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API 5LGR. B Carbon Steel Seamless Pipes

 

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 available:
Schedule 20 - Schedule XXS (heavier on request) up to 250 mm thk.


  Material Grades:

 High Temperature Seamless Pipe  ASTM A106 Gr. B/C, API 5L Gr. B, ASTM A53 Gr. B
 Heat Exchanger Seamless Tube  ASTM A179
 Low Temperature Seamless Pipe  ASTM A333 Gr. 3/6
 Low Temperature Seamless Tube  ASTM A334 Gr. 6
 High Yield Seamless Pipe  API 5L Gr. X42/X46/X52/X56/X60/X65/X70/X80 
  PSL-1/PSL-2
 High Yield Seamless Pipe  ISO 3183 Gr.L245, L290, L320, L360, L390, L415,  L450, L485
 Atmospheric & Low Temp EFW Pipes  ASTM A671 Gr. CC60/CC65/CC70
 High Pressure & Moderate Temp EFW Pipes  ASTM A672 Gr. B60/B65/B70/C55/C60/C65/C70
 High Yield ERW/SAW Pipe  API 5L Gr. X42/X46/X52/X56/X60/X65/X70/X80 
  PSL-1/PSL-2
 High Yield ERW/SAW Pipe  ISO 3183 Gr.L245, L290, L320, L360, L390, L415,  L450, L485


 Additional Testing :

   NACE MR0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc.

 Dimensions :

    All Pipe is manufactured and inspected/tested to the relevant standards including ASTM, ASME, API.

 Chemical Composition

The composition of pipe furnished to this specification, as determined by heat analysis for pipe other than Grade X 80, shall conform to the chemical requirements specified in Table 2, except that by agreement between the purchaser and the manufacturer carbon contents higher than those specified may be used. the composition of intermediate grades(higher than X42)shall conform to chenical requirements agreed upon between the manufacturer and the purchaser, and such requirements shall be consistent with the requirements specified in Table 2 for the applicable type of pipe For Grades X42 and higher, by agreement between the purchaser and the manufacturer, element other than columbium, vanadium, and titanium may be used; however, caution should be exercised in determining the quantity that may be present for any particular size and thickness of pipe because the addition of such otherwise desirable elements may alter the weldability of the pipe.


 API 5L Line Pipe Physical Properties .

Line pipe 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.


 Line Pipe Physical Properties

API 5L Grade Yield Strength
min.
(ksi)		 Tensile Strength
min.
(ksi)		 Yield to Tensile Ratio
(max.)		 Elongation
min.
%1
A 30 48 0.93 28
B 35 60 0.93 23
X42 42 60 0.93 23
X46 46 63 0.93 22
X52 52 66 0.93 21
X56 56 71 0.93 19
X60 60 75 0.93 19
X65 65 77 0.93 18
X70 70 82 0.93 17
X80 80 90 0.93 16

1 -API 5L elongation figures vary with specimen dimensions. Values shown for 0.2 sq. in. specimen.

Line pipe mechanical testing usually omits Reduction of Area (RA) measurement reporting, and Charpy V-Notch (CVN) testing. This prevents use of this pipe as body material above 36 ksi yield strength for API Spec 6A equipment without retesting for Reduction of Area, and in the case of low temperature service, Charpy V-Notch testing as well.

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