Zhejiang Matech Industry Company Limited

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Hangzhou Matech Steel Company Limited
Tel: +86-571-28350111
Fax: +86-571-86693517
Email: sales@matech-steel.com
Add: Floor 10, Xixi Vally E-Building, Xihu District, Hangzhou, Zhejiang province, China
API 5L Line Pipe

API 5L Line Pipe

API SPEC 5L Standard Specification for Line Pipe API SPEC 5L is a international standard specifies requirements for the manufacture of two product specification levels (PSL 1 and PSL 2) of welded steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries....

API SPEC 5L Standard Specification for Line Pipe

API SPEC 5L is a international standard specifies requirements for the manufacture of two product specification levels (PSL 1 and PSL 2) of welded steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries.
The 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. 

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Sizes 
Nominal Pipe Size 2" to 24" O.D.
Wall Thickness - Schedule 10 through 160, STD, XS, XXS. 
Standard : API 5L 
Product Specification Level: PSL-2 
Steel grade: X52 

Chemical Properties %

PSL

C, a

   Mna

P

       S

 Si

V

Nb

Ti

Other

CEIIW

CEpcm

1

0.24

1.40

0.025

0.015

0.45

0.10

0.05

0.04

b,c

.043

0.025

2

0.28

1.40

0.03

0.03

-

b

b

b

-

-

-

 Mechanical Properties        

PSL

API 5L PSL-1 X52

API 5L PSL-2 X52

Tensile strength, min /max, psi (MPa)

66,700(460)/ n/a

66,700 / 110,200

Yield strength, min /max, psi (MPa)

52,000 (300)/n/a

52,000 / 76,900

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
b. The sum of the niobium, vanadium, and titanium concentrations shall be < 0.06%.
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.
API 5L X60 PSL 1 grade designations come from API Spec 5L Specification for Line Pipe. Stronger grades have the designation X followed by the specified minimum yield strength of the pipe steel, measured in kilopounds per square inch (abbreviated ksi). Standard Line Pipe has grade designation A and B.

Select differences between PSL 1 and PSL 2:

 Data

PSL1

PSL2

CVN impact (Charpy) testing

None required

Required for all grades

Nondestructive inspection of seamless

Only when purchaser specifies   SR4

SR4 mandatory

Certification

Certificates when specified per SR15

Certificates (SR 15.1) mandatory

Traceability

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.

1. Scope:

1.1 This specification covers sesamless and welded steel line pipe. It includes standard-weight and extra-strong threaded line pipe. It includes standard-weight and extra-strong threaded line pipe; and standard-weight plain-end,regular-weight plain-end, special plain-end, extra-strong plain-end, special plain-end, extra-strong plain-end pipe; as as well as bell and spigot and through-the-flowline(TFL) pipe.

The purpose of this specification is to provide standards for pipe suitable for use in conveying gas, water, and oil in both the oil and natural gas industries.

1.2 Dimensional requirements on threads and thread gauges, stipulations on gauging practice, gauge specifications and certification, as well as instruments and methods for inspecition of threads are given in API Standard 5B and are applicable to products covered by this specification.

Grades covered by this specification are A25, A, B, X42, X46, X52, X56, X60, X65, X70, and X80 and grades intermediate to the Grades X42 and higher listed (see note). The chemical composition and mechanical properties of intermediate grades that are subject to agreement between the purchaser and the menufacturer must be consistent with the corresponding requirements for the grades to which the material is intermediate.

Note :

The grade disignations used herein for Grades A and B do not include reference to the specified minimum yield strength. Other grade designations used herein comprise the letter A or X followed by the first two digits of the specified minimum yield strength.

1.3 Pipe manufactured as Grade X60 or higher shall not be substituted for pipe ordered for Grade X52 or lower with-out purchaser approval.

1.4 Although plain-end line pipe meeting this specifiecation is primarily intended for field makeup by circumferential welding, the manufacturer will not assume responsibility for field welding.

1.5 For regular-weight and special plain-end pipe(special weight) whown in Tables 6A, 6B, and 6C and for standard weight threaded pipe larger than nominal size 12, the size designations used herein are outside diameter sizes. For all other pipe, the size designations are nominal pipe sizes. In the text of this specification, pipe size limits(or size ranges)are outside diameter sizes except where stated to be nominal. These outside diameter size limits and ranges also apply to the corresponding nominal sizes.

1.6 Class Ⅱ steel is rephosphorized and problbly has better threading properties than Class I. Because Class Ⅱ has higher chemical properties than Class I, it may be somewhat more difficult to bend.

1.7 U.S. customary units are used in this specification; metric(SI) units are shown in parenthese in the text and in many tables. See Appendix J for specific information about rounding procedures and conversion factors.

