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Standard

API SPEC 5L

Application

It is used for conveying gas, water, and petroleum of both the oil and natual gas industries.

Grade

B, X42, X46, X52, X56, X60, X65, X70, X80, etc.

Dimensional Tolerances

Standard	Outside Diameter Tolerance		Wall Thickness Tolerances
API SPEC 5L	D ＜ 60.3mm	(+0.41mm ~ -0.80mm)	+15%S ~ -12.5%S
	D ≥ 60.3mm	(+0.75%D ~ -0.75%D)

Chemical Composition

Standard	Grade	C	Mn	P	S
Standard	Grade	Max	Max	Max	Max
API SPEC 5L	PSL1
	B	0.28	1.2	0.03	0.03
	X42	0.28	1.3	0.03	0.03
	X46, X52, X56	0.28	1.4	0.03	0.03
	X60, X65, X70	0.28	1.4	0.03	0.03
	PSL2
	B	0.24	1.2	0.025	0.015
	X42	0.24	1.3	0.025	0.015
	X46, X52, X56	0.24	1.4	0.025	0.015
	X60, X65, X70	0.24	1.4	0.025	0.015

Mechanical Properties

Standard	Grade	Yield Strength (MPa)		Tension Strength (MPa)		Elongation(%)	Impact Energy
API SPEC 5L	PSL1					Check API SPEC 5L Table3
	B	≥241		≥414
	X42	≥290		≥414
	X46	≥317		≥434
	X52	≥359		≥455
	X56	≥386		≥490
	X60	≥414		≥517
	X65	≥448		≥531
	X70	≥483		≥565
	PSL2
		Min	Max	Min	Max		Min
	B	241	448	441	758		41(27)
	X42	290	496	414	758		41(27)
	X46	317	524	434	758		41(27)
	X52	359	531	455	758		41(27)
	X56	386	544	490	758		41(27)
	X60	414	565	517	758		41(27)
	X65	448	600	531	758		41(27)
	X70	483	621	565	758		41(27)

