ASTM A618 High-Strength Structural Tubing

ASTM A618/A618M-21 is a standard issued by the American Society for Testing and Materials (US-ASTM) and is classified under the 23.040.10 iron and steel pipe category in the International Standard Classification. This standard deals primarily with requirements and specifications for high-strength structural pipes.

Specifically, it includes detailed regulations on the size, wall thickness, material properties, manufacturing process, inspection methods, etc. of pipes. For example, it might specify a flat size range for square and rectangular tubes, and a diameter range for round tubes. In addition, the standard may also cover different grades of steel and specify key indicators such as its mechanical properties and chemical composition.

ASTM A618 high-strength structural pipe has excellent mechanical properties and welding performance to meet the needs of various high-strength structural applications. They are often used in bridges, buildings, highways, oil and gas transmission and other fields, where steel pipes are required to have excellent load-bearing capacity and corrosion resistance.