Cambridge™ 10' pipe is composed of durable, schedule 40 black steel and is hydrostatically tested and available in sizes to fit residential and light commercial gas and air applications. Our 10' pipe is made to ASTM A53 specifications and has protective durable plastic end caps that help ensure the pipe threads remain undamaged in transport. They are not for use with drinking water. Always check your local plumbing and gas codes before starting any piping projects.