ASTM A-106 is the standard for seamless carbon steel pipes designed for High-temperature services.
It is most commonly used in refineries and plants to transport gasses and fluids at high temperature and high pressures.
This specification covers seamless carbon steel pipe for high-temperature service in NPS 1/8 to 48 inclusive, with nominal wall thickness as given in ANSI B36.10, It shall be permissible to furnish pipe having other dimensions provided such pipe complies with all other requirement of this specification.
Pipe order under this specification shall be suitable for bending, flanging, and similar forming operations, and for welding. when the steel is to be welded, it is presupposed that a welding procedure suitable to grade of steel and intended use or service will be utilized.

ASTM A106 Seamless Steel Pipe Grade and Chemical Composition:

Chemical Composition


Grade A

Grade B

Grade C


Carbon (C) Max 0.25 0.30 0.35
Manganese (Mn) max 0.27 – 0.93 0.29 – 1.06 0.29 – 1.06
Phosphorus (P) max 0.035 0.035 0.035
Sulfur (S) max 0.035 0.035 0.035
Silicon (Si) min 0.10 0.10 0.10
Chromium (Cr) max 0.40 0.40 0.40
Copper (Cu) max 0.40 0.40 0.40
Molybdenum (Mo) max 0.15 0.15 0.15
Nickel (Ni) max 0.40 0.40 0.40
Vanadium (V) max 0.08 0.08 0.08

ASTM A106 Seamless Steel Pipe Mechanical Properties:

Mechanical Properties


Grade A Grade B

Grade C

Tensile Strength, min, Psi (Mpa) 48 000 (330) 60 000 (415) 70 000 (485)
Yield Strength, min, Psi (Mpa) 30 000 (205) 35 000 (240) 40 000 (275)


Our Test Methods:

The test methods for the ASTM A106, A, B, C are the Hydrostatic test, Ultrasonic test, Eddy current test, Flux leakage test.

Our Supply Range for Sale:

Standard: ASTM A 106

Grade: A, B, C

Range of out diameter (OD): NPS 1/8 inch to NPS 20 inch, 10.13 mm to 1219 mm

Range of Wall thickness (WT): SCH 10, SCH 20, SCH STD, SCH 40, SCH 80, to SCH 160, 1.24 mm up to 25.4 mm.

Range of length: 1 m up to 16 m.

End Procession: Plain end, Beveled, Threaded.

Coating: Black Paint, Epoxy Coating, Polyethylene Coating, FBE and 3PE

Packing: Plastic caps, in bundles, Steel Strips, Wooden Box, or according to customer requirements.

Different between ASTM A106 & ASTM A53 Pipes