API 5L X80

API 5L X80

It is known as API 5L X80 Pipe and is used for pipeline transportation systems in the rock oil and natural gas sectors as well as in the water and fossil fuel industries. According to the American Petroleum Institute, the API 5L X80 standard is a steel line pipe specification that includes both seamless and welded steel line pipe. It is intended for use in pipeline transportation systems, and it is designated as API 5L Gr X80 Carbon Steel Pipe. Pipes such as the API 5L X80 PSL1 Seamless Pipe are often utilized in sectors such as petroleum and natural gas. The use of API 5L X80 Seamless Pipe may be seen in the transportation of mediums such as gas, water, and oil, since these pipes are ideally suited for the transportation of these media. The API 5L X80 PSL2 Welded Pipe has a size range that is limited only by the capabilities of the manufacturer throughout the manufacturing process.

PRODUCT FEATURES

Facts about API 5L X80

PI 5L X80 pipe specifications are typically governed by the International Organization for Standardization (ISO 3183), which is an acronym for International Organization for Standardization. When it comes to API 5L Grade X80 Steel Pipe, the ISO is a well-known body for providing standardized criteria for pipeline transportation systems in relation to the materials, equipment, and offshore structures used in the pipeline transportation system. A set of manufacturing rules for API 5L X80 PSL1 Line Pipe has been developed to meet the needs of numerous important sectors, such as the petroleum, petrochemical, and natural gas industries. In the opinion of the technical committee that drafted the aforementioned standards, two fundamental Product Specification Levels, also known as PSL of technical requirements, were required. Because of this, the API 5L X80 PSL2 ERW and PSL 1 were created by this technical committee. While this PSL 1 is a standard grade for line API 5L X80 Pipe, PSL 2 for API 5L X80 ERW Pipe offers extra information, such as chemical and mechanical qualities, as well as testing requirements, that is not included in PSL 1.

API 5L X80 Psl1 Seamless Line Pipe, API 5L X80 PSL 2 Welded Pipe, and API 5L X80 PSL 2 Seamless Pipe are all available at a competitive price from us.

Equivalent Steel Grade of X80 Material

Steel Grade

Equivalent Grade

X80 PSL-1

X80 PSL-2

L555Q or X80Q
L555M or X80M

Chemical Composition of API 5L X80 Pipe with t ≤ 0.984”

Steel Grade

Mass fraction, % based on heat and product analyses

Carbon Equiv a

C

Si

Mn

P

S

V

Nb

Ti

Other

CE IIW

CE Pcm

max b

max

max b

max

max

max

max

max

max

max

Welded Pipe

X80M

0.12f

0.45f

1.85f

0.025

0.015

g

g

g

i,j

0.43

0.25

a. SMLS t>0.787”, CE limits shall be as agreed. The CEIIW limits applied fi C > 0.12% and the CEPcm limits apply if C ≤ 0.12%,
b. For each reduction of 0.01% below the specified maximum for C, an increase of 0.05% above the specified maximum for Mn is permissible, up to a maximum of 1.65% for grades ≥ L245 or B, but ≤ L360 or X52; up to a maximum of 1.75% for grades > L360 or X52, but < L485 or X70; up to a maximum of 2.00% for grades ≥ L485 or X70, but ≤ L555 or X80; and up to a maximum of 2.20% for grades > L555 or X80.,
c. Unless otherwise agreed Nb = V ≤ 0.06%,
d. Nb = V = Ti ≤ 0.15%,
e. Unless otherwise agreed, Cu ≤ 0.50%; Ni ≤ 0.30% Cr ≤ 0.30% and Mo ≤ 0.15%,
f. Unless otherwise agreed,
g. Unless otherwise agreed, Nb + V + Ti ≤ 0.15%,
h. Unless otherwise agreed, Cu ≤ 0.50% Ni ≤ 0.50% Cr ≤ 0.50% and MO ≤ 0.50%,
i. Unless otherwise agreed, Cu ≤ 0.50% Ni ≤ 1.00% Cr ≤ 0.50% and MO ≤ 0.50%,
j. B ≤ 0.004%,
k. Unless otherwise agreed, Cu ≤ 0.50% Ni ≤ 1.00% Cr ≤ 0.55% and MO ≤ 0.80%,
l. For all PSL 2 pipe grades except those grades with footnotes j noted, the following applies. Unless otherwise agreed no intentional addition of B is permitted and residual B ≤ 0.001%.

