{"data":{"id":"us/49-cfr-192.313","jurisdiction":"us","citation":"49 CFR 192.313","heading":"Bends and elbows.","body":"(a) Each field bend in steel pipe, other than a wrinkle bend made in accordance with § 192.315, must comply with the following:\n(1) A bend must not impair the serviceability of the pipe.\n(2) Each bend must have a smooth contour and be free from buckling, cracks, or any other mechanical damage.\n(3) On pipe containing a longitudinal weld, the longitudinal weld must be as near as practicable to the neutral axis of the bend unless:\n(i) The bend is made with an internal bending mandrel; or\n(ii) The pipe is 12 inches (305 millimeters) or less in outside diameter or has a diameter to wall thickness ratio less than 70.\n(b) Each circumferential weld of steel pipe 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.\n(c) Wrought-steel welding elbows and transverse segments of these elbows may not be used for changes in direction on steel pipe that is 2 inches (51 millimeters) or more in diameter unless the arc length, as measured along the crotch, is at least 1 inch (25 millimeters).\n(d) An operator may not install plastic pipe with a bend radius that is less than the minimum bend radius specified by the manufacturer for the diameter of the pipe being installed.","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":"71b199f711eb8310e3a16c9d411bb43cefce5ae54c55dc8c35db1ab7d6b19ebd","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-192.311","next":"us/49-cfr-192.315"},"notice":"GroundRules: Original legal text. Not legal advice."}