API line pipe 1.Standards: API 5L 2. Grade: A, B, X42, X46, X52, X60, X70, X80 3. Size: 2 3/8"--70" Seamless pipeline ... , Welded steel pipeLine Pipes used for oxygen, water, and oil delivery pipe ... in oil and natural gas industry:API line pipeStandards: API 5LGrade: A, B, X42, X46, X52, X60, X70, X80Size: 2 3/8"--70"API ...