API 5L Gr.B seamless steel pipes
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.
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Steel Standard
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Steel Grade
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chemical composition
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API 5L mechanical property
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C
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Mn
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P
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S
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yield strength/Mpa
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Tensile Strength/Mpa
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Elongation %
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API SPECY5L
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A
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0.21
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0.6
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0.03
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0.03
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207
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331
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0
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B
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0.22
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1.2
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0.025
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0.015
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241
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414
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X42
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0.22
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0.025
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0.015
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1.3
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290
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414
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X46
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0.22
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1.4
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0.025
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0.015
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317
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434
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X52
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0.22
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1.4
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0.025
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0.015
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359
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455
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X56
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0.22
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1.4
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0.025
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0.015
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386
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490
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X60
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0.22
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1.4
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0.025
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0.015
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414
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517
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X65
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0.22
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1.45
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0.025
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0.015
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448
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531
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X70
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0.22
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1.65
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0.025
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0.015
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483
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565
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GB/T9711-1997
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L175
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0.21
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0.6
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0.03
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0.03
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175
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315
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27
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L210
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0.21
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0.9
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0.03
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0.03
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210
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335
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25
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L245
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0.26
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1.15
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0.03
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0.03
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245
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415
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21
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L290
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0.28
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1.25
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0.03
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0.03
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290
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415
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21
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L360
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0.3
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1.25
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0.03
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0.03
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360
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460
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19
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L390
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0.26
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1.35
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0.03
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0.03
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390
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490
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18
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L415
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0.26
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1.35
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0.03
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0.03
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415
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520
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17
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L450
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0.26
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1.4
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0.03
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0.03
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450
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525
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17
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L485
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0.23
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1.6
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0.03
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0.03
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485
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570
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16
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SY/T5037-2000
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Q235B
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0.12-0.20
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0.30-0.70
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0.045
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0.045
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235
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375-460
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26
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The purpose of API 5L Pipe is to provide standards for pipe suitable for use in conveying gas, water, and oil in both the oil and natural gas industries. Haihao Group applies this specification to both seamless and welded steel line pipe. Haihao Group supplies pipes with plain-ends, with ends suitable for threading as well as pipe with ends prepared for use with special couplings.
The API 5l specification establishes requirements for two product specification levels (PSL1 and PSL2). These two PSL designations define different levels of standard technical requirements. PSL 2 has mandatory requirements for carbon equivalent, notch toughness, maximum yield strength and maximum tensile strength. The PSL designation has to be defined by the customer at the time of order placement.
Haihao Group will produce pipes to PSL 1 if no PSL level has been defined at the time of order placement. All EEW Group pipe mills are licensed to apply the API Monogram to products complying with the API 5L Specification.
API 5L Carbon Steel Seamless Pipes & Tubes This specification covers seamless 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-flow line(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.
Sizes (Seamless): 1/2″ NB – 60″ NB Sizes (ERW): 1/2″ NB – 24″ NB Sizes (SAW): 16″ NB – 100″ NB
Wall Thickness: Schedule 10 through 160, STD, XS, XXS.
