Pigging Charts

The following are the replaceable spares for steel-mandrel pigs. Pigs Unlimited offers spares for both our pigs and other manufacturers' pigs.

Foam Pig Comparison Chart

Model		Equivalents
Number	Description	Girard	Knapp	PPP
LB	- 2-pound density with urethane coating on rear of pig	YBS	5B	G1
LC	- 2-pound density with criss-cross urethane coating over entire pig	YCC	5C	G2
LP	- 2-pound density with criss-cross urethane coating and plastic bristle straps	N/A	N/A	N/A
LS	- 2-pound density with criss-cross urethane coating and silicon-carbide grain grit	YCC-SC	5D	G6
LW	- 2-pound density with criss-cross urethane coating and wirebrush straps	N/A	5E	N/A
MB	- 5-pound density with urethane coating on rear of pig	RBS	5A	RX3
MC	- 5-pound density with criss-cross urethane coating over entire pig	RCC	1C	RX4
MC-SS	- 5-pound density with single-spiral urethane coating over entire pig	RSS	1A	RXSS
MP	- 5-pound density with criss-cross urethane coating and plastic bristle straps	N/A	N/A	N/A
MS	- 5-pound density with criss-cross urethane coating and silicon-carbide grain grit	RCC-SC	1D	RX6
MW	- 5-pound density with criss-cross urethane coating and wirebrush straps	RCC-WB	4A	RX5
HB	- 8-pound density with urethane coating on rear of pig	SBD	2A	C3
HC	- 8-pound density with criss-cross urethane coating over entire pig	SCC	2B	C4
HP	- 8-pound density with criss-cross urethane coating and plastic bristle straps	BCC-PB	N/A	CPB
HS	- 8-pound density with criss-cross urethane coating and silicon-carbide grain grit	SCC-SC	2D	C6
HW	- 8-pound density with criss-cross urethane coating and wirebrush straps	SCC-WB	2C	C5
TW	- 8-pound density totally coated in urethane coating and wirebrush straps	MAXI	4D	PB

Note: Other styles and configurations not listed above are available. Please call for quote.

