{"operation":"document","citation":"49 CFR 192.315","title":"Wrinkle bends in steel pipe.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"(a) A wrinkle bend may not be made on steel pipe to be operated at a pressure that produces a hoop stress of 30 percent, or more, of SMYS.\n\n(b) Each wrinkle bend on steel pipe must comply with the following:\n\n(1) The bend must not have any sharp kinks.\n\n(2) When measured along the crotch of the bend","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-192-315.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-192-315.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-192-315","source_url":"https://www.ecfr.gov/on/2026-08-18/title-49/section-192.315","body":"(a) A wrinkle bend may not be made on steel pipe to be operated at a pressure that produces a hoop stress of 30 percent, or more, of SMYS.\n\n(b) Each wrinkle bend on steel pipe must comply with the following:\n\n(1) The bend must not have any sharp kinks.\n\n(2) When measured along the crotch of the bend, the wrinkles must be a distance of at least one pipe diameter.\n\n(3) On pipe 16 inches (406 millimeters) or larger in diameter, the bend may not have a deflection of more than 1 1/2° for each wrinkle.\n\n(4) On pipe containing a longitudinal weld the longitudinal seam must be as near as practicable to the neutral axis of the bend.\n\n[35 FR 13257, Aug. 19, 1970, as amended by Amdt. 192-85, 63 FR 37503, July 13, 1998]","truncated":false,"body_characters":717}