 66.5 | 1 | ||
| 3/4" | in. | 4.62 | 0.62 | 1.88 | 1 | 1.11 | 0.12 | 4 | 0.75 | 5/8 | 3.25 | 3 |
| mm. | 117.3 | 15.7 | 47.8 | 25.4 | 28.2 | 3 | 19.1 | 15.9 | 82.6 | 1 | ||
| 1" | in. | 4.88 | 0.69 | 2.12 | 1.06 | 1.38 | 0.12 | 4 | 0.75 | 5/8 | 3.5 | 3 |
| mm. | 124 | 17.5 | 53.8 | 26.9 | 35.1 | 3 | 19.1 | 15.9 | 88.9 | 1 | ||
| 1 1/4" | in. | 5.25 | 0.75 | 2.5 | 1.06 | 1.72 | 0.19 | 4 | 0.75 | 5/8 | 3.88 | 4 |
| mm. | 133.4 | 19.1 | 63.5 | 26.9 | 43.7 | 4.8 | 19.1 | 15.9 | 98.6 | 2 | ||
| 1 1/2" | in. | 6.12 | 0.81 | 2.75 | 1.19 | 1.97 | 0.25 | 4 | 0.88 | 3/4 | 4.5 | 6 |
| mm. | 155.4 | 20.6 | 69.9 | 30.2 | 50 | 6.4 | 22.4 | 19.1 | 114.3 | 3 | ||
| 2" | in. | 6.5 | 0.88 | 3.31 | 1.31 | 2.46 | 0.31 | 8 | 0.75 | 5/8 | 5 | 7 |
| mm. | 165.1 | 22.4 | 84.1 | 33.3 | 62.5 | 7.9 | 19.1 | 15.9 | 127 | 3 | ||
| 2 1/2" | in. | 7.5 | 1 | 3.94 | 1.5 | 2.97 | 0.31 | 8 | 0.88 | 3/4 | 5.88 | 10 |
| mm. | 190.5 | 25.4 | 100.1 | 38.1 | 75.4 | 7.9 | 22.4 | 19.1 | 149.4 | 5 | ||
| 3" | in. | 8.25 | 1.12 | 4.62 | 1.69 | 3.6 | 0.38 | 8 | 0.88 | 3/4 | 6.62 | 13 |
| mm. | 209.6 | 28.4 | 117.3 | 42.9 | 91.4 | 9.7 | 22.4 | 19.1 | 168.1 | 6 | ||
| 3 1/2" | in. | 9 | 1.19 | 5.25 | 1.75 | 4.1 | 0.38 | 8 | 0.88 | 3/4 | 7.25 | 17 |
| mm. | 228.6 | 30.2 | 133.4 | 44.5 | 104.1 | 9.7 | 22.4 | 19.1 | 184.2 | 8 | ||
| 4" | in. | 10 | 1.25 | 5.75 | 1.88 | 4.6 | 0.44 | 8 | 0.88 | 3/4 | 7.88 | 22 |
| mm. | 254 | 31.8 | 146.1 | 47.8 | 116.8 | 11.2 | 22.4 | 19.1 | 200.2 | 10 | ||
| 5" | in. | 11 | 1.38 | 7 | 2 | 5.69 | 0.44 | 8 | 0.88 | 3/4 | 9.25 | 28 |
| mm. | 279.4 | 35.1 | 177.8 | 50.8 | 144.5 | 11.2 | 22.4 | 19.1 | 235 | 13 | ||
| 6" | in. | 12.5 | 1.44 | 8.12 | 2.06 | 6.75 | 0.5 | 12 | 0.88 | 3/4 | 10.62 | 39 |
| mm. | 317.5 | 36.6 | 206.2 | 52.3 | 171.5 | 12.7 | 22.4 | 19.1 | 269.7 | 18 | ||
| 8" | in. | 15 | 1.62 | 10.25 | 2.44 | 8.75 | 0.5 | 12 | 1 | 7/8 | 13 | 58 |
| mm. | 381 | 41.1 | 260.4 | 62 | 222.3 | 12.7 | 25.4 | 22.2 | 330.2 | 26 | ||
| 10" | in. | 17.5 | 1.88 | 12.62 | 3.75 | 10.92 | 0.5 | 16 | 1.12 | 1 | 15.25 | 91 |
| mm. | 444.5 | 47.8 | 320.5 | 95.3 | 277.4 | 12.7 | 28.4 | 25.4 | 387.4 | 41 | ||
| 12" | in. | 20.5 | 2 | 14.75 | 4 | 12.92 | 0.5 | 16 | 1.25 | 1 1/8 | 17.75 | 140 |
| mm. | 520.7 | 50.8 | 374.7 | 101.6 | 328.2 | 12.7 | 31.8 | 28.6 | 450.9 | 64 | ||
| 14" | in. | 23 | 2.12 | 16.75 | 4.38 | 14.18 | 0.5 | 20 | 1.25 | 1 1/8 | 20.25 | 190 |