Steel Pipe Chart

Pipe Schedule		schedule 5	schedule 10	schedule 20	schedule 30	schedule 40	schedule Standard	schedule 60	schedule 80	schedule XS	schedule 100	schedule 120	schedule 140	schedule 160	schedule XXS
Pipe Size	O.D. (inches)	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.
3/8	0.675	0.065 0.545	0.065 0.545			0.091 0.493	0.091 0.493		0.126 0.423	0.126 0.423
1/2	0.840	0.065 0.710	0.083 0.674			0.109 0.622	0.109 0.622		0.147 0.546	0.147 0.546				0.187 0.466	0.294 0.252
3/4	1.050	0.065 0.920	0.083 0.884			0.113 0.824	0.113 0.824		0.154 0.742	0.154 0.742				0.218 0.614	0.208 0.434
1	1.315	0.065 1.185	0.109 1.097			0.133 1.049	0.133 1.049		0.179 0.957	0.191 1.278				0.250 0.815	0.358 0.599
1-1/4	1.660	0.065 1.530	0.109 1.442			0.140 1.380	0.140 1.380		0.191 1.278	0.191 1.278				0.250 1.160	0.382 0.896
1-1/2	1.900	0.065 1.770	0.109 1.682			0.145 1.610	0.145 1.610		0.200 1.500	0.200 1.500				0.281 1.338	0.400 1.100
2	2.375	0.065 2.245	0.109 2.157			0.154 2.067	0.154 2.067		0.218 1.939	0.218 1.939				0.343 1.689	0.436 1.503
2-1/2	2.875	0.083 2.709	0.120 2.635			0.203 2.469	0.203 2.469		0.276 2.323	0.276 2.323				0.375 2.125	0.552 1.771
3	3.500	0.083 2.224	0.120 3.260			0.216 3.068	0.216 3.068		0.300 2.900	0.300 2.900				0.437 2.626	0.600 2.300
3-1/2	4.000	0.083 3.834	0.120 3.760			0.226 3.548	0.226 3.548		0.318 3.364	0.318 3.364					0.636 2.728
4	4.500	0.083 4.334	0.120 4.260			0.237 4.026	0.237 4.026	0.281 3.938	0.337 3.826	0.337 3.826		0.437 3.626		0.531 3.438	0.674 3.152
5	5.563	0.109 5.345	0.134 5.295			0.258 5.047	0.258 5.047		0.375 4.813	0.375 4.813		0.500 4.563		0.625 4.313	0.750 4.063
6	6.625	0.109 6.407	0.134 6.357			0.280 6.065	0.280 6.065		0.432 5.761	0.432 5.761		0.562 5.501		0.718 5.189	0.864 4.897
7	7.625						0.301 7.023			0.500 6.625					0.875 5.875
8	8.625	0.109 8.407	1.480 5.665	0.250 8.125	0.277 8.071	0.322 7.981	0.322 7.981	0.406 7.813	0.500 7.625	0.500 7.625	0.594 7.437	0.719 6.187	0.812 7.001	0.906 6.813	0.875 6.875
9	9.625						0.342 8.941			0.500 8.625
10	10.750	0.134 10.482	0.165 10.420	0.250 10.250	0.307 10.136	0.365 10.020	0.365 10.020	0.500 9.750	0.593 9.564	0.500 9.750	0.718 9.314	0.843 9.064	1.000 8.750	1.125 8.500
11	11.750						0.375 11.000			0.500 10.750
12	12.750	0.156 12.438	0.180 12.390	0.250 12.250	0.330 12.090	0.406 11.938	0.375 12.000	0.562 11.626	0.687 11.376	0.500 11.750	0.843 11.064	1.000 10.750	1.125 10.500	1.312 10.126
14	14.000		0.250 13.500	0.312 13.376	0.375 13.250	0.437 13.126	0.375 13.250	0.593 12.814	0.750 12.500	0.500 13.000	0.937 12.126	1.093 11.814	1.250 11.500	1.406 11.188
16	16.000		0.250 15.500	0.312 15.376	0.375 15.250	0.500 15.000	0.375 15.250	0.656 14.688	0.843 14.314	0.500 15.000	1.031 13.938	1.218 13.564	1.437 13.125	1.593 12.814
18	18.000		0.250 17.500	0.312 17.376	0.437 17.126	0.562 16.876	0.375 17.250	0.750 16.500	0.937 16.126	0.500 17.000	1.156 15.688	1.375 15.250	1.562 14.876	1.781 14.438
20	20.000		0.250 19.500	0.375 19.250	0.500 19.000	0.593 18.814	0.375 19.250	0.812 18.376	1.031 17.938	0.500 19.000	1.280 17.440	1.500 17.000	1.750 16.500	1.968 16.064
22	22.000		0.250 21.500	0.375 21.250	0.500 21.000		0.375 21.250	0.875 20.250	1.125 19.750	0.500 21.000	1.375 19.250	1.625 18.750	1.875 18.250	2.125 17.750
24	24.000		0.250 23.500	0.375 23.250	0.562 22.876	0.687 22.626	0.375 23.250	0.968 22.064	1.218 21.564	0.500 23.000	1.531 20.938	1.812 20.376	2.062 19.876	2.343 19.314
26	26.000		0.312 25.376	0.500 25.000			0.375 25.250			0.500 25.000
28	28.000		0.312 27.376	0.500 27.000	0.625 26.750		0.375 27.250			0.500 27.000
30	30.000		0.312 29.376	0.500 29.000	0.625 28.750		0.375 29.250			0.500 29.000
32	32.000		0.312 31.376	0.500 31.000	0.625 30.750	0.688 30.624	0.375 31.250			0.500 31.000
34	34.000		0.312 33.376	0.500 33.000	0.625 32.750	0.688 32.624	0.375 33.250			0.500 33.000
36	36.000		0.312 35.376	0.500 35.000	0.625 34.750	0.750 34.500	0.375 35.250			0.500 35.000
38	38.000						0.375 37.250			0.500 37.000
40	40.000						0.375 39.250			0.500 39.000
44	44.000						0.375 43.250			0.500 43.000
46	46.000						0.375 45.250			0.500 45.000
48	48.000						0.375 47.250			0.500 47.000

Steel Pipe Chart

Chart not available on mobile device. Tablet or Desktop Computer only.

