How thick is a schedule 80 pipe?

Schedule 80 pipe ranges in nominal thickness from 0.10 inches for 1/8-inch pipe size to 1.22 inches for 24-inch pipe size according to Engineering Toolbox. The 1/8-inch schedule 80 pipe has an external diameter of 0.41 inches and an internal diameter of 0.22 inches.

The 24-inch schedule 80 pipe has an external diameter of 24 inches and an internal diameter of 21.56 inches. The weight of 1/8-inch schedule 80 pipe is 0.31 pounds per foot, and the weight of 24-inch schedule 80 pipe is 297 pounds per foot. Two more nominal thickness examples for schedule 80 pipe include 4-inch pipe size schedule 80 pipe at 0.34 inches and 10-inch pipe size schedule 80 pipe at 0.59 inches.