API 5L X80 Pipe Mechanical Properties

Pipe Grade

Tensile Properties – Pipe Body of SMLS and Welded Pipes PSL 2

Seam of Welded Pipe

Yield Strength a

Tensile Strength a

Ratio a, c

Elongation

Tensile Strength d

Rt0,5  PSI Min

Rm  PSI Min

R10,5IRm

(in 2in)

Rm (psi)

Af %

Minimum

Maximum

Minimum

Maximum

Maximum

Minimum

Minimum

X80Q, X80M

80,500

102,300

90,600

119,700

0.93

f

90,600

a. For intermediate grade, refer to the full API5L specification.
b. for grades > X90 refer to the full API5L specification.
c. This limit applies for pies with D> 12.750 in
d. For intermediate grades, the specified minimum tensile strength for the weld seam shall be the same value as was determined for the pipe body using foot a.
e. for pipe requiring longitudinal testing, the maximum yield strength shall be ≤ 71,800 psi
f. The specified minimum elongation, Af, expressed in percent and rounded to the nearest percent, shall be determined using the following equation:
Where C is 1 940 for calculation using Si units and 625 000 for calculation using USC units
Axc   is the applicable tensile test piece cross-sectional area, expressed in square millimeters (square inches) , as follows
– For circular cross-section test pieces, 130mm2 (0.20 in2) for 12.7 mm (0.500 in) and 8.9 mm (.350 in) diameter test pieces; and 65 mm2 (0.10 in2) for 6.4 mm (0.250in) diameter test pieces.
–  For full-section test pieces, the lesser of a) 485 mm2 (0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified outside diameter and the specified wall thickness of the pipe, rounded to the nearest 10 mm2 (0.10in2)
–  For strip test pieces, the lesser of a) 485 mm2 (0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified width of the test piece and the specified wall thickness of the pipe, rounded to the nearest 10 mm2 (0.10in2)
   U is the specified minimum tensile strength, expressed in megapascals (pounds per square inch
g. Lower values fo R10,5IRm may be specified by agreement
h. for grades > x90 refer to the full API5L specification.

Dimensions and Sizes of API 5L X80 Line Pipe

NPS

O. D.

Nominal Wall Thickness

 

DN

Inch

mm

SCH5S

SCH10S

SCH10

SCH20

SCH30

SCH40

SCH60

SCH80

SCH100

SCH120

SCH140

SCH160

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

 

API 5L X80 Pipe Tolerance

O.D. Tolerance

W.T. Tolerance

X80

D < 60.3mm

+0.41/-0.40mm

D < 73mm

+15%/-12.5%

D ≥ 60.3m

+0.75/-0.40mm

D ≥ 73mm

+15%/-12.5%

Test and inspection of API 5L X80 Line pipes

- Hydrostatic Test

Pipe must be able to survive a hydrostatic test without leaking through the weld seam or the pipe body. Jointers do not need to be hydrostatically tested if the pipe sections utilized have been successfully tested.

- Bend Test

There shall be no cracks in any part of the test piece, nor shall there be any opening of the weld.

- Flattening Test

The flattening test method is used to evaluate and exhibit the deformation performance of line pipe to the prescribed size. The flattening test will reveal the pipe’s resistance to longitudinal and circumferential cracking, as well as its internal and surface faults, based on the stress and deformation characteristics of the specimen during the flattening procedure.

- CVN Impact Test for PSL-2

CVN is required for several PSL2 pipe diameters and grades. The body will be inspected for seamless pipe. Welded pipe must be examined in three areas: the body, the pipe weld, and the heat-affected zone. The chart of sizes and grades, as well as the required absorbed energy values, may be found in the full API 5L specification.

- DWT Test for PSL-2 Welded Pipe

The average shear fracture area for each test (of a set of two test pieces) shall be 85 percent, based on a test temperature of 0°C (32°F) or, if accepted, a lower test temperature. For wall thicknesses greater than 25.4mm (1.000 in. ), DWT test acceptance standards must be agreed upon.

NOTE1: At or above the test temperature, such shear-fracture area assures a suitably ductile fracture.

NOTE2: In gas pipelines, an appropriate combination of shear-fracture area and CVN absorbed energy is an essential pipe-body feature for avoiding brittle fracture propagation and controlling ductile fracture propagation (see Annex G and Table20).

OCTG-supplied-by-Tianjin-United-Steel-Pipe
OCTG
Slotted Liner
Steel Fabrication
pipe-fittings
Pipe Fittings
Scroll to Top

Get A Quote Now

Fill in the form below and our team will be happy to assist you