API 5L Gr. B Standard specification

API 5L Gr.B grade designations come from API Spec 5L Specification for Line Pipe.

Standard Line Pipe has grade designation A and B. 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), e.g. X60 for pipe having a minimum yield strength of 60 ksi. See the table below for the standard available grades.

API 5L Gr.B covers WELDED and SEAMLESS PIPE suitable for use in conveying gas, water, and oil in both the oil 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.

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

Line Pipe Physical Properties
 API 5L Grade  Yield Strength
min.(ksi)
 Tensile Strength
min.(ksi)
 Yield to Tensile Ratio
(max.)
 Elongation
min.(%)
 B  35  60  0.93  23
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.


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