Seamless Pipe A106 B Normal Use
ASTM/ASME A106/SA106 seamless carbon steel pipe is used in industrial applications involving high heat, including process piping, boiling plants, compression stations and refineries and other fields. The additional silicon boosts this product’s performance in high-temperature environments, such...
ASTM/ASME A106/SA106 seamless carbon steel pipe is used in industrial applications involving high heat, including process piping, boiling plants, compression stations and refineries and other fields.
The additional silicon boosts this product’s performance in high-temperature environments, such as steam lines and processing applications.
Purchaser may specify NDE in lieu of hydrostatic test or neither. Unless otherwise specified, pipe is furnished with plain ends.
Mechanical Properties – Tensile Requirements
|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|
|Element||Grade A||Grade B||Grade C|
|Carbon max. %||0.25||0.30||0.35|
|Manganese %||0.27 – 0.93||0.29 – 1.06||0.29 – 1.06|
|Phosphorus max %||0.035||0.035||0.035|
|Sulfur max %||0.035||0.035||0.035|
|Silicon, min %||0.10||0.10||0.10|
Testing Requirements for seamless A106 carbon steel pipe
Tensile Test: Either transverse or longitudinal are acceptable for NPS 8 and larger
Tensile tests smaller than NPS 8: Longitudinal testing only
Flattening Test: NPS 2 and larger
Bending Test (cold): NPS 2 and under
Permissible Variations in Dimension
Wall thickness: The minimum wall thickness at any point shall not be more than 12.5% under the nominal wall thickness specified.
Weights per foot: The weight of any individual length shall not vary more than 10% over and 3.5% under that specified. NOTE – NPS 4 and smaller are weighed in lots. Larger sizes are weighted by individual length.
Outside diameter: Shall not vary from standard specified below at any point.
|1 ½ and smaller||+1/64”||-1/64”|
Lengths of A106 seamless carbon steel pipe
Lengths of A106 seamless carbon steel pipe must be specified on order. No “jointers” are permitted unless otherwise specified. If no definite lengths are required, the following practice applies:
Single random – 16’ – 22’ (5% may be 12’ – 16’)
Double random – Minimum length is 22’. Minimum average is 35’ (5% may be between 16’ – 22’)
Rolled, die stamped, or paint stenciled (manufacturer’s option).
Manufacturer’s name, brand, or trademark
A106 A, A106 B, or A106 C
Hydrostatic test pressure and/or NDE, or NH if neither is specified
Size, length, weight per foot (NPS 4 and larger)