Polyethylene Pipe Chart

Pressure Rating		265 psi SDR 7	psi SDR 7.3	200 psi SDR 9	psi SDR 9.3	160 psi SDR 11	psi SDR 11.5	130 psi SDR 13.5	110 psi SDR 15.5	100 psi SDR 17	89 psi SDR 19	80 psi SDR 21	65 psi SDR 26	50 psi SDR 32.5
Pipe Size	O.D. (inches)	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.	Wall Tkns I.D.
1/2	0.840	0.120 0.600	0.115 0.610	0.093 0.654	0.090 0.660	0.076 0.688	0.073 0.694
3/4	1.050	0.150 0.750	0.144 0.762	0.117 0.816	0.113 0.824	0.095 0.860	0.091 0.868
1	1.315	0.188 0.939	0.180 0.955	0.146 1.023	0.141 1.033	0.120 1.075	0.144 1.087
1-1/4	1.660	0.237 1.186	0.227 1.206	0.184 1.292	0.178 1.304	0.151 1.358	0.144 1.372	0.123 1.414
1-1/2	1.900	0.271 1.358	0.260 1.380	0.211 1.478	0.204 1.492	0.173 1.554	0.165 1.570	0.141 1.618	0.123 1.654
2	2.375	0.339 1.697	0.325 1.725	0.264 1.847	0.255 1.865	0.216 1.943	0.207 1.961	0.176 2.023	0.153 2.069	0.140 2.095
3	3.500	0.500 2.500	0.479 2.542	0.389 2.722	0.376 2.748	0.318 2.864	0.304 2.892	0.259 2.982	0.226 3.048	0.206 3.088	0.184 3.132	0.167 3.166	0.135 3.230	0.108 3.284
4	4.500	0.643 3.214	0.616 3.268	0.500 3.500	0.484 3.532	0.409 3.682	0.391 3.718	0.333 3.834	0.290 3.920	0.265 3.970	0.237 4.026	0.214 4.072	0.173 4.154	0.138 4.224
5-3/8	5.375									0.316 4.743		0.256 4.863	0.207 4.961	0.165 5.045
5	5.563	0.795 3.973	0.762 4.039	0.618 4.327	0.598 4.367	0.506 4.551	0.484 4.595	0.412 4.739	0.359 4.845	0.327 4.909	0.293 4.977	0.265 5.033	0.214 5.135	0.171 5.221
6	6.625	0.946 4.733	0.908 4.809	0.736 5.153	0.712 5.201	0.602 5.421	0.576 5.473	0.491 5.643	0.427 5.771	0.390 5.845	0.349 5.927	0.315 5.995	0.255 6.115	0.204 6.217
7	7.125	1.018 5.089		0.792 5.541		0.648 5.829		0.528 6.069	0.460 6.205	0.419 6.287	0.375 6.375	0.340 6.445	0.274 6.577	0.220 6.685
8	8.625	1.232 6.161	1.182 6.261	0.958 6.709	0.927 6.771	0.784 7.057	0.750 7.125	0.639 7.347	0.556 7.513	0.507 7.611	0.454 7.717	0.411 7.803	0.332 7.961	0.265 0.095
10	10.750	1.536 7.678	1.473 7.804	1.194 8.362	1.156 8.438	0.977 8.796	0.935 8.880	0.796 9.158	0.694 9.362	0.632 9.486	0.566 9.618	0.512 9.726	0.413 9.924	0.331 10.088
12	12.750	1.821 9.108	1.747 9.256	1.417 9.916	1.371 10.008	1.159 10.432	1.109 10.532	0.944 10.862	0.823 11.104	0.750 11.250	0.671 11.408	0.607 11.536	0.490 11.770	0.392 11.966
13	13.380	1.912 9.556		1.487 10.406		1.217 10.946		0.992 11.396	0.864 11.652	0.787 11.806	0.705 11.970	0.637 12.106	0.515 12.350	0.412 12.556
14	14.000	2.000 10.000	1.918 10.164	1.556 10.888	1.505 10.990	1.273 11.454	1.217 11.566	1.037 11.926	0.903 12.194	0.824 12.352	0.737 12.526	0.667 12.666	0.538 12.924	0.431 13.138
16	16.000	2.286 11.428	2.192 11.616	1.778 12.444	1.720 12.560	1.455 13.090	1.391 13.218	1.185 13.630	1.032 13.936	0.941 14.118	0.842 14.316	0.762 14.476	0.615 14.770	0.492 15.016
18	18.000	2.571 12.858	2.466 13.068	2.000 14.000	1.935 14.130	1.636 14.728	1.565 14.870	1.333 15.334	1.161 15.678	1.059 15.882	0.947 16.106	0.857 16.286	0.692 16.616	0.554 16.892
20	20.000	2.857 14.286	2.740 14.520	2.222 15.556	2.151 15.698	1.818 16.364	1.739 16.522	1.481 17.038	1.290 17.420	1.176 17.648	1.053 17.894	0.952 18.096	0.769 18.462	0.615 18.770
21	21.500			2.389 16.722		1.955 17.590		1.593 18.314	1.387 18.726	1.265 18.970	1.132 19.236	1.024 19.452	0.827 19.846	0.662 20.176
22	22.000			2.444 17.112	2.366 17.268	2.000 18.000	1.913 18.174	1.630 18.740	1.419 19.162	1.294 19.412	1.158 19.684	1.048 19.904	0.846 20.308	0.677 20.646
24	24.000			2.667 18.666	2.581 18.838	2.182 19.636	2.087 19.826	1.778 20.444	1.548 20.904	1.412 21.176	1.263 21.474	1.143 21.714	0.923 22.154	0.738 22.524
26	26.000					2.364 21.272		1.926 22.148	1.677 22.646	1.529 22.942	1.368 23.264	1.238 23.524	1.000 24.000	0.800 24.400
28	28.000					2.545 22.910	2.435 23.130	2.074 23.852	1.806 24.388	1.647 24.706	1.474 25.052	1.333 25.334	1.077 25.846	0.862 26.276
30	30.000					2.727 24.546	2.609 24.782	2.222 25.556	1.935 26.130	1.765 26.470	1.579 26.470	1.429 27.142	1.154 27.692	0.923 28.154
800 mm	31.496							2.333 26.830	2.032 27.432	1.850 27.796	1.658 28.180	1.500 28.496	1.211 29.074	0.969 29.558
32	32.000							2.370 27.260	2.065 27.870	1.882 28.236	1.684 28.632	1.524 28.952	1.231 29.538	0.985 30.030
34	34.000							2.519 28.962	2.194 29.612	2.000 30.000	1.789 30.422	1.619 30.762	1.308 31.384	1.046 31.908
36	36.000							2.667 30.666	2.323 31.354	2.118 31.764	1.895 32.210	1.714 32.572	1.385 33.230	1.108 33.784
1000 mm	39.370									2.316 34.738	2.072 35.226	1.875 35.620	1.514 36.342	1.211 26.948
42	42.000								2.710 36.580	2.471 37.058	2.211 37.578	2.000 38.000	1.615 38.342	1.211 36.948
1200 mm	47.244										2.487 42.270	2.250 42.744	1.817 43.610	1.454 44.336
48	48.000											2.286 43.428	1.846 44.308	1.477 45.046
52	52.000												2.000 48.000	1.600 48.800
54	54.000												2.077 49.846	1.662 50.676

