{"data":{"id":"us/49-cfr-192.315","jurisdiction":"us","citation":"49 CFR 192.315","heading":"Wrinkle bends in steel pipe.","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(b) Each wrinkle bend on steel pipe must comply with the following:\n(1) The bend must not have any sharp kinks.\n(2) When measured along the crotch of the bend, the wrinkles must be a distance of at least one pipe diameter.\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(4) On pipe containing a longitudinal weld the longitudinal seam must be as near as practicable to the neutral axis of the bend.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER I—PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER D—PIPELINE SAFETY","PART 192—TRANSPORTATION OF NATURAL AND OTHER GAS BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS","Subpart G—General Construction Requirements for Transmission Lines and Mains"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"c1ab6227a7dda366fc402b7d289d4b1cab6167ed1f174afd15b7f34d481b8cb0","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-192.313","next":"us/49-cfr-192.317"},"notice":"GroundRules: Original legal text. Not legal advice."}