| mm. | 584.2 | 53.8 | 425.5 | 111.3 | 360.2 | 12.7 | 31.8 | 28.6 | 514.4 | 86 | ||
| 16" | in. | 25.5 | 2.25 | 19 | 4.75 | 16.19 | 0.5 | 20 | 1.38 | 1 1/4 | 22.5 | 250 |
| mm. | 647.7 | 57.2 | 482.6 | 120.7 | 411.2 | 12.7 | 35.1 | 31.8 | 571.5 | 113 | ||
| 18" | in. | 28 | 2.38 | 21 | 5.12 | 18.2 | 0.5 | 24 | 1.38 | 1 1/4 | 24.75 | 295 |
| mm. | 711.2 | 60.5 | 533.4 | 130 | 462.3 | 12.7 | 35.1 | 31.8 | 628.7 | 134 | ||
| 20" | in. | 30.5 | 2.5 | 23.12 | 5.5 | 20.25 | 0.5 | 24 | 1.38 | 1 1/4 | 27 | 370 |
| mm. | 774.7 | 63.5 | 587.2 | 139.7 | 514.4 | 12.7 | 35.1 | 31.8 | 685.8 | 168 | ||
| 24" | in. | 36 | 2.75 | 27.62 | 6 | 24.25 | 0.5 | 24 | 1.62 | 1 1/2 | 32 | 550 |
| mm. | 914.4 | 69.9 | 701.5 | 152.4 | 616 | 12.7 | 41.1 | 38.1 | 812.8 | 249 | ||
| ANSI, ASME, ASA, B16.5 600lb/sq.in. Lap Joint Flange | ||||||||||||
| Nominal size | Outside diam. of | Thick. of flange | Diam of hub at base | Length thru hub | Diam. of bore | Fillet radius | No. of holes | Diam. of holes | Diam. of bolts | Diam. of bolt circle | Approx. weight pounds | |
| flange | ||||||||||||
| O | C | X | Y | B | r | Kg | ||||||
| 1/2" | in. | 3.75 | 0.56 | 1.5 | 0.88 | 0.9 | 0.12 | 4 | 0.62 | 1/2 | 2.62 | 2 |
| mm. | 95.3 | 14.2 | 38.1 | 22.4 | 22.9 | 3 | 15.7 | 12.7 | 66.5 | 1 | ||
| 3/4" | in. | 4.62 | 0.62 | 1.88 | 1 | 1.11 | 0.12 | 4 | 0.75 | 5/8 | 3.25 | 3 |
| mm. | 117.3 | 15.7 | 47.8 | 25.4 | 28.2 | 3 | 19.1 | 15.9 | 82.6 | 1 | ||
| 1" | in. | 4.88 | 0.69 | 2.12 | 1.06 | 1.38 | 0.12 | 4 | 0.75 | 5/8 | 3.5 | 4 |
| mm. | 124 | 17.5 | 53.8 | 26.9 | 35.1 | 3 | 19.1 | 15.9 | 88.9 | 2 | ||
| 1 1/4" | in. | 5.25 | 0.81 | 2.5 | 1.12 | 1.72 | 0.19 | 4 | 0.75 | 5/8 | 3.88 | 5 |
| mm. | 133.4 | 20.6 | 63.5 | 28.4 | 43.7 | 4.8 | 19.1 | 15.9 | 98.6 | 2 | ||
| 1 1/2" | in. | 6.12 | 0.88 | 2.75 | 1.25 | 1.97 | 0.25 | 4 | 0.88 | 3/4 | 4.5 | 7 |
| mm. | 155.4 | 22.4 | 69.9 | 31.8 | 50 | 6.4 | 22.4 | 19.1 | 114.3 | 3 | ||
| 2" | in. | 6.5 | 1 | 3.31 | 1.44 | 2.46 | 0.31 | 8 | 0.75 | 5/8 | 5 | 9 |
| mm. | 165.1 | 25.4 | 84.1 | 36.6 | 62.5 | 7.9 | 19.1 | 15.9 | 127 | 4 | ||
| 2 1/2" | in. | 7.5 | 1.12 | 3.94 | 1.62 | 2.97 | 0.31 | 8 | 0.88 | 3/4 | 5.88 | 12 |
| mm. | 190.5 | 28.4 | 100.1 | 41.1 | 75.4 | 7.9 | 22.4 | 19.1 | 149.4 | 5 | ||
| 3" | in. | 8.25 | 1.25 | 4.62 | 1.81 | 3.6 | 0.38 | 8 | 0.88 | 3/4 | 6.62 | 15 |
