ASTM A106 Gr.B Pipes

ASTM A106 Grade B Pipes are seamless carbon steel pipes that are widely used in various industries for high-temperature service.

Size inspection report
ASTM A106 Gr.B Pipes 89*5.4mm, ASTM A-106 Grade B
2inch, XS, BE, ASTM A-106 Grade B. 2inch, XS, BE, ASTM A-106 Grade B
20inch, XS, BE, ASTM A-106 Grade B. 20 inch, XS, BE, ASTM A-106 Grade B
6 inch, XS, BE, ASTM A-106 Grade B. 6 inch, XS, BE, ASTM A-106 Grade B
8 inch, XS, BE, ASTM A-106 Grade B. 8 inch, XS, BE, ASTM A-106 Grade B
10 inch, BE, ASTM A-106 Grade B. 10 inch, BE, ASTM A-106 Grade B
10 inch, XS, BE, ASTM A-106 Grade B. 10 inch, XS, BE, ASTM A-106 Grade B
12 inch, BE, ASTM A-106 Grade B. 12 inch, BE, ASTM A-106 Grade B
14inch Seamless pipe, beveled ends (BE), API 5L Gr. B / L245. 14 inch, BE, API 5L Gr. B / L245.

ASTM A106 Grade B Pipes are made from carbon steel, with a maximum carbon content of 0.30%. ASTM A106 Grade B Pipes are commonly used in industries such as oil and gas, petrochemical, power generation, and more. They are suitable for conveying fluids and gases at high temperatures and pressures.

ASTM A106 Grade B pipes are seamless carbon steel pipes designed for high-temperature service. They are widely used in various industries, including oil and gas, water transmission, and boiler systems, where high strength and durability are required.

Key Features:

  • Minimum yield strength of 35 KSI (240 MPa) and a minimum tensile strength of 60 KSI (415 MPa).
  • Available in sizes from NPS 1/8 (DN6) to NPS 48 (DN1200).
  • Manufactured using killed steel, with the primary melting process being open-hearth, basic-oxygen, or electric-furnace.
  • Suitable for bending, flanging, and similar forming operations, and for welding.

Applications:

Used in pipeline systems for oil and gas, water, and mineral slurry transmission. Also used in boiler systems and for construction and structural purposes.

Material and Construction:

The pipes are made from carbon steel with a seamless construction, ensuring no weld seam, which can be a point of failure in lower-quality tubes. They are manufactured in different schedules, such as SCH 10, SCH 20, SCH 40, SCH 80, and SCH 160.

Advantages:

  • High-pressure and high-temperature capability.
  • Excellent mechanical properties and ductility.
  • Good weldability and formability.
  • Wide range of sizes and thicknesses for versatile application.

ASTM A106 / ASME SA106 Seamless Carbon Steel Pipe

Seamless carbon steel pipe for high-temperature service in power, refining, petrochemical, boiler and marine applications.

Grades & Mechanical Properties

Grade Primary Alloying Elements Min. Tensile Strength
Grade A C, Si 330 MPa (48 ksi)
Grade B C, Mn, Si 415 MPa (60 ksi)
Grade C C, Mn, Si 485 MPa (70 ksi)

Size Range & Manufacturing

Covers seamless hot-finished and cold-finished pipe from NPS 1/8 to NPS 48 (DN 6–1200), with nominal wall thickness per ASME B36.10M. Non-standard dimensions are permitted provided all other specification requirements are met.

Pipes ≤ DN40 may be hot-rolled or cold-drawn; pipes ≥ DN50 are typically hot-rolled. Cold-drawn execution for larger sizes requires mutual agreement.

Key Technical Requirements

Wall Thickness Tolerance

Minimum wall thickness shall not be more than 12.5% under the nominal wall thickness.

Flattening Test

Not mandatory, but the pipe shall be capable of meeting Supplementary Requirement S3 if tested.

Frequently Asked Questions

A106 vs. SA106
Technically identical. ASTM A106 is the ASTM specification; SA106 is the ASME designation. ASME Section II adopts ASTM A106 by reference.
Meaning of “CD” in SA106 Gr.B
“CD” denotes Cold Drawn. Standard supply is hot-rolled for ≥ DN50; cold-drawn execution is optional by agreement.
SA-106 vs SA-106M
Identical material; SA-106 uses imperial units, SA-106M uses metric units.
Engineering Summary:
SA106 seamless pipe is the industry standard for high-temperature, high-pressure carbon steel piping. Its consistent chemistry, reliable mechanical properties and broad dimensional coverage make it a preferred material for global EPC projects.

