Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe

A106 GR b pipe


Sizes (ERW): 1/2" NB - 24" NB

Sizes (Seamless): 1/2" NB - 60" NB
Sizes (SAW): 16" NB - 100" NB  

This specification covers seamless carbon steel pipe for high-temperature service

Wall Thickness available:Schedule 20 - Schedule XXS

A106 GR b pipe (also known as ASME SA106 pipe) is commonly used in the transport fluids and gasses that exhibit higher temperatures and pressure levels.

Material Grades

 High Temperature Seamless Pipe ASTM A106 Gr. B/C, API 5L Gr. B, ASTM A53 Gr. B
High Yield Seamless Pipe API 5L Gr. X42/X46/X52/X56/X60/X65/X70/X80 PSL-1/PSL-2
High Yield ERW/SAW Pipe

API 5L Gr. X42/X46/X52/X56/X60/X65/X70/X80 PSL-1/PSL-2

ISO 3183 Gr.L245, L290, L320, L360, L390, L415, L450, L485

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

Chemical Composition ASTM A106 Carbon Steel Pipes Grades

  Grade A Grade B Grade C Total of Cr, Cu, Mo, Ni, and V shall not exceed 1%
Carbon max. % 0.25 0.30 0.35
Manganese % 0.27 to 0.93 0.29 to 1.06 0.29 to 1.06
Phosphorous, max. % 0.035 0.035 0.035
Sulfur, max. % 0.035 0.035 0.035
Silicon, min.% 0.10 0.10 0.10
Chrome, max. % 0.40 0.40 0.40
Copper, max. % 0.40 0.40 0.40
Molybdenum, max. % 0.15 0.15 0.15
Nickel, max. % 0.40 0.40 0.40
Vanadium, min.% 0.08 0.08 0.08

Permissible Variations in Wall Thickness

The minimum wall thickness at any point shall not be more than 12.5% under the nominal wall thickness specified.

Permissible Variations in  Weights per Foot Weight of any length shall not vary more than 10% over and 3.5% under that specified.

NOTE -- NPS 4 and smaller -- weighed in lots. Larger sizes shall be weighed separately by length. Permissible Variations in Outside Diameter
Outside Diameter at any point shall not vary from standard specified more than:
 

Tensile Requirements
 

  Seamless
  Grade A Grade B Grade C
Tensile Strength, min., psi 48,000 60,000 70,000
Yield Strength, min., psi 30,000 35,000 40,000

 

Hydrostatic Testing

Inspection test pressures produce a stress in the pipe wall equal to 60% of specified minimum yield strength (SMYS) at room temperature. Maximum Pressures are not to exceed 2500 psi for NPS3 and under 2800 psi for the larger sizes. Pressure is maintained for not less than 5 seconds.
Mechanical Tests Specified

Bending Test (Cold) -- NPS 2 and under.

  Degree of Bend Diameter of Mandrel
For Normal A106 Uses 90 12 x nom dia. of pipe
For Close Coiling 180 8 x nom dia. of pipe

Tensile Test -- NPS 8 and larger -- either transverse or longitudinal acceptable

Smaller than NPS 8 -- weighed in lots. Larger sizes -- by length.
Flattening Test -- NPS 2-1/2 and larger.

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