Propane Gas Piping - Low Pressure Capacity vs. Size

Sizing of low pressure propane gas pipe lines - Imperial units. Capacity tables for steel pipe Schedule 40 and copper tubing types K and L.

Pipe Size (in)	10 ft	20 ft	40 ft	80 ft	150 ft	300 ft
1/2	235	160	110	75	55	35
3/4	490	340	230	160	115	80
1	925	640	440	300	215	145
1 1/4	1900	1305	900	620	440	300
1 1/2	2850	1960	1345	925	660	450
2	5490	3770	2590	1780	1270	870
2 1/2	8740	6010	4130	2840	2020	1390
3	15455	10620	7300	5020	3570	2450
4	31525	21670	14890	10230	7280	5010
5	57030	39200	26940	18520	13180	9060
6	92350	63470	43620	29980	21340	14665
8	189750	130410	89630	61600	43840	30135

Nominal Pipe Size (O.D) (in)	10 ft	20 ft	40 ft	80 ft
1/4 (3/8)	35	25	17	12
3/8 (1/2)	75	50	35	25
1/2 (5/8)	150	105	70	50
5/8 (3/4)	265	180	125	85
3/4 (7/8)	380	260	180	120
1 (1 1/8)	805	555	380	260
1 1/4 (1 3/8)	1450	995	685	470

Nominal Pipe Size (O.D) (in)	10 ft	20 ft	40 ft	80 ft
1/4 (3/8)	40	25	20	13
3/8 (1/2)	90	60	40	30
1/2 (5/8)	165	115	80	55
5/8 (3/4)	280	190	135	90
3/4 (7/8)	430	295	205	140
1 (1 1/8)	870	600	410	280
1 1/4 (1 3/8)	1510	1040	710	490