API 5L Seamless Line Pipe Standard specification for line pipe The American Petroleum Institute specification API 5L covers seamless and welded steel line pipe. This is steel pipe for pipeline transportation systems in the petroleum and natural gas industries. API 5L is suitable for conveying...
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Standard specification for line pipe
The American Petroleum Institute specification API 5L covers seamless and welded
steel line pipe. This is steel pipe for pipeline transportation systems in the
petroleum and natural gas industries. API 5L is suitable for conveying
gas, water, and oil. Size range is limited only by manufacturer's
capabilities.
Specifications for API 5L adhere to the International Organization for
Standardization ISO 3183, which standardizes pipeline transportation systems
within the materials, equipment and offshore structures for petroleum,
petrochemical, and natural gas industries. The technical committee
authoring the standards recognized that there are two basic Product
Specifications Levels (PSL) of technical requirements and therefore developed
PSL 1 and PSL 2. PSL 1 is a standard quality for line pipe where PSL 2
contains additional chemical, mechanical properties, and testing requirements.
Grades covered by this specification are A25, A, B (and the following
"X" Grades), X42, X46, X52, X56, X60, X65, X70, X80. The
two-digit number following the "X" indicates the Minimum Yield
Strength (in 000's psi) of pipe produced to this grade.
Sizes
Nominal Pipe Size 11/2" to 48" O.D.
Wall Thickness - Schedule 10 through 160, STD, XS, XXS.
Standard
API 5L
Product Specification Level PSL-1 and PSL-2
|
API5L、ISO3138 |
Seamless |
|
|
OD(mm) |
Tolerance |
|
|
D＜60.3 |
-0.8~+0.4mm |
|
|
60.3≤D≤168.3 |
±0.75%D |
|
|
168.3＜D≤610 |
±0.75%D |
|
|
610＜D≤1422 |
±1%D |
|
|
D＞1422 |
Agreement |
|
|
Thickness Tolerance |
||
|
API5L、ISO3138 |
seamless |
|
|
Thickness(mm) |
Tolerance(mm) |
|
|
≤4.0 |
0.1 |
|
|
4.0＞t＞25.0 |
+15％t -12.5％t |
|
|
t≥25.0 |
±10% or +3.7(-3.0), adopt bigger |
|
|
PSL1 Chemical Composition |
||||||||
|
API5L、ISO3138 |
(t≤25.0mm) % |
|||||||
|
Grade |
Cb |
Mnb |
P |
S |
V |
Nb |
Ti |
|
|
(max) |
(max) |
(max) |
(max) |
(max) |
(max) |
(max) |
||
|
L175 or A25 |
0.21 |
0.6 |
0.03 |
0.03 |
-- |
-- |
-- |
|
|
L175 or A25P |
0.21 |
0.6 |
0.045-0.080 |
0.03 |
-- |
-- |
-- |
|
|
L210 or A |
0.22 |
0.9 |
0.03 |
0.03 |
-- |
-- |
-- |
|
|
L245 or B |
0.28 |
1.2 |
0.03 |
0.03 |
c,d |
c,d |
d |
|
|
L290 or X42 |
0.28 |
1.3 |
0.03 |
0.03 |
d |
d |
d |
|
|
L320 or X60,L450 or X65,L485 or X70 |
0.28 |
1.4 |
0.03 |
0.03 |
d |
d |
d |
|
|
L415 or X60，L450 or X65，L485 or X70 |
0.28 |
1.4 |
0.03 |
0.03 |
f |
f |
f |
|
|
Welded pipe |
||||||||
|
API5L、ISO3138 |
L175 or A25 |
0.21 |
0.6 |
0.03 |
0.03 |
-- |
-- |
-- |
|
L175 or A25P |
0.21 |
0.6 |
0.045-0.080 |
0.03 |
-- |
-- |
-- |
|
|
L210 or A |
0.22 |
0.9 |
0.03 |
0.03 |
-- |
-- |
-- |
|
|
L245 or B |
0.26 |
1.2 |
0.03 |
0.03 |
c,d |
c,d |
d |
|
|
L290 or X42 |
0.26 |
1.3 |
0.03 |
0.03 |
d |
d |
d |
|
|
L320 or X60,L450 or X65,L485 or X70 |
0.26 |
1.4 |
0.03 |
0.03 |
d |
