Page 180 - Estimators Piping Man Hour Manual

Section Three-ALLOY AND NON-FERROUS FABRICATION 163

Fabrication of alloy and non-ferrous piping is to be figured on the same basis as for corresponding operation on
carbon steel materials, plus the percentage given below applicable to the carbon steel man hour schedules,

ACCESS HOLES

Percent Additive
MATERIAL CLASSIFICATION— GROUP NUMBERS AND PERCENTAGES
Nominal
Pipe Group Group Group Group Group Group Group Group Group
Size 1 2 3 4 5 6 7 8 9
2-1/2,3,4 6.0 8.0 11.0 11.5 5.0 13.5 27.0 12.0 16.5
5, 6, 8 8.0 10.0 14.0 14.0 10.0 17.5 30.0 15.0 21,0
10,12 9.5 12.0 16.0 17.0 16.0 21.0 40.0 19.0 25.0
14,16,18 12.0 16.0 21.0 22.0 23.0 27.5 -- 24.5 32.0
20, 22, 24 15.0 20.0 26.0 28.0 28.0 32.0 .. 29.0 40.0

ASTM A335-P1 .50% Moly
Stainless Steels
GROUP
ASTM A335-P2 .50-.70% Chr.
4 Types 304, 309, 310, 316
(including "L" & "H" Grades)
GROUP ASTM A335-P12 .85- 1.10% Chr.
1
ASTMA335-P11 1.05- 1.45% Chr.
GROUP Copper, Brass, Everdur
ASTM A335-P3 1.50-2.00% Chr. 5
ASTM A335-P3b 1.75-2.25% Chr.
ASTMA-333-GR-1
ASTM A335-P22 2.00-2.50% Chr.
GROUP GROUP ASTM A-333-GR4
2 ASTM A335-P21 2.75-3.25% Chr. 6
ASTM A-333-GR9
ASTM A335-P5,b,c 4.00-6.00% Chr.

ASTM A335-P7 6.00-8.00% Chr. GROUP Hastelloy, Titanium, 99% Ni.
7
ASTM A335-P9 8.00-10.00% Chr. GROUP Stainless Steels Types 321 & 347, Cu-Ni,
GROUP 8 Monel, Inconel, Incoloy, Alloy 20
3 Ferritic Chromes 10.00-15.00% Chr.
GROUP
ASTM A333 Gr. 3 3.50% Nickel 9 Aluminum