Table 1 below presents the comparison between the Nominal Pipe Size (NPS), the Nominal Bore (NB/ DN) in mm, the Outside Diameter (OD) in both inches and mm, and the appropriate wall thickness schedules.
NPS | DN | OD | Sch. 5S | Sch. 5 | Sch. 10S | Sch. 10 | Sch. 20 | Sch. 30 | STD WT | Sch. 40S | Sch. 40 | Sch. 60 | XS | Sch. 80S | Sch. 80 | Sch. 100 | Sch. 120 | Sch. 140 | Sch. 160 | XXS | NPS | ||||||||||||||||||||
mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | |||
1/2 | 15 | 0,84 | 21,3 | 0,065 | 1,650 | 0,065 | 1,650 | 0,083 | 2,110 | 0,083 | 2,110 | – | – | 0,095 | 2,410 | 1,090 | 2,770 | 1,090 | 2,770 | 1,090 | 2,770 | – | – | 0,147 | 3,730 | 0,147 | 3,73 | 0,147 | 3,73 | – | – | – | – | – | – | 0,188 | 4,78 | 0,294 | 7,47 | 1/2 | |
3/4 | 20 | 1,05 | 26,6 | 0,065 | 1,650 | 0,065 | 1,650 | 0,083 | 2,110 | 0,083 | 2,110 | – | – | 0,095 | 2,410 | 0,113 | 2,870 | 0,113 | 2,870 | 0,113 | 2,870 | – | – | 0,154 | 3,910 | 0,154 | 3,91 | 0,154 | 3,91 | – | – | – | – | – | – | 0,219 | 5,56 | 0,308 | 7,82 | 3/4 | |
1 | 25 | 1,315 | 33,4 | 0,065 | 1,650 | 0,065 | 1,650 | 0,109 | 2,770 | 0,109 | 2,770 | – | – | 0,114 | 2,900 | 0,133 | 3,380 | 0,133 | 3,380 | 0,133 | 3,380 | – | – | 0,179 | 4,550 | 0,179 | 4,55 | 0,179 | 4,55 | – | – | – | – | – | – | 0,25 | 6,35 | 0,358 | 9,09 | 1 | |
1 1/4 | 32 | 1,66 | 42,1 | 0,065 | 1,650 | 0,065 | 1,650 | 0,109 | 2,770 | 0,109 | 2,770 | – | – | 0,117 | 2,970 | 0,140 | 3,560 | 0,140 | 3,560 | 0,140 | 3,560 | – | – | 0,191 | 4,850 | 0,191 | 4,85 | 0,191 | 4,85 | – | – | – | – | – | – | 0,25 | 6,35 | 0,382 | 9,7 | 1 1/4 | |
1 1/2 | 40 | 1,9 | 48,2 | 0,065 | 1,650 | 0,065 | 1,650 | 0,109 | 2,770 | 0,109 | 2,770 | – | – | 0,125 | 3,180 | 0,145 | 3,650 | 0,145 | 3,650 | 0,145 | 3,650 | – | – | 0,200 | 5,080 | 0,2 | 5,08 | 0,2 | 5,08 | – | – | – | – | – | – | 0,281 | 7,14 | 0,4 | 10,15 | 1 1/2 | |
2 | 50 | 2,375 | 60,3 | 0,065 | 1,650 | 0,065 | 1,650 | 0,109 | 2,770 | 0,109 | 2,770 | – | – | 0,125 | 3,180 | 0,154 | 3,910 | 0,154 | 3,910 | 0,154 | 3,910 | – | – | 0,218 | 5,540 | 0,219 | 5,54 | 0,218 | 5,54 | – | – | – | – | – | – | 0,344 | 8,74 | 0,436 | 11,07 | 2 | |
2 1/2 | 65 | 2,875 | 73 | 0,083 | 2,110 | 0,083 | 2,110 | 0,120 | 3,050 | 0,120 | 3,050 | – | – | 0,188 | 4,780 | 0,203 | 5,160 | 0,203 | 5,160 | 0,203 | 5,160 | – | – | 0,276 | 7,010 | 0,276 | 7,01 | 0,276 | 7,01 | – | – | – | – | – | – | 0,375 | 9,53 | 0,552 | 14,02 | 2 1/2 | |
3 | 80 | 3,5 | 88,9 | 0,083 | 2,110 | 0,083 | 2,110 | 0,120 | 3,050 | 0,120 | 3,050 | – | – | 0,188 | 4,780 | 0,216 | 5,490 | 0,216 | 5,490 | 0,216 | 5,490 | – | – | 0,300 | 7,620 | 0,3 | 7,62 | 0,3 | 7,62 | – | – | – | – | – | – | 0,438 | 11,13 | 0,6 | 15,24 | 3 | |
3 1/2 | 90 | 4 | 101,6 | 0,083 | 2,110 | 0,083 | 2,110 | 0,120 | 3,050 | 0,120 | 3,050 | – | – | 0,188 | 4,780 | 0,226 | 5,740 | 0,226 | 5,740 | 0,226 | 5,740 | – | – | 0,318 | 8,080 | 0,318 | 8,08 | 0,318 | 8,08 | – | – | – | – | – | – | – | – | – | – | 3 1/2 | |