d |
d |
|
|
L415 or X60 |
0.26 |
1.4 |
0.03 |
0.03 |
f |
f |
f |
|
|
L450 or X65 |
0.26 |
1.45 |
0.03 |
0.03 |
f |
f |
f |
|
|
L485 or X70 |
0.26 |
1.65 |
0.03 |
0.03 |
f |
f |
f |
|
|
PSL2 Chemical Composition |
||||||||
|
API5L ISO3138 |
(t≤25.0mm) |
|||||||
|
Cb |
Si |
Mnb |
P |
S |
V |
Nb |
Ti |
|
|
(max) |
(max) |
(max) |
(max) |
(max) |
(max) |
(max) |
(max) |
|
|
L245R/BR |
0.24 |
0.4 |
1.2 |
0.025 |
0.015 |
c |
c |
0.04 |
|
L290R/X42R |
0.24 |
0.4 |
1.2 |
0.025 |
0.015 |
0.06 |
0.05 |
0.04 |
|
L245N/BN |
0.24 |
0.4 |
1.2 |
0.025 |
0.015 |
c |
c |
0.04 |
|
L290N/X42N |
0.24 |
0.4 |
1.2 |
0.025 |
0.015 |
0.06 |
0.05 |
0.04 |
|
L320N/X46N |
0.24 |
0.4 |
1.4 |
0.025 |
0.015 |
0.07 |
0.05 |
0.04 |
|
L360/X52N |
0.24 |
0.45 |
1.4 |
0.025 |
0.015 |
0.1 |
0.05 |
0.04 |
|
L390N/X56N |
0.24 |
0.45 |
1.4 |
0.025 |
0.015 |
0.10f |
0.05 |
0.04 |
|
L415N/X60N |
0.24 |
0.45 |
1.40f |
0.025 |
0.015 |
0.10f |
0.05 |
0.04 |
|
L245Q/BQ |
0.18 |
0.45 |
1.4 |
0.025 |
0.015 |
0.05 |
0.05 |
0.04 |
|
L290Q/X42Q |
0.18 |
0.45 |
1.4 |
0.025 |
0.015 |
0.05 |
0.05 |
0.04 |
|
L320Q/X46Q |
0.18 |
0.45 |
1.4 |
0.025 |
0.015 |
0.05 |
0.05 |
0.04 |
|
L360Q/X52Q |
0.18 |
0.45 |
1.5 |
0.025 |
0.015 |
0.05 |
0.05 |
0.04 |
|
L390Q/X56Q |
0.18 |
0.45 |
1.5 |
0.025 |
0.015 |
0.07 |
0.05 |
0.04 |
|
L415Q/X60Q |
0.18 |
0.45 |
1.70f |
0.025 |
0.015 |
g |
g |
g |
|
L450Q/X65Q |
0.18 |
0.45 |
1.70f |
0.025 |
0.015 |
g |
g |
g |
|
L485Q/X70Q |
0.18 |
0.45 |
1.80f |
0.025 |
0.015 |
g |
g |
g |
|
L555Q/X80Q |
0.18 |
0.45 |
1.90f |
0.025 |
0.015 |
g |
g |
g |
|
PSL1 The Tensile Testing requirements of steel pipe |
|||||
|
API5L ISO3138 |
Steel Grade |
Seamless and welded steel pipe |
EW、SAW and COW |
||
|
yield strength |
tensile strength |
Elongtion |
tensile strength |
||
|
Rt0.5MPa(psi) Min |
RmMPa(psi) Min |
Af％Min |
RmMPa(psi) Min |
||
|
L175 Or A25 |
175(25400) |
310(45000) |
c |
310(45000) |
|
|
L175 Or A25P |
175(25400) |
310(45000) |
c |
310(45000) |
|
|
L210 Or A |
210(30500) |
335(48600) |
c |
335(48600) |
|
|
L245R Or BR |
245(35500) |
415(60200) |
c |
415(60200) |
|
|
L245 Or B |
|||||
|
L290R Or X42R |
290(42100) |
415(60200) |
c |
415(60200) |
|
|
L290 Or X42 |
|||||
|
L320 Or X46 |
320(46400) |
435(63100) |
c |
435(63100) |
|
|
L360 Or X52 |
360(52200) |
460(66700) |
c |
460(66700) |
|
|
L390 Or X56 |
390(56600) |
490(71100) |
c |
490(71100) |
|
|
L415 Or X60 |
415(60200) |
520(75400) |
c |
520(75400) |
|
|
L450 Or X65 |
450(65300) |
535(77600) |
c |
535(77600) |
|
|
L485 Or X70 |
485(70300) |
570(82700) |
c |
570(82700) |
|
|
PSL1 Mechanical Properties |
|||||
|
API5L ISO3138 |
Seamless and Welded |
||||
|
Yield Strength |
Tensile strength |
a,b,c |
|||
|
Rt0.5MPa(psi) |
RmMPa(psi) |
Rt0.5/Rm |
|||
|
Min |
Max |
Min |
Max |
Max |
|
|
L245R or BR,L245N or BN, |
245 |
450C |
415 |
760 |
0.93 |
|
L245Q or B,QL245M or BM |
-35500 |
-65300 |
-60200 |
-110200 |
|
|
L290R or X42R，L290N or X42N，L290Q or X42Q，L290M or X42M |
290 |
495 |
415 |
760 |
0.93 |
|
-42100 |
-71800 |
-60200 |
-110200 |
||
|
L320N or X46N，L320Q or X46Q，L320M or X46M |
320 |
525 |
435 |
760 |
0.93 |
|
-46400 |
-76100 |
-63100 |
