LAC 43:XI.4513. Bending of Pipe (Formerly §1513)

A. Pipe must not have a wrinkle bend. B. Each field bend must comply with the following. 1. A bend must not impair the serviceability of the pipe. 2. Each bend must have a smooth contour and be free from buckling, cracks, or any other mechanical damage. 3. On pipe containing a longitudinal weld, the longitudinal weld must be as near as practicable to the neutral axis of the bend unless: a. the bend is made with an internal bending mandrel; or b. the pipe is 12 inches or less in outside diameter or has a diameter to wall thickness ratio less than 70. C. Each circumferential weld which is located where the stress during bending causes a permanent deformation in the pipe must be nondestructively tested either before or after the bending process.