ASTM A106 is a standard specification for seamless carbon steel pipes, including ASTM A106 Gr. B, suitable for high-temperature and high-pressure applications. The specification aims to ensure that pipes can withstand the rigorous demands of various industries, including power generation, oil and gas, and chemical processing. ASTM A106 seamless pipes are recognized for their durability, strength, and resistance to extreme environmental conditions.
Grade A | Grade B | Grade C | |
---|---|---|---|
Yield strength | 30 000 PSI | 35 000 PSI | 40 000 PSI |
Tensile strength | 48 000 PSI | 60 000 PSI | 70 000 PSI |
Thickness tolerance | -12.5% | -12.5% | -12.5% |
ASTM A106 is a standard specification for seamless carbon steel pipes, including ASTM A106 Gr. B, suitable for high-temperature and high-pressure applications. The specification aims to ensure that pipes can withstand the rigorous demands of various industries, including power generation, oil and gas, and chemical processing. ASTM A106 seamless pipes are recognized for their durability, strength, and resistance to extreme environmental conditions.
ASTM A106 seamless pipes are manufactured through either a hot-finished or cold-drawn process to achieve a seamless and uniform structure. Various ASTM specifications and standards govern the quality, testing, and dimensions of metal pipe, ensuring their integrity and functionality in different applications. This manufacturing process involves heating solid steel billets and then piercing them to form hollow tubes.
To verify the integrity and reliability of ASTM A106 pipes, a hydrostatic test is performed. This test involves filling the pipe with water or another suitable fluid and applying a high-pressure load to the pipe wall. The stress produced in the pipe wall during hydrostatic testing should be pipe wall equal to 60% of the specified minimum yield strength at room temperature.
ASTM A106 Grade B pipes undergo rigorous testing and inspection to ensure their quality and reliability. These tests include hydrostatic testing, tensile testing, flattening testing, and bending testing. Each pipe is inspected for diameter tolerance, wall thickness, and surface finish to ensure it meets the required standards. Additionally, macroetch testing is performed to verify the internal surface quality of the pipes, ensuring they are free from defects and suitable for high-stress applications.
ASTM A106 pipes are available in a wide range of dimensions to cater to various industrial needs.
The nominal diameters range from 1/8 inch to 30 inches, providing flexibility in choosing the appropriate size for specific applications.
Additionally, these pipes come in different schedules (Sch 5 up to Sch 160), which refer to the wall thickness of the pipe. The schedule number increases with the wall thickness, indicating the pipe’s ability to handle higher pressures.
ASTM A106 is a standard specification for seamless carbon steel pipe intended for high-temperature service. It covers three grades: A, B, and C, with Grade B being the most commonly used due to its balanced properties. The pipe is available in a range of sizes, from NPS 1/8 inch to NPS 48 inches, and is manufactured in accordance with the dimension standard of ANSI B36.10 / ASME B36.10. This ensures that the pipes meet the stringent requirements for high-temperature and high-pressure applications.