stands for the American Petroleum Institute Recommended Practice 5L2 . It is titled: "Recommended Practice for Internal Coating of Line Pipe for Non-Corrosive Gas Transmission Service."
: Includes bending tests (to ensure the coating doesn't crack or peel when the pipe is bent) and peeling tests. Resistance Tests Api Rp 5l2 Pdf
The primary purpose of this recommended practice is to ensure that the coating applied to the interior of the pipe adheres to strict quality control measures. This serves two main functions: This serves two main functions: First published in
First published in the 1960s and revised over the decades, this standard outlines the requirements for the internal coating of pipes used in gas transmission lines. While the title specifies "non-corrosive gas," the standard is widely referenced and adapted for various transmission environments where the reduction of friction and protection of the steel substrate is required. Api Rp 5l2 Pdf