| mm. | 209.6 | 31.8 | 117.3 | 46 | 91.4 | 9.7 | 22.4 | 19.1 | 168.1 | 7 | ||
| 3 1/2" | in. | 9 | 1.38 | 5.25 | 1.94 | 4.1 | 0.38 | 8 | 1 | 7/8 | 7.25 | 20 |
| mm. | 228.6 | 35.1 | 133.4 | 49.3 | 104.1 | 9.7 | 25.4 | 22.2 | 184.2 | 9 | ||
| 4" | in. | 10.75 | 1.5 | 6 | 2.12 | 4.6 | 0.44 | 8 | 1 | 7/8 | 8.5 | 36 |
| mm. | 273.1 | 38.1 | 152.4 | 53.8 | 116.8 | 11.2 | 25.4 | 22.2 | 215.9 | 16 | ||
| 5" | in. | 13 | 1.75 | 7.44 | 2.38 | 5.69 | 0.44 | 8 | 1.12 | 1 | 10.5 | 61 |
| mm. | 330.2 | 44.5 | 189 | 60.5 | 144.5 | 11.2 | 28.4 | 25.4 | 266.7 | 28 | ||
| 6" | in. | 14 | 1.88 | 8.75 | 2.62 | 6.75 | 0.5 | 12 | 1.12 | 1 | 11.5 | 78 |
| mm. | 355.6 | 47.8 | 222.3 | 66.5 | 171.5 | 12.7 | 28.4 | 25.4 | 292.1 | 35 | ||
| 8" | in. | 16.5 | 2.19 | 10.75 | 3 | 8.75 | 0.5 | 12 | 1.25 | 1 1/8 | 13.75 | 110 |
| mm. | 419.1 | 55.6 | 273.1 | 76.2 | 222.3 | 12.7 | 31.8 | 28.6 | 349.3 | 50 | ||
| 10" | in. | 20 | 2.5 | 13.5 | 4.38 | 10.92 | 0.5 | 16 | 1.38 | 1 1/4 | 17 | 170 |
| mm. | 508 | 63.5 | 342.9 | 111.3 | 277.4 | 12.7 | 35.1 | 31.8 | 431.8 | 77 | ||
| 12" | in. | 22 | 2.62 | 15.75 | 4.62 | 12.92 | 0.5 | 20 | 1.38 | 1 1/4 | 19.25 | 200 |
| mm. | 558.8 | 66.5 | 400.1 | 117.3 | 328.2 | 12.7 | 35.1 | 31.8 | 489 | 91 | ||
| 14" | in. | 23.75 | 2.75 | 17 | 5 | 14.18 | 0.5 | 20 | 1.5 | 1 3/8 | 20.75 | 250 |
| mm. | 603.3 | 69.9 | 431.8 | 127 | 360.2 | 12.7 | 38.1 | 34.9 | 527.1 | 113 | ||
| 16" | in. | 27 | 3 | 19.5 | 5.5 | 16.19 | 0.5 | 20 | 1.62 | 1 1/2 | 23.75 | 365 |
| mm. | 685.8 | 76.2 | 495.3 | 139.7 | 411.2 | 12.7 | 41.1 | 38.1 | 603.3 | 166 | ||
| 18" | in. | 29.25 | 3.25 | 21.5 | 6 | 18.2 | 0.5 | 20 | 1.75 | 1 5/8 | 25.75 | 435 |
| mm. | 743 | 82.6 | 546.1 | 152.4 | 462.3 | 12.7 | 44.5 | 41.3 | 654.1 | 197 | ||
| 20" | in. | 32 | 3.5 | 24 | 6.5 | 20.25 | 0.5 | 24 | 1.75 | 1 5/8 | 28.5 | 570 |
| mm. | 812.8 | 88.9 | 609.6 | 165.1 | 514.4 | 12.7 | 44.5 | 41.3 | 723.9 | 259 | ||
| 24" | in. | 37 | 4 | 28.25 | 7.25 | 24.25 | 0.5 | 24 | 2 | 1 7/8 | 33 | 810 |
| mm. | 939.8 | 101.6 | 717.6 | 184.2 | 616 | 12.7 | 50.8 | 47.6 | 838.2 | 367 | ||
NOTE:
1. Class 600 flanges except Lap Joint will be furnished with 0.25 (6.35mm) raised face, which is not included in ‘Thickness’ (C) and ‘Length through Hub’ (Y1), (Y3).
2. For Slip-on, Threaded, Socket Welding and Lap Joint Flanges, the hubs can be shaped either vertical from base to top or tapered within the limits of 7 degrees.
3. Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.
4. The gasket surface and backside (bearing surface for bolting) are made parallel within 1 degree. To accomplish parallelism, spot facing is carried out according to MSS SP-9, without reducing thickness (C).
5. Dimensions of sizes 1/2 through 3 1/2 are the same as for Class 400 Flanges.
6. Depth of Socket (D) is covered by ANSI B 16.5 only in sizes through 3 inch, over 3 inch is at the manufacturer’s option.
2. Standards:
ANSI/ASME B16.5, B16.36, B16.47, AWWA C207, DIN, BS, SABS/SANS, MSS SP44, ISO, API Flange, etc
Dimensions & Masses of B16.5 Lap Joint Flange Class 150/300/600/900/1500/2500
| ANSI, ASME, ASA, B16.5 150lb/sq.in. Lap Joint Flange | ||||||||||||
| Nominal Size | Outside Diam. | Thick. of Flange | Diam of Hub at Base | Length Thru Hub | Diam. of Bore | Fillet Radius | No. of Holes | Diam. of Holes | Diam. of Bolts | Diam. of Bolt Circle | Approx. Weight Pounds | |
| O | C | X | Y | B | r | Kg | ||||||
| 1/2" | in. | 3.5 | 0.44 | 1.19 | 0.62 | 0.9 | 0.12 | 4 | 0.62 | 1/2 | 2.38 | 1 |
| mm. | 88.9 | 11.2 | 30.2 | 15.7 | 22.9 | 3 | 15.7 | 12.7 | 60.5 | 0.5 | ||
| 3/4" | in. | 3.88 | 0.5 | 1.5 | 0.62 | 1.11 | 0.12 | 4 | 0.62 | 1/2 | 2.75 | 2 |
| mm. | 98.6 | 12.7 | 38.1 | 15.7 | 28.2 | 3 | 15.7 | 12.7 | 69.9 | 1 | ||
| 1" | in. | 4.25 | 0.56 | 1.94 | 0.69 | 1.38 | 0.12 | 4 | 0.62 | 1/2 | 3.12 | 2 |
| mm. | 108 | 14.2 | 49.3 | 17.5 | 35.1 | 3 | 15.7 | 12.7 | 79.2 | 1 | ||
| 1 1/4" | in. | 4.62 | 0.62 | 2.31 | 0.81 | 1.72 | 0.19 | 4 | 0.62 | 1/2 | 3.5 | 3 |
| mm. | 117.3 | 15.7 | 58.7 | 20.6 | 43.7 | 4.8 | 15.7 | 12.7 | 88.9 | 1 | ||
| 1 1/2" | in. | 5 | 0.69 | 2.56 | 0.88 | 1.97 | 0.25 | 4 | 0.62 | 1/2 | 3.88 | 3 |
| mm. | 127 | 17.5 | 65 | 22.4 | 50 | 6.4 | 15.7 | 12.7 | 98.6 | 1 | ||
| 2" | in. | 6 | 0.75 | 3.06 | 1 | 2.46 | 0.31 | 4 | 0.75 | 5/8 | 4.75 | 5 |
| mm. | 152.4 | 19.1 | 77.7 | 25.4 | 62.5 | 7.9 | 19.1 | 15.9 | 120.7 | 2 | ||
| 2 1/2" | in. | 7 | 0.88 | 3.56 | 1.12 | 2.97 | 0.31 | 4 | 0.75 | 5/8 | 5.5 | 7 |
| mm. | 177.8 | 22.4 | 90.4 | 28.4 | 75.4 | 7.9 | 19.1 | 15.9 | 139.7 | 3 | ||
| 3" | in. | 7.5 | 0.94 | 4.25 | 1.19 | 3.6 | 0.38 | 4 | 0.75 | 5/8 | 6 | 8 |
| mm. | 190.5 | 23.9 | 108 | 30.2 | 91.4 | 9.7 | 19.1 | 15.9 | 152.4 | 4 | ||
| 3 1/2" | in. | 8.5 | 0.94 | 4.81 | 1.25 | 4.1 | 0.38 | 8 | 0.75 | 5/8 | 7 | 11 |
| mm. | 215.9 | 23.9 | 122.2 | 31.8 | 104.1 | 9.7 | 19.1 | 15.9 | 177.8 | 5 | ||
