Page 54 - Estimator's Piping Man-Hour Manual 5E

Section One-SHOP FABRICATION 37

90° COUPLING WELDS AND SOCKET WELDS

Labor For Cutting And Welding
Carbon Steel Material

NET MAN HOURS EACH
Pipe 90 —3000 # 90 — 6000 # SOCKET WELDS
Sizes Coupling Coupling Sch.40&80 Sch. 100 &
Inches Weld Weld Pipe Heavier Pipe
1/2 "or Less 1.4 1.7 0.5 0.5
3/4 1.6 1.9 0.5 0.6
1 1.8 2.2 0.6 0.7
1-1/4 2.1 2.5 0.8 0.9
1-1/2 2.3 2.8 0.8 1.0
2 2.9 3.6 0.9 1.3
2-1/2 3.4 4.2 1.1 1.4
3 4.0 4.9 1.2 1.7
Man hours shown are for welding of coupling to the O.D. of the pipe only.
If couplings are to be welded to the I.D. of the pipe, add 50% to the above man hours for pipe thickness up to 1 inch,
and an additional 12% for each 1/4 inch or fraction thereof of pipe thickness over 1 inch.

Any coupling welded to pipe heavier than schedule 160 should be man houred as a 6,000 pound coupling.
For couplings welded at angles from 45" to less than 90° and couplings attached to fittings increase above man
hours 50%.
For couplings welded at angles less than 45% increase above man hours 759J.
Socket welds do not include cut. See respective man hour table for this charge.