46 CFR § 56.30-30 - Brazed joints.

---
identifier: "/us/cfr/t46/s56.30-30"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "46 CFR § 56.30-30 - Brazed joints."
title_number: 46
title_name: "Shipping"
section_number: "56.30-30"
section_name: "Brazed joints."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "F"
subchapter_name: "MARINE ENGINEERING"
part_number: "56"
part_name: "PIPING SYSTEMS AND APPURTENANCES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1321(j), 1509; 43 U.S.C. 1333; 46 U.S.C. 3306, 3703; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; E.O. 12777, 56 FR 54757, 3 CFR, 1991 Comp., p. 351; DHS Delegation No. 00170.1, Revision No. 01.4."
regulatory_source: "CGFR 68-82, 33 FR 18843, Dec. 18, 1968, unless otherwise noted."
cfr_part: "56"
---


# 56.30-30 Brazed joints.

(a) *General (refer also to subpart 56.75).* The minimum socket depth must be sufficient for the intended service. Brazing alloy must either be end-fed into the socket or must be provided in the form of a preinserted ring in a groove in the socket. The brazing alloy must be sufficient to fill completely the annular clearance between the socket and the pipe or tube.

(b) *Limitations.* (1) Brazed socket-type joints must not be used on systems containing flammable or combustible fluids in areas where fire hazards are involved or where the service temperature exceeds 425 °F. Higher temperature service must be approved by the Commandant.

(2) Brazed joints depending solely upon a fillet, rather than primarily upon brazing material between the pipe and socket are not acceptable.

[CGFR 68-82, 33 FR 18843, Dec. 18, 1968, as amended by USCG-2003-16630, 73 FR 65178, Oct. 31, 2008]