API Line Pipe is a petroleum and gas transmission pipeline material complying with the American Petroleum Institute (API) 5L standard, primarily used for long-distance transportation of oil, gas, and water in the petroleum and natural gas industry. It includes seamless pipe and welded steel pipe as two main types.
Key Specifications:
Material Grades: L245, L360, A53, J55, and X42-X70 series
Diameter Range: 21.3–914.4 mm
Wall Thickness: 1.53–40 mm
Connection Methods: End welding, coupling joints, and socket connections
Applicable Standards: GB/T 9711, ISO 3183, and API SPEC 5L
Dimensions And Sizes Of Api Line Pipe
|
NPS |
O. D. |
Nominal Wall Thickness |
|||||||||||||||
|
DN |
Inch |
mm |
SCH 5S |
SCH 10S |
SCH 10 |
SCH 20 |
SCH 30 |
SCH 40 |
SCH 60 |
SCH 80 |
SCH 100 |
SCH 120 |
SCH 140 |
SCH 160 |
STD |
XS |
XXS |
|
50 |
2″ |
60.3 |
1.65 |
2.77 |
– |
– |
– |
3.91 |
– |
5.54 |
– |
– |
– |
8.74 |
3.91 |
5.54 |
11.07 |
|
65 |
2-1/2″ |
73 |
2.11 |
3.05 |
– |
– |
– |
5.16 |
– |
7.01 |
– |
– |
– |
9.53 |
5.16 |
7.01 |
14.02 |
|
80 |
3″ |
88.9 |
2.11 |
3.05 |
– |
– |
– |
5.49 |
– |
7.62 |
– |
– |
– |
11.13 |
5.49 |
7.52 |
15.24 |
|
90 |
3-1/2″ |
101.6 |
2.11 |
3.05 |
– |
– |
– |
5.74 |
– |
8.08 |
– |
– |
– |
– |
5.74 |
8.08 |
– |
|
100 |
4″ |
114.3 |
2.11 |
3.05 |
– |
– |
– |
6.02 |
– |
8.58 |
– |
11.13 |
– |
13.49 |
6.02 |
8.56 |
17.12 |
|
125 |
5″ |
141.3 |
2.77 |
3.4 |
– |
– |
– |
6.55 |
– |
9.53 |
– |
12.7 |
– |
15.88 |
6.55 |
9.53 |
18.05 |
|
150 |
6″ |
168.3 |
2.77 |
3.4 |
– |
– |
– |
7.11 |
– |
10.97 |
– |
14.27 |
– |
18.26 |
7.11 |
10.97 |
21.95 |
|
200 |
8″ |
219.1 |
2.77 |
3.76 |
– |
6.35 |
7.04 |
8.18 |
10.31 |
12.7 |
15.09 |
18.26 |
20.62 |
23.01 |
8.18 |
12.7 |
22.23 |
|
250 |
10″ |
273.1 |
3.4 |
4.19 |
– |
6.35 |
7.8 |
9.27 |
12.7 |
15.09 |
18.26 |
21.44 |
25.4 |
28.58 |
9.27 |
12.7 |
25.4 |
|
300 |
12″ |
323.9 |
3.96 |
4.57 |
– |
6.35 |
8.38 |
10.31 |
14.27 |
17.48 |
21.44 |
25.4 |
28.58 |
33.32 |
9.53 |
12.7 |
25.4 |
|
350 |
14″ |
355.5 |
3.96 |
4.78 |
6.35 |
7.92 |
9.53 |
11.13 |
15.09 |
19.05 |
23.83 |
27.79 |
31.75 |
35.71 |
9.53 |
12.7 |
– |
|
400 |
16″ |
406.4 |
4.19 |
4.78 |
6.35 |
7.92 |
9.53 |
12.7 |
16.66 |
21.44 |
26.19 |
30.96 |
36.53 |
40.49 |
9.53 |
12.7 |
– |
|
450 |
18″ |
457.2 |
4.19 |
4.78 |
6.35 |
7.92 |
11.13 |
14.27 |
19.05 |
23.83 |
39.36 |
34.93 |
39.67 |
45.24 |
– |
– |
– |
|
500 |
20″ |
508 |
4.78 |
5.54 |
6.35 |
9.53 |
12.7 |
15.09 |
20.62 |
26.19 |
32.54 |
38.1 |
44.45 |
50.01 |
– |
– |
– |
|
550 |
22″ |
558.8 |
4.78 |
5.54 |
6.35 |
9.53 |
12.7 |
– |
22.23 |
28.58 |
34.93 |
41.28 |
47.63 |
53.98 |
– |
– |
– |
|
600 |
24″ |
609.6 |
5.54 |
6.35 |
6.35 |
9.53 |
14.27 |
17.48 |
24.61 |
30.96 |
38.89 |
46.02 |
52.37 |
59.54 |
– |
– |
– |
