API 5L is a standard specification for the manufacture requirements of two levels (PSL1 and PSL2) of seamless and welded steel pipe for the use of petroleum industry, especially in crude oil, natural gas, and water transportation.
API 5L ERW Pipe Specification:
1. API 5L Welded Pipe Chemical Composition
|
ERW PSL1
|
ERW PSL2
|
|
Grade
|
C (Max.)
|
Mn (Max.)
|
P (Max.)
|
S (Max.)
|
C (Max.)
|
Mn (Max.)
|
P (Max.)
|
S (Max.)
|
|
A
|
0.22
|
0.90
|
0.03
|
0.03
|
0.22
|
1.20
|
0.025
|
0.015
|
|
B
|
0.26
|
1.20
|
0.03
|
0.03
|
0.22
|
1.30
|
0.025
|
0.015
|
|
X42
|
0.26
|
1.30
|
0.03
|
0.03
|
0.22
|
1.40
|
0.025
|
0.015
|
|
X46
|
0.26
|
1.40
|
0.03
|
0.03
|
0.22
|
1.40
|
0.025
|
0.015
|
|
X52
|
0.26
|
1.40
|
0.03
|
0.03
|
0.22
|
1.40
|
0.025
|
0.015
|
|
X56
|
0.26
|
1.40
|
0.03
|
0.03
|
0.22
|
1.40
|
0.025
|
0.015
|
|
X60
|
0.26
|
1.40
|
0.03
|
0.03
|
0.22
|
1.45
|
0.025
|
0.015
|
|
X65
|
0.26
|
1.45
|
0.03
|
0.03
|
0.22
|
1.65
|
0.025
|
0.015
|
|
X70
|
0.26
|
1.65
|
0.03
|
0.03
|
0.22
|
1.85
|
0.025
|
0.015
|
2. API 5L ERW Pipe Yield Strength & Tensile Strength - PSL1 and PSL2
|
Pipe Grade
|
Tensile Properties - ERW Pipe Body of SMLS and Welded Pipes PSL 1
|
Seam of ERW Welded Pipe
|
|
Yield Strength a
|
Tensile Strength a
|
Elongation
|
Tensile Strength b
|
|
Rt0,5 PSI Min
|
Rm PSI Min
|
(in 2in Af % min)
|
Rm PSI Min
|
|
A
|
30,500
|
48,600
|
c
|
48,600
|
|
B
|
35,500
|
60,200
|
c
|
60,200
|
|
X42
|
42,100
|
60,200
|
c
|
60,200
|
|
X46
|
46,400
|
63,100
|
c
|
63,100
|
|
X52
|
52,200
|
66,700
|
c
|
66,700
|
|
X56
|
56,600
|
71,100
|
c
|
71,100
|
|
X60
|
60,200
|
75,400
|
c
|
75,400
|
|
X65
|
65,300
|
77,500
|
c
|
77,500
|
|
X70
|
70,300
|
82,700
|
c
|
82,700
|
|
Pipe Grade
|
Tensile Properties - ERW Pipe Body of SMLS and Welded Pipes PSL 2
|
Seam of ERW 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
|
|
BR, BN,BQ,BM
|
35,500
|
65,300
|
60,200
|
95,000
|
0.93
|
f
|
60,200
|
|
X42, X42R, X2Q, X42M
|
42,100
|
71,800
|
60,200
|
95,000
|
0.93
|
f
|
60,200
|
|
X46N, X46Q, X46M
|
46,400
|
76,100
|
63,100
|
95,000
|
0.93
|
f
|
63,100
|
|
X52N, X52Q, X52M
|
52,200
|
76,900
|
66,700
|
110,200
|
0.93
|
f
|
66,700
|
|
X56N, X56Q, X56M
|
56,600
|
79,000
|
71,100
|
110,200
|
0.93
|
f
|
71,100
|
|
X60N, X60Q,S60M
|
60,200
|
81,900
|
75,400
|
110,200
|
0.93
|
f
|
75,400
|
|
X65Q, X65M
|
65,300
|
87,000
|
77,600
|
110,200
|
0.93
|
f
|
76,600
|
|
X70Q, X65M
|
70,300
|
92,100
|
82,700
|
110,200
|
0.93
|
f
|
82,700
|
|
X80Q, X80M
|
80,.500
|
102,300
|
90,600
|
119,700
|
0.93
|
f
|
90,600
|
3. Difference Between PSL1 and PSL2
|
|
PSL1
|
PSL2
|
|
CVN impact (Charpy) testing
|
None required
|
Required for all grades
|
|
Certification
|
Certificates when specified per SR15
|
Certificates (SR 15.1) mandatory
|
|
Nondestructive inspection of seamless
|
Only when purchaser specifies SR4
|
SR4 mandatory
|
|
Hydrostatic Test
|
Required
|
Required
|
|
Traceability
|
Traceable only until all tests are passed, unless SR15 is specified
|
Traceable after completion of tests (SR 15.2) mandatory
|
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