ASTM/ ASME A106/SA106 Seamless Carbon Steel Pipe

ASTM/ASME A106/SA106 seamless carbon steel pipes are used in industrial applications involving high temperatures, including process piping, boiling units, compression stations, and oil refineries. The extra silicon improves the product's performance in high temperature environments, such as steam piping and process applications. ASTM/ASME/SA106 Piping (also included in ASME Code SA/A106) is the standard specification for seamless carbon steel piping in high temperature environments. It is most commonly used in refineries and factories when gases or fluids are transported at high temperature and pressure.

Products Details

Dimension Tolerances

Pipe Type Pipe Sizes Tolerances
  OD≤48.3mm ±0.40mm
Cold Drawn OD≥60.3mm ±1%mm
  WT ±12.5%

Product Display

Chemical Composition

Steel Grade C≤ Mn P≤ S≤ Si≥ Cr≤ Cu≤ Mo≤ Ni≤ V≤
A 0.25 0.27-0.93 0.035 0.035 0.10 0.40 0.40 0.15 0.40 0.08
B 0.30 0.29-1.06 0.035 0.035 0.10 0.40 0.40 0.15 0.40 0.08
C 0.35 0.29-1.06 0.035 0.035 0.10 0.40 0.40 0.15 0.40 0.08

Test requirements for seamless A106 carbon steel pipes

Hydrostatic Test: Check that the test pressure produces a stress on the pipe wall equal to 60% of the specified minimum yield strength (SMYS) at room temperature. Maximum pressure must not exceed 2500 psi for NPS 3 and below and 2800 psi for larger sizes. The pressure is maintained for no less than 5 seconds.

Mechanical test

Tensile test: NPS 8 and above acceptable transverse or longitudinal test Tensile Tests Less than NPS 8: Longitudinal Tests Only Flattening test: NPS 2 and above Bend Test (Cold): NPS 2 and belowHaihui Steel is the world leader in the supply of A106/SA106 pipe, stocking a full line of Grade B/C pipes in sizes ranging from NPS 1/2″ to NPS 36″ with nominal (average) wall thicknesses as specified in ANSI B36.10 Show. Other sizes of pipe may be supplied if the pipe meets all other requirements of this specification. Pipe ordered in accordance with this specification shall be suitable for bending, flanging, welding and similar forming operations. A full range of SA/A106 stock is available in Annexes 10 to 160, STD, XS, XXS. Size(mm): 
OD(Out Diameter) W.T(Wall Thickness) L(Length)
6.0-323 1.0-30.0 max 12000

Mechanical Properties

Steel Grade Tensile Strength(Mpa) Yield Strength(Mpa) Elongation(%) Delivery Condition
A ≥330 ≥205 20 Annealed
B ≥415 ≥240 20 Annealed
C ≥485 ≥275 20 Annealed

Contact us

Please feel free to give your inquiry in the form below We will reply you in 24 hours