-110200 |
||
|
L360N or X52N，L360Q or X52Q，L360M or X52M |
360 |
530 |
460 |
760 |
0.93 |
|
-52200 |
-76900 |
-66700 |
-110200 |
||
|
L390N or X56N，L390Q or X56Q，L390M or X56M |
390 |
545 |
490 |
760 |
0.93 |
|
-56600 |
-79000 |
-71100 |
-110200 |
||
|
L415N or X60N，L415Q or X60Q，L415M or X60M |
415 |
565 |
520 |
760 |
0.93 |
|
-60200 |
-81900 |
-75400 |
-110200 |
||
|
L450Q or X65Q，L450M or X65M |
450 |
600 |
535 |
760 |
0.93 |
|
-65300 |
-87000 |
-77600 |
-110200 |
||
|
L485Q or X70Q，L485M or X70M |
485 |
635 |
570 |
760 |
0.93 |
|
-70300 |
-92100 |
-82700 |
-110200 |
||
|
L555Q or X80Q，L555M or X80M |
555 |
705 |
625 |
825 |
0.93 |
|
-80500 |
-102300 |
-90600 |
-119700 |
||
|
L625M or X90M |
625 |
775 |
695 |
915 |
0.95 |
|
-90600 |
-112400 |
-100800 |
-132700 |
||
|
L690M or X100M |
690 |
840 |
760 |
990 |
0.97 |
|
-100100 |
-121800 |
-110200 |
-143600 |
||
|
L830M or X120M |
830 |
1050 |
915 |
1145 |
0.99 |
|
-120400 |
-152300 |
-132700 |
-166100 |
||
|
PSL2 steel pipe CNV absorbing energy |
||||||
|
API5L ISO3138 |
All sizes CVN absorbing energy |
|||||
|
Min Kv J(ft-1bf) |
||||||
|
Grade |
||||||
|
≤L415 or X60 |
＞L415 or X60≤L450 or X65 |
＞L450 or X65＞L485 or X70 |
≤L485 or X70≤L555 or X80 |
＞L555 or X80≤L625 or X90 |
＞L625 or X90≤L690 or X100 |
|
|
≤508（20.0） |
27(20) |
27(20) |
27(20) |
40(30) |
40(30) |
40(30) |
|
＞508(20.0) |
27(20) |
27(20) |
27(20) |
40(30) |
40(30) |
40(30) |
|
≤762(30.0) |
||||||
|
＞762(30.0) |
40(30) |
40(30) |
40(30) |
40(30) |
40(30) |
54(40) |
|
≤914(36.0) |
||||||
|
＞914(36.0) |
40(30) |
40(30) |
40(30) |
40(30) |
40(30) |
54(40) |
|
≤1219(48.0) |
||||||
|
＞1219(48.0) |
40(30) |
54(40) |
54(40) |
54(40) |
54(40) |
68(50) |
|
≤1422(56.0) |
||||||
|
＞1422(56.0) |
40(30) |
54(40) |
68(50) |
68(50) |
81(60) |
95(70) |
|
≤2134(84) |
||||||
|
CEHW CEPCM |
|
||
|
API5L ISO3138 |
CEHW |
C≤12％ CEpcm= Si/30 +Mn/20 +Cu/20 +Ni/60 +Cr/20 +Mo/15 +V/10 +5B |
|
|
＞12％ CEhw=Mn/6 +(Cr+Mo+V)/5 +(Ni+Cu)/15 |
|
||
1.a.For each reduction of 0.01% below the specified maximum concentration for carbon, an increase of 0.05% above the specified maximum concentration for manganese is permissible, up to a maximum of 1.65% for ＞ grades B, but ＜ X52; up to a maximum of 1.75% for grades＞X52, but＜X70; and up to a maximum of 2.00% for grade X70
2.b.The sum of the niobium, vanadium, and titanium concentrations shall be ＜ 0.06%.
3.c.Unless otherwise agreed, 0.50% maximum for copper, 0.30% maximum for nickel, 0.30% maximum for chromium, and 0.12% maximum for molybdenum.
Select differences between PSL 1 and PSL 2:
|
|
|
|
|
|
None required |
Required for all grades |
|
|
Only when purchaser specifies SR4 |
SR4 mandatory |
|
|
Certificates when specified per SR15 |
Certificates (SR 15.1) mandatory |
|
|
Traceable only until all tests are passed, unless SR15 is specified |
Traceable after completion of tests (SR 15.2) mandatory |
|
Hydrostatic Test |
Required |
Required |
Note: This is summarized information from API Specification 5L. Please refer to the specific Standard or Specification or contact us for more details.
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