---
kind: "section"
citation: "49 C.F.R. § 192.315"
title: "49"
number: "192.315"
heading: "Wrinkle bends in steel pipe."
url: "https://uscodex.org/cfr/49/192.315"
---

# §192.315. Wrinkle bends in steel pipe.

- (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.
- (b) Each wrinkle bend on steel pipe must comply with the following:
  - (1) The bend must not have any sharp kinks.
  - (2) When measured along the crotch of the bend, the wrinkles must be a distance of at least one pipe diameter.
  - (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.
  - (4) On pipe containing a longitudinal weld the longitudinal seam must be as near as practicable to the neutral axis of the bend.

## Notes

### Amendments

[35 FR 13257, Aug. 19, 1970, as amended by Amdt. 192-85, 63 FR 37503, July 13, 1998]

### Authority

Authority: 30 U.S.C. 185(w)(3), 49 U.S.C. 5103, 60101 et. seq., and 49 CFR 1.97.

### Source

Source: 35 FR 13257, Aug. 19, 1970, unless otherwise noted.

### Amendments

[35 FR 13257, Aug. 19, 1970, as amended by Amdt. 192-85, 63 FR 37503, July 13, 1998]