Page 108 - Estimators Piping Man Hour Manual

Section Two-FIELD FABRICATION 91

ATTACHING ORIFICE FLANGES—WELD NECK TYPE

Carbon Steel Material
MAN HOURS PER PAIR
Size SERVICE PRESSURE RATING
Ins. 300 Lb. 400 Lb. 600 Lb. 900 Lb. L500 Lb.
I 5.2 5.4 7.1 7.2 7.8

liM 5.2 5.4 7.1 7.2 7.8
lie 5.2 5.4 7.1 7.2 7.8
2 5.2 5.4 7.1 7.2 7.8
3 7.5 8.0 10.2 10.4 11.1
4 10.4 10.9 12.5 12.7 14.3
6 13,1 13.8 16.2 16.5 18.4
,H 17.4 17.9 20.8 21.2 24.3
10 19.6 20.0 25.9 26.9 28.8
12 22.4 25.0 27.1 28.7 32.4:
14 25.6 27.3 30.4 32.1 37.1
16 28.3 29.3 36.8 37.6 41.6
18 34.8 35.8 39.6 41.5 47.8
20 38.2 39.2 44.4 45.4 55.5
_
24 49.4 50.4 57.7 58.9
26 — 54.8 59.8 60.8 _
_
30 63.3 67.8 70.1
34 _ 76.2 80.9 83.4 ._
36 _ 80.0 89.8 91.6 _
_
42 — 116.8 122.3
I i ...-,- »„,„„-..-,-„„ — „
Man hours include setting, aligning, welding, placement of paddle-type plates, and bolting up of pair of orifice
flanges.
Man hours exclude cutting and beveling of pipe. See respective tables for these man hours.