Polyethylene Pipe Chart

Chart not available on mobile device. Tablet or Desktop Computer only.

Approximate Pressures and Flows Suggested For Pigging

Dia.	Gal.	Cubic	PSIG	GPM @ 3	GPM @ 5	3 FPS	5 FPS
2.00	0.163	0.022	100 - 200	29	49	8	20
3.00	0.367	0.049	100 - 150	66	110	18	45
4.00	0.653	0.087	75 - 125	118	196	32	80
6.00	1.469	0.196	50 - 100	264	441	72	180
8.00	2.611	0.349	30.- 80	470	783	128	321
10.00	4.080	0.545	20 - 60	734	1,224	200	501
12.00	5.875	0.785	10 - 50	1,058	1,763	289	722
14.00	7.997	1.069	10 - 40	1,439	2,399	393	982
16.00	10.445	1.396	5 - 35	1,880	3,133	513	1,283
18.00	13.219	1.767	5 - 30	2,379	3,966	650	1,624
20.00	16.320	2.182	5 - 25	2,938	4,896	802	2,005
22.00	19.747	2.640	5 - 25	3,554	5,924	970	2,426
24.00	23.501	3.142	5 - 20	4,230	7.050	1,155	2,887
26.00	27.581	3.687	5 - 20	4,965	8,274	1,355	3,388
28.00	31.987	4.276	5 - 20	5,758	9,596	1,572	3,930
30.00	36.720	4,909	5 - 10	6,610	11,016	1,804	4,511
32.00	41.779	5.585	5 - 10	7,520	12,534	2,053	5,133
34.00	47.165	6.305	5 - 10	8,490	14,149	2,318	5,794
36.00	52.877	7.069	5 - 10	9,518	15,863	2,598	6,496
38.00	58.915	7.876	5 - 10	10,605	17,675	2,895	7,238
40.00	65.280	8.727	5 - 10	11,750	19,584	3,208	8,020
42.00	71.971	9.621	5 - 10	12,955	21,591	3,537	8,842
48.00	94.003	12.566	5 - 10	16,921	28,201	4,619	11,548
54.00	118,972	15.904	5 - 10	21,415	35,692	5,846	14,616
60.00	146.880	19.635	5 - 10	26,438	44,064	7,218	18,044
72.00	211.506	28.274	5 - 10	38,071	63,452	10,394	25,984

Dia = Pipe Diameter (Inches), Gal. = Gallons per Foot, Cubic = Cubic Foot per Foot, PSIG = Pressure (psig), GPM @ 3 = GPM @ 3 FPS, GPM @ 5 = GPM @ 5 FPS, 3 FPS = 3 FPS @ 30 PSI 5 FPS = 5 FPS @ 45 PSI

GPM: Based on 3 and 5 fps (feet per second) velocity.

SCFM: Based on 3 fps @ 30 psi and 5 fps @ 45 psi. Formula: Cubic foot of volume per linear foot of pipe, times psi in atmospheres (14.69), times fpm (feet per minute). (Note: For each 14.69 psi increase (at 60 degree F. constant), volume in increased by 1 scfm per cubic foot.

PSIG: Differential Pressure.

Note: Volumes and pressures are recommendations only. Not to be considered as absolute requirements. Requirements will vary according to type of pipe, fluid, gas, materials in pipe, smoothness of pipe, viscosity, temperature, etc.