The carbon steel API 5L X42 pipe comes in seamless and welded steel line pipe for pipeline transportation systems in the petroleum and natural gas industries. The digit number 42 following the "X" indicates the minimum yield strength (42000 PSI) of API 5L X42 pipe. The carbon steel API 5L X42 pipe is suitable for conveying gas, water, and oil.

The carbon steel API 5L X42 pipe covers two product specification levels, that is: API 5L X42 PSL 1 and API 5L X42 PSL 2.

The carbon steel API 5L X42 pipe includes plain-end, threaded-end, and bevel-end pipe, and pipe with ends prepared for use with special couplings.