API 5L Gr.B Size Chart - Knowledge

API 5L Gr.B is available in various sizes, depending on the application and pressure requirements. The size of a pipe is usually determined by its outside diameter (OD) and wall thickness (WT).

API 5L Pipe sizes and tolerances

JSL	MSL	BAO	ISMT	USL	Lontrin	SMTM	TNRS	V&M	Wuzi
API 5L Pipe Sizes in Inch
1/2	1/2	1/2	1/2	-	1/2	1/2	1/2	1/2	1/2
3/4	3/4	3/4	3/4	-	3/4	3/4	3/4	3/4	3/4
1	1	1	1	-	1	1	1	1	1
1.25	1.25	1.25	1.25	-	1.25	1.25	1.25	1.25	1.25
1.5	1.5	1.5	1.5	-	1.5	1.5	1.5	1.5	1.5
2	2	2	2	-	2	2	2	2	2
2.5	2.5	2.5	2.5	-	2.5	2.5	2.5	2.5	2.5
3	3	3	3	-	3	3	3	3	3
3.5	3.5	3.5	3.5	-	3.5	3.5	3.5	3.5	3.5
4	4	4	4	4	4	4	4	4	4
5	5	5	5	5	5	5	5	5	5
6	6	6	6	6	6	6	6	6	6
8	8	8	8	8	8	8	8	8	8
-	10	10	10	10	10	10	10	10	10
-	12	12	-	12	12	12	12	12	12
-	14	14	-	14	14	14	14	14	14
-	16	16	-	-	16	16	16	16	16
-	18	18	-	-	18	18	18	18	18
-	20	20	-	-	20	20	20	20	20
-	-	22	-	-	22	22	22	22	22
-	-	24	-	-	24	24	24	24	24

API 5L Pipe Schedule Chart

NPS (in)	Outside Diameter (in)	API 5l Pipe Schedule
		SCH 10	SCH 20	SCH 30	SCH STD	SCH 40	SCH 60	SCH XS	SCH 80	SCH 100	SCH 120	SCH 140	SCH 160	SCH XXS
		Wall Thickness (in)
1/8	0.405				0.068	0.068		0.095	0.095
1/4	0.540				0.088	0.088		0.119	0.119
3/8	0.675				0.091	0.091		0.126	0.126
1/2	0.840				0.109	0.109		0.147	0.147				0.187	0.294
3/4	1.050				0.113	0.113		0.154	0.154				0.219	0.308
1	1.315				0.133	0.133		0.179	0.179				0.250	0.358
1 1/4	1.660				0.140	0.140		0.191	0.191				0.250	0.382
1 1/2	1.900				0.145	0.145		0.200	0.200				0.281	0.400
2	2.375				0.154	0.154		0.218	0.218				0.344	0.436
2 1/2	2.875				0.203	0.203		0.276	0.276				0.375	0.552
3	3.500				0.216	0.216		0.300	0.300				0.438	0.600
3 1/2	4.000				0.226	0.226		0.318	0.318
4	4.500				0.237	0.237		0.337	0.337		0.438		0.531	0.674
5	5.563				0.258	0.258		0.375	0.375		0.500		0.625	0.750
6	6.625				0.280	0.280		0.432	0.432		0.562		0.719	0.864
8	8.625		0.250	0.277	0.322	0.322	0.406	0.500	0.500	0.594	0.719	0.812	0.906	0.875
10	10.750		0.250	0.307	0.365	0.365	0.500	0.500	0.594	0.719	0.844	1.000	1.125	1.000
12	12.750		0.250	0.330	0.375	0.406	0.562	0.500	0.688	0.844	1.000	1.125	1.312	1.000
14	14.000	0.250	0.312	0.375	0.375	0.438	0.594	0.500	0.750	0.938	1.094	1.250	1.406
16	16.000	0.250	0.312	0.375	0.375	0.500	0.656	0.500	0.844	1.031	1.219	1.438	1.594
18	18.000	0.250	0.312	0.438	0.375	0.562	0.750	0.500	0.938	1.156	1.375	1.562	1.781
20	20.000	0.250	0.375	0.500	0.375	0.594	0.812	0.500	1.031	1.281	1.500	1.750	1.969
22	22.000	0.250	0.375	0.500	0.375		0.875	0.500	1.125	1.375	1.625	1.875	2.125
24	24.000	0.250	0.375	0.562	0.375	0.688	0.969	0.500	1.219	1.531	1.812	2.062	2.344
30	30.000	0.312	0.500	0.625	0.375			0.500
32	32.000	0.312	0.500	0.625	0.375	0.688
34	34.000	0.312	0.500	0.625	0.375	0.688
36	36.000	0.312	0.500	0.625	0.375	0.750
42	42.000		0.500	0.625	0.375	0.750