Chemical composition (%) of ASTM A106

Grade C≤ Mn P≤ S≤ Si≥ Cr≤ Cu≤ Mo≤ Ni≤ V≤
ASTM A106 Grade A 0.25 0.27-0.93 0.035 0.035 0.10 0.40 0.40 0.15 0.40 0.08
ASTM A106 Grade B 0.30 0.29-1.06 0.035 0.035 0.10 0.40 0.40 0.15 0.40 0.08
ASTM A106 Grade C 0.35 0.29-1.06 0.035 0.035 0.10 0.40 0.40 0.15 0.40 0.08

ASTM A 106 Grade B shall conform to a carbon equivalent (CE) of 0.50 maximum as determined by the following formula:
CE = %C + %Mn/6 + (%Cr + %Mo + %V)/5 + (%Ni + %Cu)/15 . A lower Carbon equivalent ration maximum may be agreed upon between the purchaser and the producer. S5.3 The Carbon equivalent ration shall be reported on the MILL test report.

Mechanical Properties of ASTM A106

Grade Rm Mpa Tensile Strength Yield Point (Mpa) Elongation Delivery Condition
ASTM A106 Grade A ≥330 ≥205 20 Annealed
ASTM A106 Grade B ≥415 ≥240 20 Annealed
ASTM A106 Grade C ≥485 ≥275 20 Annealed

Equivalent Designation

DIN EN BS NFA ASTM ASME
DIN 17175 Grade St 45.8 EN P235GH Grade 10216-2 NFA A 49-215 Grade TU 42-c ASTM A106 Grade B ASME SA 106 Grade B –

The chemical composition of the material does not correspond to Chinese materials, and the mechanical properties are similar to Chinese (GB/T699) 20# steel. ASTM is a set of American steel pipe standards. ASTM steel pipe A106 A corresponds to the Chinese standard is GB8163 and the material is 10# steel. A106 B corresponds to the Chinese standard. The GB8163 material is 20#, and A106 Gr.B does not correspond to Chinese materials.

A106B API 5L GRB A53GRB Seamless pipes are in stock

A106B API 5L GRB A53GRB Seamless pipes
A106B API 5L GRB A53GRB Seamless pipes
A106B API 5L GRB A53GRB Seamless pipes
A106B API 5L GRB A53GRB Seamless pipes
A106B API 5L GRB A53GRB Seamless pipes
A106B API 5L GRB A53GRB Seamless pipes

Features Specifications

OD(mm) Wall Thickness Unit(mm)
　 2 2.5 3 3.5 4 4.5 5 6 6.5-7 7.5-8 8.5-9 9.5-10 11 12
Φ25-Φ28 ● ● ● ● ● ● 　 　 　 　 　 　 　 　
Φ32 　 ● ● ● ● ● ● 　 　 　 　 　 　 　
Φ34-Φ36 　 ● ● ● ● ● ● 　 　 　 　 　 　 　
Φ38 　 ● ● ● ● ● ● 　 　 　 　 　 　 　
Φ40 　 　 ● ● ● ● ● 　 　 　 　 　 　 　
Φ42 　 　 ● ● ● ● ● 　 　 　 　 　 　 　
Φ45 　 　 ● ● ● ● ● ● 　 　 　 　 　 　
Φ48-Φ60 　 　 ● ● ● ● ● ● ● 　 　 　 　 　
Φ63.5 　 　 　 ● ● ● ● ● ● ● 　 　 　 　
Φ68-Φ73 　 　 　 　 ● ● ● ● ● ● 　 　 　 　
Φ76 　 　 　 　 ● ● ● ● ● ● ● ● ● ●
Φ80 　 　 　 　 ● ● ● ● ● ● ● ● ● ●
Φ83 　 　 　 　 ● ● ● ● ● ● ● ● ● ●
Φ89 　 　 　 　 ● ● ● ● ● ● ● ● ● ●
Φ95 　 　 　 　 ● ● ● ● ● ● ● ● ● ●
Φ102 　 　 　 　 ● ● ● ● ● ● ● ● ● ●
Φ108 　 　 　 　 ● ● ● ● ● ● ● ● ● ●
Φ114 　 　 　 　 　 ● ● ● ● ● ● ● ● ●
Φ121 　 　 　 　 　 ● ● ● ● ● ● ● ● ●
Φ127 　 　 　 　 　 ● ● ● ● ● ● ● ● ●
Φ133 　 　 　 　 　 ● ● ● ● ● ● ● ● ●
Φ140 　 　 　 　 　 　 ● ● ● ● ● ● ● ●
Φ146 　 　 　 　 　 　 ● ● ● ● ● ● ● ●
Φ152 　 　 　 　 　 　 ● ● ● ● ● ● ● ●
Φ159 　 　 　 　 　 　 ● ● ● ● ● ● ● ●
Φ168 　 　 　 　 　 　 ● ● ● ● ● ● ● ●

Note:

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