Size

Nominal Size	Outside Diameter		Wall Thickness		Plain-end Weight
Nominal Size	inch	mm	inch	mm	lb/ft	kg/m
0.675	0.675	17.15	0.091	2.3	0.57	0.84
0.675	0.675	17.15	0.126	3.2	0.74	1.1
0.84	0.84	21.34	0.109	2.8	0.85	1.28
0.84	0.84	21.34	0.147	3.7	1.09	1.61
1.05	1.05	26.67	0.113	2.9	1.13	1.7
1.05	1.05	26.67	0.154	3.9	1.48	2.19
1.315	1.315	33.4	0.133	3.4	1.68	2.52
1.315	1.315	33.4	0.179	4.6	2.17	3.21
1.66	1.66	42.2	0.145	3.7	2.72	3.43
	1.66	42.2	0.191	4.9	3	4.51
	1.66	42.2	0.382	9.7	5.22	7.77
1.9	1.9	48.3	0.145	3.7	2.72	4.07
	1.9	48.3	0.2	5.1	3.63	5.43
	1.9	48.3	0.4	10.2	6.41	9.58
2 3/8	2.375	60.3	0.109	2.8	2.64	3.97
	2.375	60.3	0.125	3.2	3	4.51
	2.375	60.3	0.141	3.6	6.36	5.03
	2.375	60.3	0.154	3.9	3.65	5.42
	2.375	60.3	0.172	4.4	4.05	6.07
	2.375	60.3	0.188	4.8	4.39	6.57
	2.375	60.3	0.218	5.5	5.02	7.43
	2.375	60.3	0.25	6.4	5.67	8.51
	2.375	60.3	0.281	7.1	6.28	9.31
	2.375	60.3	0.436	11	9.03	13.47
2 7/8	2.875	73	0.109	2.8	3.22	4.85
	2.875	73	0.125	3.2	3.67	5.51
	2.875	73	0.141	3.6	4.12	6.16
	2.875	73	0.156	4	4.53	6.81
	2.875	73	0.172	4.4	4.97	7.44
	2.875	73	0.188	4.8	5.4	8.07
	2.875	73	0.203	5.2	5.79	8.69
	2.875	73	0.216	5.5	6.13	9.16
	2.875	73	0.25	6.4	7.01	10.51
	2.875	73	0.276	7	7.66	11.39
	2.875	73	0.552	14	13.69	20.37
3 1/2	3.5	88.9	0.141	3.6	5.06	7.57
	3.5	88.9	0.156	4	5.57	8.37
	3.5	88.9	0.172	4.4	6.11	9.17
	3.5	88.9	0.188	4.8	6.65	9.95
	3.5	88.9	0.216	5.5	7.58	11.31
	3.5	88.9	0.25	6.4	8.68	13.02
	3.5	88.9	0.281	7.1	9.66	14.32
	3.5	88.9	0.3	7.6	10.25	15.24
	3.5	88.9	0.6	15.2	18.58	27.63
4	4	101.6	0.156	4	6.4	9.63
	4	101.6	0.172	4.4	7.03	10.55
	4	101.6	0.188	4.8	7.65	11.46
	4	101.6	0.226	5.7	9.11	13.48
	4	101.6	0.25	6.4	10.01	15.02
	4	101.6	0.281	7.1	11.16	16.55
	4	101.6	0.318	8.1	12.5	18.68
4 1/2	4.5	114.3	0.156	4	7.24	10.88
	4.5	114.3	0.172	4.4	7.96	11.92
	4.5	114.3	0.188	4.8	8.67	12.96
	4.5	114.3	0.203	5.2	9.32	13.99
	4.5	114.3	0.219	5.6	10.02	15.01
	4.5	114.3	0.237	6	10.8	16.02
	4.5	114.3	0.25	6.4	11.36	17.03
	4.5	114.3	0.281	7.1	12.67	18.77
	4.5	114.3	0.312	7.9	12.66	20.73
	4.5	114.3	0.337	8.6	13.96	22.42
	4.5	114.3	0.438	11.1	19	28.25
	4.5	114.3	0.531	13.5	22.51	33.56
	4.5	114.3	0.674	17.1	25.57	40.99
5 9/16	5.563	141.3	0.156	4	9.02	13.54
	5.563	141.3	0.188	4.8	10.8	16.16
	5.563	141.3	0.219	5.6	12.51	18.74
	5.563	141.3	0.258	6.6	14.63	21.92
	5.563	141.3	0.281	7.1	15.87	23.5
	5.563	141.3	0.312	7.9	17.51	25.99
	5.563	141.3	0.344	8.7	19.19	28.45
	5.563	141.3	0.375	9.5	20.8	30.88
	5.563	141.3	0.5	12.7	27.06	40.28
	5.563	141.3	0.625	15.9	32.99	49.17
	5.563	141.3	0.75	19.1	38.59	57.56
6 5/8	6.625	168.3	0.188	4.8	12.94	19.35
	6.625	168.3	0.203	5.2	13.94	20.91
	6.625	168.3	0.219	5.6	15	22.47
	6.625	168.3	0.25	6.4	17.04	25.55
	6.625	168.3	0.28	7.1	18.99	28.22
	6.625	168.3	0.312	7.9	21.06	31.25
	6.625	168.3	0.344	8.7	23.1	34.24
	6.625	168.3	0.375	9.5	25.05	37.2
	6.625	168.3	0.432	11	28.6	42.67
	6.625	168.3	0.5	12.7	32.74	48.73
	6.625	168.3	0.562	14.3	36.43	54.31
	6.625	168.3	0.625	15.9	40.09	59.76
	6.625	168.3	0.719	18.3	45.39	67.69
	6.625	168.3	0.75	19.1	47.1	70.27
	6.625	168.3	0.864	21.9	53.21	79.06
	6.625	168.3	0.875	22.2	53.78	79.98
8 5/8	8.625	219.1	0.25	6.4	22.38	33.57
	8.625	219.1	0.277	7	24.72	36.61
	8.625	219.1	0.312	7.9	27.73	41.14
	8.625	219.1	0.322	8.2	28.58	42.65
	8.625	219.1	0.344	8.7	30.45	45.14
	8.625	219.1	0.375	9.5	33.07	49.1
	8.625	219.1	0.438	11.1	38.33	56.94
	8.625	219.1	0.5	12.7	43.43	64.64
	8.625	219.1	0.562	14.3	48.44	72.22
	8.625	219.1	0.625	15.9	53.45	79.67
	8.625	219.1	0.719	18.3	60.77	90.62
	8.625	219.1	0.75	19.1	63.14	94.2
	8.625	219.1	0.812	20.6	67.82	100.84
	8.625	219.1	0.875	22.2	72.49	107.79
	8.625	219.1	1	25.4	81.51	121.33
10 3/4	10.75	273.1	0.25	6.4	28.06	42.09
	10.75	273.1	0.279	7.1	31.23	46.57
	10.75	273.1	0.307	7.8	34.27	51.03
	10.75	273.1	0.344	8.7	38.27	56.72
	10.75	273.1	0.365	9.3	40.52	60.5
	10.75	273.1	0.483	11.1	48.28	71.72
	10.75	273.1	0.5	12.7	54.79	81.55
	10.75	273.1	0.562	14.3	61.21	91.26
	10.75	273.1	0.625	15.9	67.65	100.85
	10.75	273.1	0.719	18.3	77.1	114.99
	10.75	273.1	0.812	20.6	86.26	128.27
	10.75	273.1	0.875	22.2	92.37	137.36
	10.75	273.1	0.938	23.8	98.39	146.32
	10.75	273.1	1	25.4	104.23	155.15
	10.75	273.1	1.25	31.8	126.94	189.22
12 3/4	12.75	323.9	0.33	8.4	43.81	65.35
	12.75	323.9	0.344	8.7	45.62	67.62
	12.75	323.9	0.375	9.5	49.61	73.65
	12.75	323.9	0.406	10.3	53.57	79.65
	12.75	323.9	0.438	11.1	57.65	85.62
	12.75	323.9	0.5	12.7	65.48	97.46
	12.75	323.9	0.562	14.3	73.22	109.18
	12.75	323.9	0.625	15.9	81.01	120.76
	12.75	323.9	0.688	17.5	88.71	132.23
	12.75	323.9	0.75	19.1	96.21	143.56
	12.75	323.9	0.812	20.6	103.63	154.08
	12.75	323.9	0.875	22.2	111.08	165.17
	12.75	323.9	0.938	23.8	118.44	176.13
	12.75	323.9	1	25.4	125.61	186.97
	12.75	323.9	1.062	27	132.69	197.68
	12.75	323.9	1.125	28.6	139.81	208.27
	12.75	323.9	1.25	31.8	153.67	229.06