ASTM A106 GrB Seamless Carbon Steel Pipe

ASTM A106 Gr B Seamless Carbon Steel Pipe is a premium quality carbon steel pipe that engineers specifically design for high-temperature service applications. Manufacturers produce this ASTM A106 Gr B Seamless Carbon Steel Pipe through a seamless process, which means it has no welded seams and offers uniform strength throughout the pipe body.

Product Parameters

Outer diameter range: 1/4 inch to 24 inches (13.7mm to 610mm).

Regular sizes include 1/2 inch, 3/4 inch, 1 inch, 2 inches, 4 inches, 6 inches, 8 inches, 10 inches, and 12 inches.

Wall thickness options follow Schedule 20, Schedule 40, Schedule 80, Schedule 120, Schedule 160, STD, XS, and XXS classifications.

Standard lengths come in 6 meters, 12 meters, or we can customize according to project requirements.

The processing technique involves hot finishing or cold drawing seamless methods.

The pipe meets ASTM A106 / ASME SA106 Grade B execution standards. Packaging includes steel strip bundles with waterproof wrapping and plastic caps on both ends to protect threads. We offer various surface treatments including black bare finish, oiled coating, varnish painting, or specialized anti-corrosion coatings.

Chemical Composition (Typical %)

Carbon (C): 0.30 maximum
Manganese (Mn): 0.29 to 1.06
Phosphorus (P): 0.035 maximum
Sulfur (S): 0.035 maximum
Silicon (Si): 0.10 minimum
Chromium (Cr): 0.40 maximum
Molybdenum (Mo): 0.15 maximum
Nickel (Ni): 0.40 maximum
Copper (Cu): 0.40 maximum

Physical Properties

Tensile Strength: 415 MPa (60 ksi) minimum requirement
Yield Strength: 240 MPa (35 ksi) minimum requirement
Elongation: 20 to 30 percent depending on wall thickness specifications
Service Temperature: Suitable for continuous operation up to 427°C (800°F)

Product Applications

This ASTM A106 Gr B Seamless Carbon Steel Pipe serves critical functions in oil and gas refineries where high temperatures occur regularly. Power generation plants use it extensively for boiler systems and superheater connections. Petrochemical facilities rely on this grade for process piping that handles elevated temperatures and pressures. Heat exchangers and condensers often incorporate this material for its reliable performance under thermal stress. Shipbuilding and marine applications benefit from its seamless construction and consistent mechanical properties. Engineers also specify this pipe for industrial steam lines, compressed air systems, and hydraulic tubing applications. Many mills dual-certify this product with API 5L Grade B, giving buyers additional flexibility for projects requiring both standards. The material works well for bending, flanging, and various welding operations during fabrication and installation.