| 4" | in. | 9 | 0.94 | 5.31 | 1.31 | 4.6 | 0.44 | 8 | 0.75 | 5/8 | 7.5 | 13 |
| mm. | 228.6 | 23.9 | 134.9 | 33.3 | 116.8 | 11.2 | 19.1 | 15.9 | 190.5 | 6 | ||
| 5" | in. | 10 | 0.94 | 6.44 | 1.44 | 5.69 | 0.44 | 8 | 0.88 | 3/4 | 8.5 | 15 |
| mm. | 254 | 23.9 | 163.6 | 36.6 | 144.5 | 11.2 | 22.4 | 19.1 | 215.9 | 7 | ||
| 6" | in. | 11 | 1 | 7.56 | 1.56 | 6.75 | 0.5 | 8 | 0.88 | 3/4 | 9.5 | 19 |
| mm. | 279.4 | 25.4 | 192 | 39.6 | 171.5 | 12.7 | 22.4 | 19.1 | 241.3 | 9 | ||
| 8" | in. | 13.5 | 1.12 | 9.69 | 1.75 | 8.75 | 0.5 | 8 | 0.88 | 3/4 | 11.75 | 30 |
| mm. | 342.9 | 28.4 | 246.1 | 44.5 | 222.3 | 12.7 | 22.4 | 19.1 | 298.5 | 14 | ||
| 10" | in. | 16 | 1.19 | 12 | 1.94 | 10.92 | 0.5 | 12 | 1 | 7/8 | 14.25 | 43 |
| mm. | 406.4 | 30.2 | 304.8 | 49.3 | 277.4 | 12.7 | 25.4 | 22.2 | 362 | 20 | ||
| 12" | in. | 19 | 1.25 | 14.38 | 2.19 | 12.92 | 0.5 | 12 | 1 | 7/8 | 17 | 64 |
| mm. | 482.6 | 31.8 | 365.3 | 55.6 | 328.2 | 12.7 | 25.4 | 22.2 | 431.8 | 29 | ||
| 14" | in. | 21 | 1.38 | 15.75 | 3.12 | 14.18 | 0.5 | 12 | 1.12 | 1 | 18.75 | 105 |
| mm. | 533.4 | 35.1 | 400.1 | 79.2 | 360.2 | 12.7 | 28.4 | 25.4 | 476.3 | 48 | ||
| 16" | in. | 23.5 | 1.44 | 18 | 3.44 | 16.19 | 0.5 | 16 | 1.12 | 1 | 21.25 | 140 |
| mm. | 596.9 | 36.6 | 457.2 | 87.4 | 411.2 | 12.7 | 28.4 | 25.4 | 539.8 | 64 | ||
| 18" | in. | 25 | 1.56 | 19.88 | 3.81 | 18.2 | 0.5 | 16 | 1.25 | 1 1/8 | 22.75 | 160 |
| mm. | 635 | 39.6 | 505 | 96.8 | 462.3 | 12.7 | 31.8 | 28.6 | 577.9 | 73 | ||
| 20" | in. | 27.5 | 1.69 | 22 | 4.06 | 20.25 | 0.5 | 20 | 1.25 | 1 1/8 | 25 | 195 |
| mm. | 698.5 | 42.9 | 558.8 | 103.1 | 514.4 | 12.7 | 31.8 | 28.6 | 635 | 88 | ||
| 24" | in. | 32 | 1.88 | 26.12 | 4.38 | 24.25 | 0.5 | 20 | 1.38 | 1 1/4 | 29.5 | 275 |
| mm. | 812.8 | 47.8 | 663.4 | 111.3 | 616 | 12.7 | 35.1 | 31.8 | 749.3 | 125 | ||
| ANSI, ASME, ASA, B16.5 300lb/sq.in. Lap Joint Flange | ||||||||||||
| Nominal Size | Outside diam. of | Thick. of Flange | Diam of Hub at Base | Length Thru Hub | Diam. of Bore | Fillet Radius | No. of Holes | Diam. of Holes | Diam. of Bolts | Diam. of Bolt Circle | Approx. Weight Pounds | |
| Flange | ||||||||||||
| O | C | X | Y | B | r | Kg | ||||||
| 1/2" | in. | 3.75 | 0.56 | 1.5 | 0.88 | 0.9 | 0.12 | 4 | 0.62 | 1/2 | 2.62 | 2 |
| mm. | 95.3 | 14.2 | 38.1 | 22.4 | 22.9 | 3 | 15.7 | 12.7 | 66.5 | 1 | ||
| 3/4" | in. | 4.62 | 0.62 | 1.88 | 1 | 1.11 | 0.12 | 4 | 0.75 | 5/8 | 3.25 | 3 |
| mm. | 117.3 | 15.7 | 47.8 | 25.4 | 28.2 | 3 | 19.1 | 15.9 | 82.6 | 1 | ||
