API 5L Pipe schedule Chart in mm

API 5L seamless steel pipe is a type of seamless line pipe steel that complies with the API 5L standard; it is referred to in Chinese as API 5L line pipe steel. The outer diameter of this steel pipe ranges from 13.7 mm to 1219.8 mm, with a wall thickness ranging from 2.11 mm to 100 mm. Applicable standards include API 5L, ASTM, ASME B36.10, and others. Product specifications include fixed lengths of 5.8 m, 6 m, 11.6 m, 11.8 m, and 12 m. Packaging methods involve surface painting, bundling with galvanized steel strips, and wrapping in woven bags.
 

API 5L Pipe Schedule Chart (NPS 1/2" to NPS 24") — Wall Thickness in mm

NPS (Inches)	DN (mm)	OD (Outside Diameter)	Sch 10	Sch 20	Sch 30	Sch STD	Sch 40	Sch 60	Sch XS	Sch 80	Sch 120	Sch 160	Sch XXS
1/2"	15	21.3	2.11	-	-	2.77	2.77	-	3.73	3.73	-	4.78	7.47
3/4"	20	26.7	2.11	-	-	2.87	2.87	-	3.91	3.91	-	5.56	7.82
1"	25	33.4	2.77	-	-	3.38	3.38	-	4.55	4.55	-	6.35	9.09
1-1/4"	32	42.2	2.77	-	-	3.56	3.56	-	4.85	4.85	-	6.35	9.70
1-1/2"	40	48.3	2.77	-	-	3.68	3.68	-	5.08	5.08	-	7.14	10.15
2"	50	60.3	2.77	-	-	3.91	3.91	-	5.54	5.54	-	8.74	11.07
2-1/2"	65	73.0	3.05	-	-	5.16	5.16	-	7.01	7.01	-	9.53	14.02
3"	80	88.9	3.05	-	-	5.49	5.49	-	7.62	7.62	-	11.13	15.24
4"	100	114.3	3.05	-	-	6.02	6.02	-	8.56	8.56	11.13	13.49	17.12
5"	125	141.3	3.40	-	-	6.55	6.55	-	9.53	9.53	12.70	15.88	19.05
6"	150	168.3	3.40	-	-	7.11	7.11	-	10.97	10.97	14.27	18.26	21.95
8"	200	219.1	3.76	6.35	7.04	8.18	8.18	10.31	12.70	12.70	18.26	23.01	22.23
10"	250	273.1	4.19	6.35	7.80	9.27	9.27	12.70	12.70	15.09	21.44	28.58	25.40
12"	300	323.9	4.57	6.35	8.38	9.53	10.31	14.27	12.70	17.48	25.40	33.32	25.40
14"	350	355.6	6.35	7.92	9.53	9.53	11.13	15.09	12.70	19.05	27.79	35.71	-
16"	400	406.4	6.35	7.92	9.53	9.53	12.70	16.66	12.70	21.44	30.96	40.49	-
18"	450	457.2	6.35	7.92	11.13	9.53	14.27	19.05	12.70	23.83	34.93	45.24	-
20"	500	508.0	6.35	9.53	12.70	9.53	15.09	20.62	12.70	26.19	38.10	50.01	-
24"	600	610.0	6.35	9.53	14.27	9.53	17.48	24.61	12.70	30.96	46.02	59.54	-

 

Large Diameter API 5L Pipe Chart (NPS 26" to NPS 48") — Wall Thickness in mm

NPS (Inches)	DN (mm)	OD (Outside Diameter)	Sch 10	Sch 20	Sch 30	Sch STD	Sch 40	Sch XS	Sch 80
26"	650	660.4	7.92	12.70	15.88	9.53	-	12.70	-
28"	700	711.2	7.92	12.70	15.88	9.53	-	12.70	-
30"	750	762.0	7.92	12.70	15.88	9.53	-	12.70	-
32"	800	812.8	7.92	12.70	15.88	9.53	17.48	12.70	-
36"	900	914.4	7.92	12.70	15.88	9.53	19.05	12.70	-
40"	1000	1016.0	7.92	12.70	15.88	9.53	-	12.70	-
42"	1050	1066.8	7.92	12.70	15.88	9.53	-	12.70	-
48"	1200	1219.2	7.92	12.70	15.88	9.53	-	12.70	-

Weight Calculation Formula:

W(kg/m)=(OD−WT)×WT×0.02466W(kg/m)=(OD−WT)×WT×0.02466

• OD = Outside Diameter (mm)

• WT = Wall Thickness (mm)