API 5L

Pipes for oil and gas fields pipelines arrangement, for equipment of oil and gas refining plants. Pipes be supplied with API monogram according to API 5L (License API 5L-0330.) The chemical composition of the line pipes can be also as per the requirements of NASE MR 01-75. For intra-field ducts, pipes and their joints may be manufactured from high-duty cast iron with threaded connection and sealing unitfrom polimeric material upon special agreement. Group of length from 18 to 40 ft. The range of size is given in Table 14. The requirements to chemical composition are given in Table 15. The mechanical properties are given in Table 16.

Table 14

Size designation	Wall	Weight designation	Outside diameter		Wall thickness		Plain end weight		Inside diameter
			in.	mm	in.	mm	lb./ft	kg/m	in.	mm
1/8	STD	0.24	0.405	10.3	0.068	1.7	0.24	0.36	0.269	6.9
1/8	XS	0.31	0.405	10.3	0.095	2.4	0.31	0.46	0.215	5.5
1/4	STD	0.42	0.540	13.7	0.088	2.2	0.42	0.62	0.364	9.3
1/4	XS	0.54	0.540	13.7	0.119	3.0	0.54	0.80	0.302	7.7
3/8	STD	0.57	0.675	17.1	0.091	2.3	0.57	0.84	0.493	12.5
3/8	XS	0.74	0.675	17.1	0.126	3.2	0.74	1.10	0.423	10.7
1/2	STD	0.85	0.840	21.3	0.109	2.8	0.85	1.27	0.622	15.7
1/2	XS	1.09	0.840	21.3	0.147	3.7	1.09	1.62	0.546	13.9
3/4	STD	1.13	1.050	26.7	1.113	2.9	1.13	1.68	0.824	20.9
3/4	XS	1.47	1.050	26.7	0.154	3.9	1.47	2.19	0.742	18.9
1	STD	1.68	1.315	33.4	0.133	3.4	1.68	2.50	1.049	26.6
1	XS	2.17	1.315	33.4	0.179	4.5	2.17	3.24	0.957	24.4
1 1/4	STD	2.27	1.660	42.2	0.140	3.6	2.27	3.39	1.380	35.0
1 1/4	XS	3.00	1.660	42.2	0.191	4.9	3.00	4.47	1.278	32.4
1 1/2	STD	2.72	1.900	48.3	0.145	3.7	2.72	4.05	1.610	40.9
1 1/2	XS	3.63	1.900	48.3	0.200	5.1	3.63	5.40	1.500	38.1
2 3/8	STD	2.03	2.375	60.3	0.083	2.1	2.03	3.02	2.209	56.1
2 3/8	STD	2.64	2.375	60.3	0.109	2.8	2.64	3.93	2.175	54.6
2 3/8	STD	3.00	2.375	60.3	0.125	3.2	3.00	4.47	2.125	53.9
2 3/8	STD	3.36	2.375	60.3	0.141	3.6	3.36	5.00	2.093	53.1
2 3/8	STD	3.65	2.375	60.3	0.154	3.9	3.65	5.43	2.067	52.5
2 3/8	STD	4.05	2.375	60.3	0.172	4.4	4.05	6.03	2.031	51.5
2 3/8	STD	4.39	2.375	60.3	0.188	4.8	4.39	6.54	1.999	50.7
2 3/8	STD	5.02	2.375	60.3	0.218	5.5	5.02	7.48	1.939	49.3
2 3/8	STD	5.67	2.375	60.3	0.250	6.4	5.76	8.45	1.875	47.5
2 3/8	STD	6.28	2.375	60.3	0.281	7.1	6.28	9.36	1.813	46.1
2 7/8	STD	4.12	2.875	73.0	0.141	3.6	4.12	6.13	2.593	65.8
2 7/8	STD	4.53	2.875	73.0	0.156	4.0	4.53	6.75	2.563	65.0
2 7/8	STD	4.97	2.875	73.0	0.172	4.4	4.97	7.40	2.531	64.2
2 7/8	STD	5.40	2.875	73.0	0.188	4.8	5.4	8.04	2.499	63.4
2 7/8	STD	5.79	2.875	73.0	0.203	5.2	5.79	8.62	2.469	62.6
2 7/8	STD	6.13	2.875	73.0	0.216	5.5	6.13	9.13	4.443	62.0
2 7/8	STD	7.01	2.875	73.0	0.250	6.4	7.01	10.44	2.375	60.2
2 7/8	STD	7.66	2.875	73.0	0.276	7.0	7.66	11.41	2.313	59.0
3 1/2	STD	5.57	3.500	88.9	0.156	4.0	5.57	8.29	3.188	80.9
3 1/2	STD	6.11	3.500	88.9	0.172	4.4	6.11	9.10	3.156	80.1
