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RIGID STEEL
CONDUIT (GRC)
Quality, Long Lasting
Steel Conduit
Columbia-MBF™ Rigid Steel Conduit
is precision manufactured for
dependable, long-lasting value and
ultimate protection for electrical
conductors. It is highly resistant to
damage from impact, and it can be
installed in all occupancies and
locations, including Class I Zone 1
hazardous locations.
Rigid steel conduit is recognized as
a bonding conductor in section
10-802(C) of the Canadian Electrical
Code and also provides excellent
shielding from electromagnetic fields.
Heavy Duty GRC
galvanized to protect
• Hot-dip
against white rust and increase
corrosion resistance
strength ductile steel for
• High
long life and easy bending
•
Smooth, continuous raceways
for fast wire-pulling
•
Certified to CSA C22.2 No.45,
manufactured in accordance
with ANSI C80.1
•
Available in trade sizes 1/2 – 6
Maintain the integrity of conduit raceway installations with
Columbia-MBF GRC Fittings
Columbia-MBF Elbows and
Nipples, manufactured from our
galvanized rigid conduit, provide
consistent raceway appearance
and quality. GRC Elbows,
Nipples and Couplings trade
sizes 1/2 through 6, CSA
Certified to CSA C22.2 No. 45.
Electrical Infrastructure Solutions™
www.columbiambf.ca
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RIGID STEEL
CONDUIT (GRC)
Specifications
Weights and Dimensions for Galvanized Rigid Steel Conduit
FULL ELECTRICAL SYSTEM PROTECTION
Manufactured from high-strength steel, Columbia-MBF
RIGID combines damage-resistant strength with ductility
to assure easy bending, cutting and joining. It also
provides smooth, continuous raceways for fast wirepulling. No need to worry about damage to the conduit
system even when pulling through multiple 90° bends.
™
Approx. Wt.* Per Nominal Outside
100 Ft. (30.5M)
Diameter1
Designator
in.
mm
in.
mm
ft.
m
16
82
37.2
0.840
21.3
0.104
2.60
1000
305.0
21
109
49.4
1.050
26.7
0.107
2.70
1000
305.0
1
27
161
73.0
1.315
33.4
0.126
3.20
500
152.5
1-1/4
35
218
98.9
1.660
42.2
0.133
3.40
250
76.2
1-1/2
41
263
119.3
1.900
48.3
0.138
3.50
250
76.2
1/2
3/4
EMI SHIELDING
Columbia-MBF RIGID is very effective in reducing electromagnetic field levels for encased power distribution circuits,
shielding computers and other sensitive electronic equipment
from the effects of electro-magnetic interference.
kg
Metric
The 3/4" taper NPT threads (ANSI B1.20.1) are full cut and
hot galvanized after cutting. Color-coded end-cap thread
protectors keep the threads clean, sharp and also provide
instant trade size recognition. Even trade sizes are colorcoded blue, 1/2 trade sizes black, and 1/4 trade sizes red.
1
Quantity In
Master Bundle
lb.
Trade Size
Columbia-MBF RIGID is hot-dipped galvanized inside
and out. It’s top-coated with a compatible organic layer
to protect against white rust and increase corrosion
resistance. It is impact and crush resistant for maximum
conductor protection.
Nominal
Wall
Thickness
2
53
350
158.7
2.375
60.3
0.146
3.70
200
61.0
2-1/2
63
559
253.5
2.875
73.0
0.193
4.90
100
30.5
3
78
727
329.7
3.500
88.9
0.205
5.20
100
30.5
3-1/2
91
880
399.1
4.000
101.6
0.215
5.50
100
30.5
4
103
1030
467.1
4.500
114.3
0.225
5.70
100
30.5
5
129
1400
634.9
5.563
141.3
0.245
6.20
10
3.05
6
155
1840
834.5
6.625
168.3
0.266
6.80
10
3.05
For more information only; not a spec requirement.
NOTE: Length = 10 ft. (3.05m) with a tolerance of +/- .25 in. (6.35mm).
* NEMA RN-3 Standard
Visit www.steelconduit.org/gemi.htm to obtain the GEMI
(Grounding and Electro-magnetic Interference) software
analysis program.
FULL CODES & STANDARDS COMPLIANCE
Columbia-MBF RIGID steel conduit is certified to CSA
C22.2 No. 45.Columbia-MBF RIGID is recognized as
an equipment bonding conductor by the Canadian
Electrical Code.
For more information, contact Columbia-MBF at
(866) 632-0180
or visit our website at www.columbiambf.ca
Installation of Rigid Metal Conduit shall be in
accordance with the Canadian Electrical Code and
certified to CSA C22.2 No. 45.
SPECIFICATION DATA
Rigid Steel Conduit shall be hot-dip galvanized and equal
to that supplied by Columbia-MBF, Inc. Threads shall be
hot galvanized after cutting. RIGID shall be certified by
CSA to C22.2 No. 45.
• Columbia-MBF, Inc.
6560 Northwest Drive, Mississauga, ON L4V 1P2 Canada Tele: 905-362-0180 Toll Free: 1-866-632-0180 Fax: 905-362-0186
Columbia-MBF ™ Electrical & Support Division
™
®
www.columbiambf.ca
• Columbia-MBF • Eastern Wire + Conduit • Power-Strut Metal & Fiberglass Framing • Cope Cable Tray • AFC Cable Systems™
™
™
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