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Welcome to the Telephone Section

Type I (or Type B) for concrete encasement - Type II (or Type C) for direct burial. Type D for Underbridge or UV exposed areas.
Conforms to NEMA TC10 as well as telephone company specifications CA08546 and AM8546.
Standard 20 foot lengths plus belled end. Other lengths available upon request. Please contact our customer service department if further information is needed.

Other words associated with Telephone conduit. Type C, C Duct.

Part #	Type	Nom. Size	Outside Diameter Inches	Weight LB. per 100 ft.
PTC74B	B	3 1/2"	3.830	76
PTC74C	C	3 1/2"	3.830	110
PTC75B	B	4"	4.350	104
PTC75C	C	4"	4.350	145
PTC75D	D	4"	4.350	150

	Type B PTC75B	Type C PTC75C	Type D PTC75D
Dimensions Nominal ID	4"	4"	4"
Wall thickness (minimum)	.090	.100	.100
Outside Diameter	4.350+.005	4.350+.005	4.350+.005
Standard Length	20'	20'	20'
Feet per Pallet	1260'	1260'	1260'
Load Deformation F/ Y FOR 5% Deflection	30	120	120
Impact Resistance 20# Tup B
72 deg F	45	100	150
32 deg F	25	50	75
Heat Distortion 48 Hours @ 140 deg F
Load #/Hour	15	60	60
Distortion (inches)	.275 Maximum	.250 Maximum	.250 Maximum

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Phone at 1-800-523-8917
Fax 1-740-385-8016

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Copyright� 1997 Osburn Associates, Inc.
Last modified January 24, 2008