4 | 100 | 4,5 | 114,3 | 0,083 | 2,110 | 0,083 | 2,110 | 0,120 | 3,050 | 0,120 | 3,050 | – | – | 0,188 | 4,780 | 0,237 | 6,020 | 0,237 | 6,020 | 0,237 | 6,020 | – | – | 0,337 | 8,560 | 0,337 | 8,56 | 0,337 | 8,56 | – | – | 0,438 | 11,13 | – | – | 0,531 | 13,49 | 0,674 | 17,12 | 4 | |
5 | 125 | 5,563 | 141,3 | 0,109 | 2,770 | 0,109 | 2,770 | 0,134 | 3,400 | 0,134 | 3,400 | – | – | – | – | 0,258 | 6,550 | 0,258 | 6,550 | 0,258 | 6,550 | – | – | 3,750 | 9,530 | 0,375 | 9,53 | 0,375 | 9,53 | – | – | 0,5 | 12,7 | – | – | 0,625 | 15,88 | 0,75 | 19,05 | 5 | |
6 | 150 | 6,625 | 168,2 | 0,109 | 2,770 | 0,109 | 2,770 | 0,134 | 3,400 | 0,134 | 3,400 | – | – | – | – | 0,280 | 7,110 | 0,280 | 7,110 | 0,280 | 7,110 | – | – | 0,432 | 10,970 | 0,432 | 10,97 | 0,432 | 10,97 | – | – | 0,562 | 14,27 | – | – | 0,719 | 18,26 | 0,864 | 21,95 | 6 | |
8 | 200 | 8,625 | 219 | 0,109 | 2,770 | 0,109 | 2,770 | 0,148 | 3,760 | 0,148 | 3,760 | 0,250 | 6,350 | 0,277 | 7,040 | 0,322 | 8,180 | 0,322 | 8,180 | 0,322 | 8,180 | 0,406 | 10,310 | 0,500 | 12,700 | 0,5 | 12,7 | 0,5 | 12,7 | 0,594 | 15,09 | 0,719 | 18,26 | 0,812 | 20,62 | 0,906 | 23,01 | 0,875 | 22,23 | 8 | |
10 | 250 | 10,75 | 273 | 0,134 | 3,400 | 0,134 | 3,400 | 0,165 | 4,190 | 0,165 | 4,190 | 0,250 | 6,350 | 0,307 | 7,800 | 0,365 | 9,270 | 0,365 | 9,270 | 0,365 | 9,270 | 0,500 | 12,700 | 0,500 | 12,700 | 0,5 | 12,7 | 0,594 | 15,09 | 0,719 | 18,26 | 0,844 | 21,44 | 1 | 25,4 | 1,125 | 28,58 | 1 | 25,4 | 10 | |
12 | 300 | 12,75 | 323,8 | 0,156 | 3,960 | 0,156 | 3,960 | 0,180 | 4,570 | 0,180 | 5,570 | 0,250 | 6,350 | 0,330 | 8,380 | 0,375 | 9,530 | 0,375 | 9,530 | 0,406 | 10,310 | 0,562 | 14,270 | 0,500 | 12,700 | 0,5 | 12,7 | 0,688 | 17,48 | 0,844 | 21,44 | 1 | 25,4 | 1,125 | 28,58 | 1,312 | 33,32 | 1 | 25,4 | 12 | |
14 | 350 | 14 | 355,6 | 0,156 | 3,960 | 0,156 | 3,960 | 0,188 | 4,780 | 0,250 | 6,350 | 0,312 | 7,920 | 0,375 | 9,530 | 0,375 | 9,530 | 0,375 | 9,530 | 0,438 | 11,130 | 0,594 | 15,090 | 0,500 | 12,700 | 0,5 | 12,7 | 0,75 | 19,05 | 0,938 | 23,83 | 1,094 | 27,79 | 1,25 | 31,75 | 1,406 | 35,71 | – | – | 14 | |
16 | 400 | 16 | 406,4 | 0,165 | 4,190 | 0,165 | 4,190 | 0,188 | 4,780 | 0,250 | 6,350 | 0,312 | 7,920 | 0,375 | 9,530 | 0,375 | 9,530 | 0,375 | 9,530 | 0,500 | 12,700 | 0,656 | 16,660 | 0,500 | 12,700 | 0,5 | 12,7 | 0,844 | 21,44 | 1,031 | 26,19 | 1,219 | 30,96 | 1,438 | 36,53 | 1,594 | 40,49 | – | – | 16 | |
18 | 450 | 18 | 457,2 | 0,165 | 4,190 | 0,165 | 4,190 | 0,188 | 4,780 | 0,250 | 6,350 | 0,312 | 7,920 | 0,438 | 11,130 | 0,375 | 9,530 | 0,375 | 9,530 | 0,562 | 14,270 | 0,750 | 19,050 | 0,500 | 12,700 | 0,5 | 12,7 | 0,938 | 23,83 | 1,156 | 29,36 | 1,375 | 34,93 | 1,562 | 39,67 | 1,781 | 45,24 | – | – | 18 | |
20 | 500 | 20 | 508 | 0,188 | 4,780 | 0,188 | 4,780 | 0,218 | 5,540 | 0,250 | 6,350 | 0,375 | 9,530 | 0,500 | 12,700 | 0,375 | 9,530 | 0,375 | 9,530 | 0,594 | 15,090 | 0,812 | 20,620 | 0,500 | 12,700 | 0,5 | 12,7 | 1,031 | 26,19 | 1,281 | 32,54 | 1,5 | 38,1 | 1,75 | 44,45 | 1,969 | 50,01 | – | – | 20 | |
