American standard for low and medium pressure carbon steel boiler tubes

Boiler tubes are categorized into three main types based on the material: carbon steel, alloy steel, and stainless steel.

Carbon Steel Boiler Tubes:

Made from low carbon and low alloy structural steel, these tubes have lower hardness and limited heat resistance, making them suitable for low-temperature and general working conditions.

Alloy Steel Boiler Tubes:

Alloyed with other elements, these tubes improve on the hardness and heat resistance of carbon steel, making them appropriate for high-temperature, high-pressure, and specialized working conditions.

Stainless Steel Boiler Tubes:

Commonly made from materials like 304 and 316 stainless steel, these tubes are known for their excellent corrosion resistance, ideal for use in chemical, petroleum, and sanitary environments.

American Standards for Low and Medium Pressure Carbon Steel Boiler Tubes:

- ASTM A178:

This standard covers electric resistance welded (ERW) carbon steel and carbon manganese steel tubes for boilers and superheaters. It applies to pipes with diameters from 1/2 inch to 5 inches and wall thicknesses from 0.035 to 0.360 inches, requiring compliance with specific mechanical properties and chemical composition guidelines.

- ASTM A192:

Applicable to seamless carbon steel boiler tubes with diameters ranging from 1/2 inch to 7 inches and wall thicknesses of 0.049 inches or more. It includes requirements for mechanical performance, chemical composition, heat treatment, and specific testing standards.

- ASTM A210:

This standard is for seamless carbon steel pipes used in boilers and superheaters. It covers pipes with diameters from 1/2 inch to 5 inches and wall thicknesses between 0.035 to 0.500 inches, with additional high-temperature creep performance requirements.

- ASTM A213:

Applicable to seamless ferritic and austenitic steel tubes used in high-temperature boiler and heat exchanger applications. This standard covers pipes with diameters from 1/8 inch to 5 inches and wall thicknesses between 0.015 and 0.500 inches, focusing on performance in high-temperature and high-pressure environments.

- ASTM A333:

This standard governs seamless and welded steel pipes for cryogenic service. It applies to pipes with diameters from 1/8 inch to 24 inches and wall thicknesses between 0.015 to 1.000 inches. ASTM A333 also includes specialized testing for low and high-temperature impacts and cold bending.