ASTM A53 Grade B Pipes, compliant with ASME SA53, are carbon steel pipes designed for mechanical and pressure applications, including water, gas, oil, and air conveyance. Available in seamless, electric-resistance-welded (ERW), and furnace-welded types, these pipes offer a minimum tensile strength of 415 MPa and yield strength of 240 MPa, making them ideal for demanding applications in water supply, oil and gas pipelines, and fire sprinkler systems.

Manufactured through seamless, ERW, or furnace-welded processes, ASTM A53 Grade B Pipes come in sizes from NPS 1/8 to 26 [DN 6–650] with wall thicknesses ranging from SCH 10 to SCH 160. The pipes can be black or hot-dipped galvanized, with galvanization providing enhanced corrosion-resistant steel pipes for prolonged durability in harsh environments. The ERW pipes undergo heat treatment post-welding to ensure weld integrity, eliminating untempered martensite.

Rigorous testing, including tensile, flattening, hydrostatic, and nondestructive electric tests, ensures compliance with ASTM A53 standards. These pipes are suitable for welding, coiling, bending, and flanging, with specific qualifications for continuous-welded pipes. Available in standard lengths (16–22 ft for single random, 22–35 ft for double random) or customized, they meet diverse project requirements.

Compared to ASTM A106 Grade B, ASTM A53 Grade B Pipes are optimized for low to medium-pressure applications, offering cost-effective solutions with excellent strength and versatility. Their galvanized variants resist corrosion, making them suitable for outdoor and high-moisture environments like water distribution and HVAC systems.

ASTM A53 Grade B Pipes address challenges like pipeline corrosion, wear, and pressure demands, providing reliable, durable solutions for fluid conveyance and structural applications in industrial and construction settings.

Heat treatment:

After welding,all tubes shall be heat treated at a temperature of 1650°F(900℃) or higher and followed by cooling in air or in the cooling chamber of a controlled-atmosphere furnace,Cold-drawn tubes shall be heat treated after the final cold-draw pass at a temperature of 1200°F(650℃)or higher.

Surface Condition:

Finished tubes shall be free of scale,A slight amount of oxidation will not be considered as scale.

Mechanical Tests Required:

Flattenting Test/Flaring test/Flange test/Crush test/Tension test/Reverse Flattening test/Hydrostatic or Nondestructive Electric Test

ASTM A53 Grade B Pipe Overview

Industrial Materials

What Is ASTM A53 Grade B Pipe?

ASTM A53 Grade B pipe is a carbon steel pipe, either seamless or welded, designed for mechanical and pressure applications, including water, gas, and steam transport.

ASTM A53 Grade B pipe, part of the ASTM A53 standard, is manufactured using either seamless or electric resistance welded (ERW) processes. It is a carbon steel pipe with higher strength than Grade A, suitable for mechanical, pressure, and structural applications. Commonly used for conveying water, gas, steam, and air, it is widely applied in industries like construction, oil and gas, and plumbing, meeting standards such as ASTM A53 and ASME B36.10.

Grade B pipes typically have a minimum tensile strength of 60,000 psi and a minimum yield strength of 35,000 psi. Available with coatings like galvanized, black, or anti-corrosion (e.g., 3LPE), they undergo rigorous testing, including hydrostatic, non-destructive, and flattening tests, to ensure weld integrity and durability for applications like pipelines, structural supports, and fire protection systems.

ASTM A53 Grade B pipes offer reliable, high-strength solutions for fluid transport and structural applications, ensuring performance and longevity.