# Welded branch connections.

- **operation:** document
- **citation:** 49 CFR 192.155
- **title:** Welded branch connections.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** Each welded branch connection made to pipe in the form of a single connection, or in a header or manifold as a series of connections, must be designed to ensure that the strength of the pipeline system is not reduced, taking into account the stresses in the remaining pipe wall due to the opening in 
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-192-155.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-192-155.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-192-155
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-192.155
**body:**

Each welded branch connection made to pipe in the form of a single connection, or in a header or manifold as a series of connections, must be designed to ensure that the strength of the pipeline system is not reduced, taking into account the stresses in the remaining pipe wall due to the opening in the pipe or header, the shear stresses produced by the pressure acting on the area of the branch opening, and any external loadings due to thermal movement, weight, and vibration.
- **truncated:** false
- **body characters:** 479