A106 Seamless Carbon Steel Pipe


A106 Seamless Carbon Steel Pipe

Seamless Carbon Steel Pipe

Hydrostatic Test of A106 pipes:

The hydrotest shall apply a pressure equal to 60% of the minimum yield strength for at least 5 seconds at atmospheric conditions. The maximum pressure shall not exceed 2500 psi for pipes up to 3 inches, and 2800 for larger sizes. If additional, non standard, tests are executed the pipe shall bear an “S” mark on each lenght or pipe bundle.

Pipe marking:Each length of pipe (or bundle for smaller diameters) shall have the following markings applied:

Manufacturer name

Material grade(ASTM A106 A / B / C )

Diameter and ANSI schedule (from 10 to 160 and XXS)

Pipe length

Heat number

Hydrostatic test pressure or NDE

Weight / foot

Chemical composition:

Chemical composition, %
A106 Grade A0.250.27-0.930.0350.0350.100.400.400.150.400.08
A106 Grade B0.300.29-1.060.0350.0350.100.400.400.150.400.08
A106 Grade C0.350.29-1.060.0350.0350.100.400.400.150.400.08

ASTM A106 / ASME SA106 pipes are seamless carbon steel pipes used for high tempertaure applications (up to 750 degrees F). These pipes are widely used in the oil & gas, petrochemical, power generation and ship-building industries (examples: refineries, downstream plants, vessels. boilers and towers). A106 pipes are particularly suited whenever the transported fluid has either high temperature or high pressure (or both combined).

ASTM A106 / SA106 pipes are available in size range from 1/2 to 28 inches, and in pipe schedules from 10 to 160. These pipes are supplied either in single random lenght (17-24′) or double random lenght (36 -44′).

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