Standard Dimensions » Grooved and Shouldered Joints » AMERICAN

Grooved and Shouldered Joints

Grooved Joint Pipe

Standard fittings are available with grooved joints and are normally available only with rigid grooving. Couplings for grooved joints may be furnished by AMERICAN but are not of our design or manufacture. Check AMERICAN for details and recommendations.

Size (in.)	Dimensions in Inches
	OD	T² Nominal Wall Thickness	A		B	C	D Groove Depth		Min. Length Grooved End- Grooved End Pipe (in.)
	OD	T² Nominal Wall Thickness	Flexible Joint	Rigid Joint	B	C	Min.	Max.	Min. Length Grooved End- Grooved End Pipe (in.)
4	4.80	0.32	0.750	0.840	0.375	4.563	0.096	0.151	3 1/2
6	6.90	0.34	0.750	0.840	0.375	6.656	0.100	0.154	3 1/2
8	9.05	0.36	0.875	0.950	0.500	8.781	0.104	0.177	4
10	11.10	0.38	0.938	1.015	0.500	10.813	0.114	0.186	4
12	13.20	0.40	0.938	1.015	0.500	12.906	0.117	0.192	4
14	15.30	0.42	0.938	1.015	0.625	14.969	0.126	0.206	4 1/4
16	17.40	0.43	1.188	1.340	0.625	17.063	0.128	0.208	5
18	19.50	0.47	1.188	1.340	0.625	19.125	0.148	0.228	5
20	21.60	0.51	1.188	1.340	0.625	21.219	0.150	0.230	5
24	25.80	0.56	1.188	1.340	0.625	25.406	0.157	0.237	5
30³	32.00	0.63	1.375	1.625	0.750	31.550	0.195	-	6
36³	38.30	0.73	1.375	1.625	0.750	37.850	0.195	-	6

¹ “R” for sizes 4" and 6" is .120"; for 8"-12" is .145"; for 14" and 16" is .165"; for 18"-24" is .185"; and for 30" and 36" is .215".

² Minimum nominal wall thickness of centrifugally cast ductile iron pipe furnished with grooved joint. Thicknesses above correspond to special thickness class 53 for 4"-16" diameter, and special thickness classes 54 and 55 for diameters 18" and 20", respectively, and special thickness class 56 for diameters 24"-36".

³ 30" and 36" sizes are not included in AWWA C606. For tolerances see AWWA C606.

Shouldered Joint Pipe

AMERICAN shouldered joints are furnished on fittings and on statically cast pipe as shown below. On centrifugally cast pipe the shouldered joint is furnished with a welded steel end ring fabricated as shown below right. Consult AMERICAN regarding specific requirements.

Wall thickness will vary according to service requirements and with method of casting – centrifugal or static. Consult AMERICAN for details.

Shouldered Joints with other dimensions can be furnished under certain circumstances. Consult AMERICAN for details.

Couplings for shouldered joints are not designed or manufactured by AMERICAN, but may be furnished on request. Consult with AMERICAN for recommendations.

Welded rings can be furnished on minimum pressure classes of ductile iron pipe. Maximum laying length is 19’6" and minimum laying length is 1’6" for all sizes. Check with AMERICAN if smaller sizes of shouldered end pipes are desired.

Fittings and Spools

Centrifugally Cast Pipe

Size (in.)	Dimensions in Inches
Size (in.)	O.D.	A	B Min.	C Max.	S
18	19.50	1.188	0.750	20.469	20.937
20	21.60	1.188	0.750	22.344	22.875
24	25.80	1.188	0.750	26.594	27.125
30	32.00	1.750	1.000	33.000	33.750
36	38.30	1.750	1.000	39.438	40.188
42	44.50	1.750	1.250	45.813	46.625
48	50.80	1.750	1.250	52.188	53.125
54	57.56	1.750	1.500	58.625	59.688
60	61.61	1.750	1.500	63.625	64.688
60	61.61	1.750	1.500	65.063	66.188
64¹	65.67	1.750	1.500	69.625	70.750