Core Drill Bit (Guest)

core drill hole size to pipe size chart

The chart below depicts the typical core drill bit hole size needed the for each specified size of pipe in PVC and Black iron pipes made and used for plumbing, fire sprinkler lines, electrical conduits, HVAC, irrigation pipes and other similar type construction projects when having to core drill through a brick, concrete or cement walls or floors in North Carolina.


Schedule 40 Dimensions

Nom. Pipe Size (in) O.D. Average I.D. Min. Wall Nom. Wt./Ft. Max. W.P. PSI* Core Drill Hole Size
1/8" 0.405 0.249 0.068 0.051 810 1/2"
1/4" 0.540 0.344 0.088 0.086 780 3/4"
3/8" 0.675 0.473 0.091 0.115 620 3/4"
1/2" 0.840 0.602 0.109 0.170 600 1"
3/4" 1.050 0.804 0.113 0.226 480 1 1/4"
1" 1.315 1.029 0.133 0.333 450 1 1/2"
1-1/4" 1.660 1.360 0.140 0.450 370 2"
1-1/2" 1.900 1.590 0.145 0.537 330 2 1/2"
2" 2.375 2.047 0.154 0.720 280 3"
2-1/2" 2.875 2.445 0.203 1.136 300 3 1/2"
3" 3.500 3.042 0.216 1.488 260 4"
3-1/2" 4.000 3.521 0.226 1.789 240 4 1/2"
4" 4.500 3.998 0.237 2.118 220 5"
5" 5.563 5.016 0.258 2.874 190 6"
6" 6.625 6.031 0.280 3.733 180 7"
8" 8.625 7.942 0.322 5.619 160 9"
10" 10.750 9.976 0.365 7.966 140 12"
12" 12.750 11.889 0.406 10.534 130 14"


Schedule 80 Dimensions

Nom. Pipe Size (in) O.D. Average I.D. Min. Wall Nom. Wt./Ft. Max. W.P. PSI* Core Drill Hole Size
1/8" .405 .195 0.095 0.063 1230 1/2"
1/4" .540 .282 0.119 0.105 1130 3/4"
3/8" .675 .403 0.126 0.146 920 3/4"
1/2" .840 .526 0.147 0.213 850 1"
3/4" 1.050 .722 0.154 0.289 690 1 1/4"
1" 1.315 .936 0.179 0.424 630 1 1/2"
1-1/4" 1.660 1.255 0.191 0.586 520 2"
1-1/2" 1.900 1.476 0.200 0.711 470 2 1/2"
2" 2.375 1.913 0.218 0.984 400 3"
2-1/2" 2.875 2.290 0.276 1.500 420 3 1/2"
3" 3.500 2.864 0.300 2.010 370 4"
3-1/2" 4.000 3.326 0.318 2.452 350 4 1/2"
4" 4.500 3.786 0.337 2.938 320 5"
5" 5.563 4.768 0.375 4.078 290 6"
6" 6.625 5.709 0.432 5.610 280 7"
8" 8.625 7.565 0.500 8.522 250 9"
10" 10.750 9.493 0.593 12.635 230 12"
12" 12.750 11.294 0.687 17.384 230 14"

Posted 2020-05-27

 Picture 1

size of core drill hole for pipe


offer Hole chart - $1

Often when we core drill hole in walls or floors in one of the towns in North Carolina, such as Charlotte, NC or Raleigh NC, or Winston Salem NC, or Greensboro ...