| 1" | in. | 4.88 | 0.69 | 2.12 | 1.06 | 1.38 | 0.12 | 4 | 0.75 | 5/8 | 3.5 | 3 |
| mm. | 124 | 17.5 | 53.8 | 26.9 | 35.1 | 3 | 19.1 | 15.9 | 88.9 | 1 | ||
| 1 1/4" | in. | 5.25 | 0.75 | 2.5 | 1.06 | 1.72 | 0.19 | 4 | 0.75 | 5/8 | 3.88 | 4 |
| mm. | 133.4 | 19.1 | 63.5 | 26.9 | 43.7 | 4.8 | 19.1 | 15.9 | 98.6 | 2 | ||
| 1 1/2" | in. | 6.12 | 0.81 | 2.75 | 1.19 | 1.97 | 0.25 | 4 | 0.88 | 3/4 | 4.5 | 6 |
| mm. | 155.4 | 20.6 | 69.9 | 30.2 | 50 | 6.4 | 22.4 | 19.1 | 114.3 | 3 | ||
| 2" | in. | 6.5 | 0.88 | 3.31 | 1.31 | 2.46 | 0.31 | 8 | 0.75 | 5/8 | 5 | 7 |
| mm. | 165.1 | 22.4 | 84.1 | 33.3 | 62.5 | 7.9 | 19.1 | 15.9 | 127 | 3 | ||
| 2 1/2" | in. | 7.5 | 1 | 3.94 | 1.5 | 2.97 | 0.31 | 8 | 0.88 | 3/4 | 5.88 | 10 |
| mm. | 190.5 | 25.4 | 100.1 | 38.1 | 75.4 | 7.9 | 22.4 | 19.1 | 149.4 | 5 | ||
| 3" | in. | 8.25 | 1.12 | 4.62 | 1.69 | 3.6 | 0.38 | 8 | 0.88 | 3/4 | 6.62 | 13 |
| mm. | 209.6 | 28.4 | 117.3 | 42.9 | 91.4 | 9.7 | 22.4 | 19.1 | 168.1 | 6 | ||
| 3 1/2" | in. | 9 | 1.19 | 5.25 | 1.75 | 4.1 | 0.38 | 8 | 0.88 | 3/4 | 7.25 | 17 |
| mm. | 228.6 | 30.2 | 133.4 | 44.5 | 104.1 | 9.7 | 22.4 | 19.1 | 184.2 | 8 | ||
| 4" | in. | 10 | 1.25 | 5.75 | 1.88 | 4.6 | 0.44 | 8 | 0.88 | 3/4 | 7.88 | 22 |
| mm. | 254 | 31.8 | 146.1 | 47.8 | 116.8 | 11.2 | 22.4 | 19.1 | 200.2 | 10 | ||
| 5" | in. | 11 | 1.38 | 7 | 2 | 5.69 | 0.44 | 8 | 0.88 | 3/4 | 9.25 | 28 |
| mm. | 279.4 | 35.1 | 177.8 | 50.8 | 144.5 | 11.2 | 22.4 | 19.1 | 235 | 13 | ||
| 6" | in. | 12.5 | 1.44 | 8.12 | 2.06 | 6.75 | 0.5 | 12 | 0.88 | 3/4 | 10.62 | 39 |
| mm. | 317.5 | 36.6 | 206.2 | 52.3 | 171.5 | 12.7 | 22.4 | 19.1 | 269.7 | 18 | ||
| 8" | in. | 15 | 1.62 | 10.25 | 2.44 | 8.75 | 0.5 | 12 | 1 | 7/8 | 13 | 58 |
| mm. | 381 | 41.1 | 260.4 | 62 | 222.3 | 12.7 | 25.4 | 22.2 | 330.2 | 26 | ||
| 10" | in. | 17.5 | 1.88 | 12.62 | 3.75 | 10.92 | 0.5 | 16 | 1.12 | 1 | 15.25 | 91 |
| mm. | 444.5 | 47.8 | 320.5 | 95.3 | 277.4 | 12.7 | 28.4 | 25.4 | 387.4 | 41 | ||
| 12" | in. | 20.5 | 2 | 14.75 | 4 | 12.92 | 0.5 | 16 | 1.25 | 1 1/8 | 17.75 | 140 |
| mm. | 520.7 | 50.8 | 374.7 | 101.6 | 328.2 | 12.7 | 31.8 | 28.6 | 450.9 | 64 | ||
| 14" | in. | 23 | 2.12 | 16.75 | 4.38 | 14.18 | 0.5 | 20 | 1.25 | 1 1/8 | 20.25 | 190 |
| mm. | 584.2 | 53.8 | 425.5 | 111.3 | 360.2 | 12.7 | 31.8 | 28.6 | 514.4 | 86 | ||
| 16" | in. | 25.5 | 2.25 | 19 | 4.75 | 16.19 | 0.5 | 20 | 1.38 | 1 1/4 | 22.5 | 250 |
| mm. | 647.7 | 57.2 | 482.6 | 120.7 | 411.2 | 12.7 | 35.1 | 31.8 | 571.5 | 113 | ||
