ASTM A106 Steel Pipe

IBC (Tianjin) Industrial Co., Ltd manufactures and export ASTM A106 Steel Pipe for decades years. ASTM A106 specification is a standard specification for seamless carbon steel pipe for high-temperature service. ASTM A106 seamless pressure pipe (also known as ASME SA106 pipe) is commonly used in the construction of oil and gas refineries, power plants, petrochemical plants, boilers, and ships where the piping must transport fluids and gases that exhibit higher temperatures and pressure levels.

ASTM A106 Steel Pipe-1

What is the Grade of A106 Pipe?

A106 pipe is American standard material, including A, B, C three grades, the ingredients of A106 A is carbon and silicon, the tensile strength grade is 330 MPa. The ingredients of A106 B is carbon、manganese and silicon, the tensile strength grade is 415 MPa. The ingredients of A106 C is carbon, manganese and silicon components, the tensile strength grade is 485 MPa.

ASTM A106 seamless pressure pipes (also known as ASME SA106 pipes) are commonly used in the construction of oil and gas refineries, power plants, petrochemical plants, boilers and ships. These pipes must carry fluids that exhibit higher temperature and pressure levels And gas.

What is ASTM A106 Equivalent to?

ASTM A106 Grade B pipe is equivalent to ASTM A53 Grade B and API 5L B on chemical composition and mechanical properties, in general use carbon steel and yiled strength minimum 240 MPa, tensile strength 415 Mpa. 

Comparation of Chemical Composition of ASTM A106 & ASTM A53


Mechanical Properties of ASTM A106 & ASTM A53

ASTM A106/ASME SA106 includes three grades A, B and C, and common use grade is A106 Grade B. It used in different industries not only for pipeline systems like oil and gas, water, mineral slurry transmission, but also for boiler, construction, structural purposes.

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What Specified inSpecification of ASTM A106 Steel Pipe?

(1) Dimension

This specification covers seamless carbon steel pipe for high-temperature service in NPS 1⁄8 to NPS 48 [DN 6 to DN 1200] and [10.3mm to 1219.2mm] inclusive, with nominal wall thickness as given in ASME B36.10M. It shall be permissible to furnish pipe having other dimensions provided such pipe complies with all other requirements of this specification. IBC produce ASTM A106 steel pipe in high standard, high strength, high wear and tear resistant.

(2) 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. Such as, the wall thickness we order in steel factory is 10 mm, the actural wall thickness will between 8.75 mm to 11.25 mm. But we could customized according to customer’s requirements.

(3) 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.

(4) Permissible Variations in Outside Diameter

Outside Diameter at any point shall not vary from standard specified more than:

Permissible Variations in Outside Diameter

(5) 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 must stay under 2800 psi for the larger sizes. Pressure is maintained for not less than 5 seconds.

(6) Lengths

Lengths required shall be specified on order. No “jointers” permitted unless otherwise specified. If no definite lengths required, following practice applies: Single Random — 17′ ~ 24′ lengths Double Random — 36′ ~ 44′ lengths

(7) Required Markings on Each Length

(On Tags attached to each Bundle in case of Bundled Pipe) Rolled, Stamped, or Stenciled (Mfrs. Option) Manufacturer’s name or brand. Length of pipe. A106 A, A 106 B, A 106 C. ANSI schedule number. Hydrostatic test pressures and/or NDE; Weight per foot (NPS 4 and larger) or NH if neither is specified. Additional “S” if tested supplementary requirements.


IBC (Tianjin) Industrial Co., Ltd could supply all kinds of pipes, not only ASTM A106 steel pipe, but also ASTM A53, API 5L PSL 1 & PSL 2, API 5CT, and other specifications. And we manufacturer not only seamless steel pipe, also SSAW, LSAW, ERW and etc. Together with steel coils and equipment of producing pipes.

ASTM A106 Steel Pipe

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