3 1/2	STD	6.65	3.500	88.9	0.188	4.8	6.65	9.90	3.124	79.3
3 1/2	STD	7.58	3.500	88.9	0.216	5.5	7.58	11.29	3.068	77.9
3 1/2	STD	8.68	3.500	88.9	0.250	6.4	8.68	12.93	3.000	76.1
3 1/2	STD	9.66	3.500	88.9	0.281	7.1	9.66	14.38	2.938	74.7
3 1/2	STD	10.25	3.500	88.9	0.300	7.6	10.25	15.26	2.900	73.7
4	STD	9.11	4.000	101.6	0.226	5.7	9.11	13.57	3.548	90.2
4	STD	10.01	4.000	101.6	0.250	6.4	10.01	14.91	3.500	88.8
4	STD	11.16	4.000	101.6	0.281	7.1	11.16	16.62	3.438	87.4
4	STD	12.50	4.000	101.6	0.318	8.1	12.50	18.61	3.364	85.4
4 1/2	STD	9.32	4.500	114.3	0.203	5.2	9.32	13.88	4.094	103.9
4 1/2	STD	10.01	4.500	114.3	0.219	5.6	10.01	14.91	4.062	103.1
4 1/2	STD	10.79	4.500	114.3	0.237	6.0	10.79	16.07	4.026	102.3
4 1/2	STD	11.35	4.500	114.3	0.250	6.4	11.35	16.90	4.000	101.5
4 1/2	STD	12.66	4.500	114.3	0.281	7.1	12.66	18.85	3.938	100.1
4 1/2	STD	13.96	4.500	114.3	0.312	7.9	13.96	20.79	3.876	98.5
4 1/2	STD	14.98	4.500	114.3	0.337	8.6	14.98	22.31	3.826	97.1
4 1/2	STD	19.00	4.500	114.3	0.438	11,1	19.00	28.30	3.624	92.1
5 9/16	STD	12.50	5.563	141.3	0.219	5.6	12.50	18.61	5.125	130.1
5 9/16	STD	14.62	5.563	141.3	0.258	6.6	14.62	21.77	5.047	128.1
5 9/16	STD	15.85	5.563	141.3	0.281	7.1	15.85	23.61	5.001	127.1
5 9/16	STD	17.50	5.563	141.3	0.312	7.9	17.50	26.06	4.939	125.5
5 9/16	STD	19.17	5.563	141.3	0.344	8.7	19.17	28.55	4.875	123.9
5 9/16	STD	20.78	5.563	141.3	0.375	9.5	20.78	30.95	4.813	122.3
5 9/16	STD	27.04	5.563	141.3	0.500	12.7	27.04	40.28	4.563	115.9
6 5/8	-	17.02	6.625	168.3	0.250	6.4	17.02	25.35	6.125	155.5
6 5/8	-	18.97	6.625	168.3	0.280	7.1	18.97	28.26	6.065	154.1
6 5/8	-	21.04	6.625	168.3	0.312	7.9	21.04	31.33	6.001	152.5
6 5/8	-	23.07	6.625	168.3	0.344	8.7	23.08	34.37	5.937	150.9
6 5/8	-	25.03	6.625	168.3	0.375	9.5	25.03	37.28	5.875	149.3
6 5/8	-	28.57	6.625	168.3	0.432	11.0	28.57	42.55	5.761	146.3
6 5/8	-	32.71	6.625	168.3	0.500	12.7	32.71	48.72	5.625	142.9
6 5/8	-	36.39	6.625	168.3	0.562	14.3	36.39	54.20	5.501	139.7
6 5/8	-	40.05	6.625	168.3	0.625	15.9	40.05	59.65	5.375	136.5

The nominal length ranges from 20 to 40 feet (6 m - 12 m).
The length of pipes conforms to API 5L standard and can be specified in order.

Table 15

Grade	Fraction of total mass of elements, per cent
	C, max.	Mn, max.	P, max.	S, max.
A	0.22	0.90	0.030	0.030
B	0.27	1.15	0.030	0.030
X42	0.29	1.25	0.030	0.030
X46	0.31	1.35	0.030	0.030
X52	0.31	1.35	0.030	0.030
X56	0.26	1.35	0.030	0.030

Table 16

Grade	Ultimate tensile strength, min.		Yield strength, min.		Elongation, max., per cent
	psi	MPa	psi	MPa
A	48000	331	30000	207	As per formula
B	60000	413	35000	241	As per formula
X42	60000	413	42000	289	As per formula
X46	63000	434	46000	317	As per formula
X52	66000	455	52000	358	As per formula
X56	71000	489	56000	386	As per formula

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