API 5L

B X42. X46. X52. X60 .X65. X70. X80. X100

Line Pipe (PSL1. PSL2)

API 2B

Fabrication of Structure Steel Pipe

ASTM A134

Pipe, Steel, Electric-Fusion(Arc)-Welded (Size NPS 16 and over)

ASTM A139

A, B

Electric-Fusion(Arc)-Welded Steel Pipe (Size NPS 4 and over)

ASTM A252

1, 2, 3

Welded and Seamless Steel Pipe Piles

ASTM A671

All

Electric-Fusion-Welded Steel Pipe for Atmospheric & Low Temperature

ASTM A672

All

Electric-Fusion-Welded Steel Pipe for High-Pressure Service 
at Moderate Temperature

ASTM A691

Carbon and Alloy Steel Pipe, Electric-Fusion Welded 
for High Pressure Service at High Temperatures

JIS G 3444

STK 
290,400,490,500,540

Carbon Steel Tubes for General Structural Purpose

JIS G 3457

STPY 400

Arc Welded Carbon Steel Pipe

KS D 3583

SPW 400

Arc Welded Carbon Steel Pipe

KS D 3566

STK 
290,400,490,500,540

Carbon Steel Tubes for General Structural Purpose

2. Chemical Composition

Grade

Mfg. Process

Chemical composition (%)

C

Si

Mn

P

S

Ni

Cr

Mo

Others

A25C1 Ⅰ

S

0.21Max

-

0.30~0.60

0.045Max

0.06Max

-

-

-

-

A25C1 Ⅱ

0.21Max

-

0.30~0.60

0.045~0.80

0.06Max

-

-

-

-

A

0.21Ma2

-

0.90Max

0.04Max

0.05Max

-

-

-

-

B

0.27Max

-

1.15Max

0.04Max

0.05Max

-

-

-

-

X42(Non-expanded)

0.29Max

-

1.25Max

0.04Max

0.05Max

-

-

-

-

X42(Cold expanded)

0.29Max

-

1.25Max

0.04Max

0.05Max

-

-

-

-

X46(Non expanded)

0.31Max

-

1.35Max

0.04Max

0.05Max

-

-

-

-

X46(Cold expanded)

0.29Max

-

1.25Max

0.04Max

0.05Max

-

-

-

-

X52(Non expanded)

0.31Max

-

1.35Max

0.04Max

0.05Max

-

-

-

-

X52(Cold expanded)

0.29Max

-

1.25Max

0.04Max

0.05Max

-

-

-

-

X56

0.26Max

-

1.35Max

-

0.05Max

-

-

Cb 0.005Max

V 0.005Max

Ti 0.005Max

X60

0.26Max

-

1.35Max

-

0.05Max

-

-

Cb 0.005Max

V 0.005Max

Ti 0.005Max

X65

-

-

-

-

-

-

-

-

-

X70

-

-

-

0.045Max

-

-

-

-

-

X80

-

-

-

0.045~0.080

-

-

-

-

-

A25C1 Ⅰ

W

0.21Max

-

0.04Max

0.06Max

-

-

-

-

A25C1 Ⅱ

0.21Max

-

0.04Max

0.06Max

-

-

-

-

A

0.21Max

-

0.04Max

0.05Max

-

-

-

-

B

0.26Max

-

0.04Max

0.05Max

-

-

-

-

X42

0.28Max

-

0.04Max

0.05Max

-

-

-

-

X46(Non expanded)

0.30Max

-

0.04Max

0.05Max

-

-

-

-

X46(Cold expanded)

0.28Max

-

0.04Max

0.05Max

-

-

-

-

X52(Non expanded)

0.30Max

-

0.04Max

0.05Max

-

-

-

-

X52(Cold expanded)

0.28Max

-

0.04Max

0.05Max

-

-

-

-

X56

0.26Max

-

0.04Max

0.05Max

-

-

-

-

X60

0.26Max

-

0.04Max

0.05Max

-

-

-

-

X65

0.26Max

-

0.04Max

0.05Max

-

-

-

-

X70

0.23Max

-

0.04Max

0.05Max

-

-

-

-

X80

0.18Max

-

0.030Max

0.018Max

-

-

-

-

3. Mechanical Properties

Grade

Tensile Test MPa or N/mm2

Remaks (Similar to JIS)

Possibility Temperature

Min Yield point

Tensile Strength

A25C1 Ⅰ

172

310Min

-

A25C1 Ⅱ

1772

310Min

-

A

207

331Min

(STPG370)

B

241

413Min

(STPG410)

X42(Non-expanded)

289

413Min

-

X42(Cold expanded)

289

413Min

-

X46(Non expanded)

317

434Min

-

X46(Cold expanded)

317

413Min

-

X52(Non expanded)

358

455Min

-

X52(Cold expanded)

358

455Min

-

X56

386

489Min

-

X60

413

517Min

-

X65

448

530Min

-

X70

482

565Min

-

X80

551

620~827

-

A25C1 Ⅰ

172

310Min

-

A25C1 Ⅱ

172

310Min

-

A

207

331Min

-

B

241

413Min

-

X42

289

413Min

-

X46(Non expanded)

289

413Min

-

X46(Cold expanded)

317

434Min

-

X52(Non expanded)

358

455Min

-

X52(Cold expanded)

358

455Min

-

X56

386

489Min

-

X60

413

517Min

-

X65

448

530Min

-

X70

482

565Min

-

X80

551

620Min

-

ANSI / ASME B36.10M-1985

TABLE 1 :APPLICABLE PIPE SPECIFICATIONS

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 1 (1/8"~2")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 2 (21/2"~4")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 3 (4"~6")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 4 (8"10")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 5 (12"~14")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 6 (14":~18")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 7 (18"~20")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 8 (20"~24")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 9 (24"~28")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 10 (28"~32")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 11 (32"~36")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 12 (36"~40")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 13 (42"~46")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 14 (46"~52")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 15 (56"~64")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 16 (64"~76")

TABLE 2 :DIMENSIONS AND WEIGHTS OF WELDED AND SEAMLESS WROUGHT STEEL PIPE 17 (80")

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