22 | 550 | 22 | 558,8 | 0,188 | 4,780 | 0,188 | 4,780 | 0,218 | 5,540 | 0,250 | 6,350 | 0,375 | 9,530 | 0,500 | 12,700 | 0,375 | 9,530 | 0,375 | 9,530 | – | – | 0,875 | 22,230 | 0,500 | 12,700 | 0,5 | 12,7 | 0,125 | 28,58 | 1,375 | 34,93 | 1,625 | 41,28 | 1,875 | 47,63 | 2,125 | 53,98 | – | – | 22 | |
24 | 600 | 24 | 609,6 | 0,218 | 5,540 | 0,218 | 5,540 | 0,250 | 6,350 | 0,250 | 6,350 | 0,375 | 9,530 | 0,562 | 14,270 | 0,375 | 9,530 | 0,375 | 9,530 | 0,688 | 17,480 | 0,969 | 24,610 | 0,500 | 12,700 | 0,5 | 12,7 | 1,219 | 30,96 | 1,531 | 38,89 | 1,812 | 46,02 | 2,062 | 52,37 | 2,344 | 59,54 | – | – | 24 | |
26 | 650 | 26 | 660,4 | – | – | – | – | – | – | 0,312 | 7,920 | 0,500 | 12,700 | – | – | 0,375 | 9,530 | – | – | – | – | – | – | 0,500 | 12,700 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 26 | |
28 | 700 | 28 | 711,2 | – | – | – | – | – | – | 0,312 | 7,920 | 0,500 | 12,700 | 0,625 | 15,880 | 0,375 | 9,530 | – | – | – | – | – | – | 0,500 | 12,700 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 28 | |
30 | 750 | 30 | 762 | 0,25 | 6,350 | 0,250 | 6,350 | 0,312 | 7,920 | 0,312 | 7,920 | 0,500 | 12,700 | 0,625 | 15,880 | 0,375 | 9,530 | 0,375 | 9,530 | – | – | – | – | 0,500 | 12,700 | 0,5 | 12,7 | – | – | – | – | – | – | – | – | – | – | – | – | 30 | |
32 | 800 | 32 | 812,8 | – | – | – | – | – | – | 0,312 | 7,920 | 0,500 | 12,700 | 0,625 | 15,880 | 0,375 | 9,530 | – | – | 0,688 | 17,480 | – | – | 0,500 | 12,700 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 32 | |
34 | 850 | 34 | 863,6 | – | – | – | – | – | – | 0,312 | 7,920 | 0,500 | 12,700 | 0,625 | 15,880 | 0,375 | 9,530 | – | – | 0,688 | 17,480 | – | – | 0,500 | 12,700 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 34 | |
36 | 900 | 36 | 914,4 | – | – | – | – | – | – | 0,312 | 7,920 | 0,500 | 12,700 | 0,625 | 15,880 | 0,375 | 9,530 | – | – | 0,750 | 19,050 | – | – | 0,500 | 12,700 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 36 | |
38 | 950 | 38 | 965,2 | – | – | – | – | – | – | – | – | – | – | – | – | 0,375 | 9,530 | – | – | – | – | – | – | 0,500 | 12,700 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 38 | |
40 | 1000 | 40 | 1016 | – | – | – | – | – | – | – | – | – | – | – | – | 0,375 | 9,530 | – | – | – | – | – | – | 0,500 | 12,700 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 40 | |
42 | 1050 | 42 | 1066,8 | – | – | – | – | – | – | – | – | – | – | – | – | 0,375 | 9,530 | – | – | – | – | – | – | 0,500 | 12,700 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 42 | |
44 | 1100 | 44 | 1117,6 | – | – | – | – | – | – | – | – | – | – | – | – | 0,375 | 9,530 | – | – | – | – | – | – | 0,500 | 12,700 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 44 | |
46 | 1150 | 46 | 1168,4 | – | – | – | – | – | – | – | – | – | – | – | – | 0,375 | 9,530 | – | – | – | – | – | – | 0,500 | 12,700 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 46 | |
48 | 1200 | 48 | 1219,2 | – | – | – | – | – | – | – | – | – | – | – | – | 0,375 | 9,530 | – | – | – | – | – | – | 0,500 | 12,700 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | 48 |