| 18" | in. | 28 | 2.38 | 21 | 5.12 | 18.2 | 0.5 | 24 | 1.38 | 1 1/4 | 24.75 | 295 |
| mm. | 711.2 | 60.5 | 533.4 | 130 | 462.3 | 12.7 | 35.1 | 31.8 | 628.7 | 134 | ||
| 20" | in. | 30.5 | 2.5 | 23.12 | 5.5 | 20.25 | 0.5 | 24 | 1.38 | 1 1/4 | 27 | 370 |
| mm. | 774.7 | 63.5 | 587.2 | 139.7 | 514.4 | 12.7 | 35.1 | 31.8 | 685.8 | 168 | ||
| 24" | in. | 36 | 2.75 | 27.62 | 6 | 24.25 | 0.5 | 24 | 1.62 | 1 1/2 | 32 | 550 |
| mm. | 914.4 | 69.9 | 701.5 | 152.4 | 616 | 12.7 | 41.1 | 38.1 | 812.8 | 249 | ||
| ANSI, ASME, ASA, B16.5 600lb/sq.in. Lap Joint Flange | ||||||||||||
| Nominal size | Outside diam. of | Thick. of flange | Diam of hub at base | Length thru hub | Diam. of bore | Fillet radius | No. of holes | Diam. of holes | Diam. of bolts | Diam. of bolt circle | Approx. weight pounds | |
| flange | ||||||||||||
| O | C | X | Y | B | r | Kg | ||||||
| 1/2" | in. | 3.75 | 0.56 | 1.5 | 0.88 | 0.9 | 0.12 | 4 | 0.62 | 1/2 | 2.62 | 2 |
| mm. | 95.3 | 14.2 | 38.1 | 22.4 | 22.9 | 3 | 15.7 | 12.7 | 66.5 | 1 | ||
| 3/4" | in. | 4.62 | 0.62 | 1.88 | 1 | 1.11 | 0.12 | 4 | 0.75 | 5/8 | 3.25 | 3 |
| mm. | 117.3 | 15.7 | 47.8 | 25.4 | 28.2 | 3 | 19.1 | 15.9 | 82.6 | 1 | ||
| 1" | in. | 4.88 | 0.69 | 2.12 | 1.06 | 1.38 | 0.12 | 4 | 0.75 | 5/8 | 3.5 | 4 |
| mm. | 124 | 17.5 | 53.8 | 26.9 | 35.1 | 3 | 19.1 | 15.9 | 88.9 | 2 | ||
| 1 1/4" | in. | 5.25 | 0.81 | 2.5 | 1.12 | 1.72 | 0.19 | 4 | 0.75 | 5/8 | 3.88 | 5 |
| mm. | 133.4 | 20.6 | 63.5 | 28.4 | 43.7 | 4.8 | 19.1 | 15.9 | 98.6 | 2 | ||
| 1 1/2" | in. | 6.12 | 0.88 | 2.75 | 1.25 | 1.97 | 0.25 | 4 | 0.88 | 3/4 | 4.5 | 7 |
| mm. | 155.4 | 22.4 | 69.9 | 31.8 | 50 | 6.4 | 22.4 | 19.1 | 114.3 | 3 | ||
| 2" | in. | 6.5 | 1 | 3.31 | 1.44 | 2.46 | 0.31 | 8 | 0.75 | 5/8 | 5 | 9 |
| mm. | 165.1 | 25.4 | 84.1 | 36.6 | 62.5 | 7.9 | 19.1 | 15.9 | 127 | 4 | ||
| 2 1/2" | in. | 7.5 | 1.12 | 3.94 | 1.62 | 2.97 | 0.31 | 8 | 0.88 | 3/4 | 5.88 | 12 |
| mm. | 190.5 | 28.4 | 100.1 | 41.1 | 75.4 | 7.9 | 22.4 | 19.1 | 149.4 | 5 | ||
| 3" | in. | 8.25 | 1.25 | 4.62 | 1.81 | 3.6 | 0.38 | 8 | 0.88 | 3/4 | 6.62 | 15 |
| mm. | 209.6 | 31.8 | 117.3 | 46 | 91.4 | 9.7 | 22.4 | 19.1 | 168.1 | 7 | ||
| 3 1/2" | in. | 9 | 1.38 | 5.25 | 1.94 | 4.1 | 0.38 | 8 | 1 | 7/8 | 7.25 | 20 |
| mm. | 228.6 | 35.1 | 133.4 | 49.3 | 104.1 | 9.7 | 25.4 | 22.2 | 184.2 | 9 | ||
| 4" | in. | 10.75 | 1.5 | 6 | 2.12 | 4.6 | 0.44 | 8 | 1 | 7/8 | 8.5 | 36 |
| mm. | 273.1 | 38.1 | 152.4 | 53.8 | 116.8 | 11.2 | 25.4 | 22.2 | 215.9 | 16 | ||
