Page 60 - Estimators Piping Man Hour Manual

Section One-SHOP FABRICATION 43

MACHINE CUTTING HEAVY WALL PIPE—PLAIN ENDS

Labor For Straight Pipe Only
Carbon Steel Material

NET MAN HOURS EACH

Nominal WALL THICKNESS IN INCHES
Pipe
Size .750 1.00 1.25 1.50 1.75 2.00 2.25 2.50
3 1.00 1.78 „ .- .. „ ..
4 1.78 2.11 3.00 3.33 .. .. -
5 - 2.44 3.11 3.77 4.22 4.77 ..
6 .. 3.00 3.55 4.22 4.77 5.22 5.99 ..
8 .. 3.55 4.22 4.66 5.44 5.88 6.55 7.66
10 - - 4.66 5.22 5.88 6.44 7.22 8.21
12 -- -- „ 5.88 6.33 7.22 7.99 8.99
14 - - - 6.77 6.99 7.77 8.66 9.88
16 -- -- -- -- 8.10 9.32 10.55 11.54
18 - .. - „ .. 8.66 11.54 12.88
20 -- - .. -- -- 11.54 12.88 14.54
22 - .. - - - - 15.76
24 -- - -- -- -- -- -- 17.87
2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50
10 8.88 9.44 - - - .. .„ „
12 9.99 10.77 11.54 12.43 .. .. ..
14 10.99 11.88 12.43 14.10 15.10 16.54 ..
16 12.54 13.54 14.54 15.76 17.09 18.76 -.
18 14.10 15.10 16.54 17.87 19.31 21.42 .. „
20 15.54 16.76 18.43 20.09 21.76 23.64 25.64 27.53
22 17.43 18.87 20.09 22.31 24.31 26.20 28.19 30.30
24 19.31 20.98 22.76 24.86 26.20 29.08 31.75 34.74
4.75 5.00 5.25 5.50 5,75 6.00
20 49.42 31.19 33.30 35.08 37.19 39.07
22 32.41 34.52 36.41 38.41 40.52 42.74
24 37.52 39.52 41.96 44.40 46.62 49.17

For mitre cuts less than 30°, add 50% to the above man hours.
For mitre cuts 30° or greater, add 100% to the above man hours.
Man hours are for cutting pipe with plain ends only and do not include beveling, threading, etc. see appropriate
man hour tables for these operations and time requirements.
For cutting the ends of bends or trimming fittings, add 50% to the above man hours.