Which ASTM specification is referenced for steel, black, and hot dipped pipe?

The correct choice is ASTM A 53, which is the specification that covers seamless and welded black and hot-dipped galvanized steel pipes for use in structural and pressure applications. This standard is integral for the manufacturing of piping used in plumbing, heating, and general usage in the gas industry.

ASTM A 53 sets forth requirements for the pipe's physical and chemical properties, ensuring that it is suitable for a variety of service conditions, including high pressure and temperature. The specification provides criteria for both galvanized and non-galvanized pipes, thus making it comprehensive for the intended applications, which enhances the reliability and safety of gas installations by ensuring that the materials are appropriate for their specific uses.

Understanding the significance of ASTM A 53 is vital for anyone involved in the installation or maintenance of systems that utilize these pipes, as adherence to this standard helps prevent failures and enhances the performance and lifespan of the piping systems.