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AWWA C207-94 Class D
Pipe Size	Outside Diameter	Inside Diameter	Number of Bolt Holes	Bolt Hole Diameter	Bolt Circle	Thickness
44"	55-1/4	...	40	1-5/8	51-3/4	1-3/4
46"	57-1/4	...	40	1-5/8	53-3/4	1-3/4
48"	59-1/2	...	44	1-5/8	56	1-7/8
50"	61-3/4	...	44	1-7/8	58-1/4	2
52"	64	...	44	1-7/8	60-1/2	2
54"	66-1/4	...	44	1-7/8	62-3/4	2-1/8
60"	73	...	52	1-7/8	69-1/4	2-1/4
66"	80	...	52	1-7/8	76	2-1/2
72"	86-1/2	...	60	1-7/8	82-1/2	2-5/8
78"	93	...	64	2-1/8	89	2-3/4
84"	99-3/4	...	64	2-1/8	95-1/2	2-7/8
90"	106-1/2	...	68	2-3/8	102	3
96"	113-1/4	...	68	2-3/8	108-1/2	3-1/4
102"	120	...	72	2-5/8	114-1/2	3-1/4
108"	126-3/4	...	72	2-5/8	120-3/4	3-3/8
114"	133-1/2	...	76	2-7/8	126-3/4	3-1/2
120"	140-1/4	...	76	2-7/8	132-3/4	3-1/2
126"	147	...	80	3-1/8	139-1/4	3-3/4
132"	153-3/4	...	80	3-1/8	145-3/4	3-7/8
138"	160-1/2	...	84	3-3/8	152	4
144"	167-1/4	...	84	3-3/8	158-1/4	4-1/8
Notes: This table is intended for estimating purposes only. Applications vary, confirm all dimensions with your engineering department prior to ordering. Refer to the AWWA C207-94 standard for complete engineering and applications information. All dimensions are in inches unless otherwise noted. Inside diameter and thickness dimensions are application specific. Recommended bolts are 1/8" smaller than the nominal bolt hole diameters shown.