| 5" | in. | 13 | 1.75 | 7.44 | 2.38 | 5.69 | 0.44 | 8 | 1.12 | 1 | 10.5 | 61 |
| mm. | 330.2 | 44.5 | 189 | 60.5 | 144.5 | 11.2 | 28.4 | 25.4 | 266.7 | 28 | ||
| 6" | in. | 14 | 1.88 | 8.75 | 2.62 | 6.75 | 0.5 | 12 | 1.12 | 1 | 11.5 | 78 |
| mm. | 355.6 | 47.8 | 222.3 | 66.5 | 171.5 | 12.7 | 28.4 | 25.4 | 292.1 | 35 | ||
| 8" | in. | 16.5 | 2.19 | 10.75 | 3 | 8.75 | 0.5 | 12 | 1.25 | 1 1/8 | 13.75 | 110 |
| mm. | 419.1 | 55.6 | 273.1 | 76.2 | 222.3 | 12.7 | 31.8 | 28.6 | 349.3 | 50 | ||
| 10" | in. | 20 | 2.5 | 13.5 | 4.38 | 10.92 | 0.5 | 16 | 1.38 | 1 1/4 | 17 | 170 |
| mm. | 508 | 63.5 | 342.9 | 111.3 | 277.4 | 12.7 | 35.1 | 31.8 | 431.8 | 77 | ||
| 12" | in. | 22 | 2.62 | 15.75 | 4.62 | 12.92 | 0.5 | 20 | 1.38 | 1 1/4 | 19.25 | 200 |
| mm. | 558.8 | 66.5 | 400.1 | 117.3 | 328.2 | 12.7 | 35.1 | 31.8 | 489 | 91 | ||
| 14" | in. | 23.75 | 2.75 | 17 | 5 | 14.18 | 0.5 | 20 | 1.5 | 1 3/8 | 20.75 | 250 |
| mm. | 603.3 | 69.9 | 431.8 | 127 | 360.2 | 12.7 | 38.1 | 34.9 | 527.1 | 113 | ||
| 16" | in. | 27 | 3 | 19.5 | 5.5 | 16.19 | 0.5 | 20 | 1.62 | 1 1/2 | 23.75 | 365 |
| mm. | 685.8 | 76.2 | 495.3 | 139.7 | 411.2 | 12.7 | 41.1 | 38.1 | 603.3 | 166 | ||
| 18" | in. | 29.25 | 3.25 | 21.5 | 6 | 18.2 | 0.5 | 20 | 1.75 | 1 5/8 | 25.75 | 435 |
| mm. | 743 | 82.6 | 546.1 | 152.4 | 462.3 | 12.7 | 44.5 | 41.3 | 654.1 | 197 | ||
| 20" | in. | 32 | 3.5 | 24 | 6.5 | 20.25 | 0.5 | 24 | 1.75 | 1 5/8 | 28.5 | 570 |
| mm. | 812.8 | 88.9 | 609.6 | 165.1 | 514.4 | 12.7 | 44.5 | 41.3 | 723.9 | 259 | ||
| 24" | in. | 37 | 4 | 28.25 | 7.25 | 24.25 | 0.5 | 24 | 2 | 1 7/8 | 33 | 810 |
| mm. | 939.8 | 101.6 | 717.6 | 184.2 | 616 | 12.7 | 50.8 | 47.6 | 838.2 | 367 | ||
NOTE:
1. Class 600 flanges except Lap Joint will be furnished with 0.25 (6.35mm) raised face, which is not included in ‘Thickness’ (C) and ‘Length through Hub’ (Y1), (Y3).
2. For Slip-on, Threaded, Socket Welding and Lap Joint Flanges, the hubs can be shaped either vertical from base to top or tapered within the limits of 7 degrees.
3. Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.
4. The gasket surface and backside (bearing surface for bolting) are made parallel within 1 degree. To accomplish parallelism, spot facing is carried out according to MSS SP-9, without reducing thickness (C).
5. Dimensions of sizes 1/2 through 3 1/2 are the same as for Class 400 Flanges.
6. Depth of Socket (D) is covered by ANSI B 16.5 only in sizes through 3 inch, over 3 inch is at the manufacturer’s option.