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Title 46

Displaying title 46, up to date as of 7/09/2026. Title 46 was last amended 6/30/2026.
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Title 46ShippingPart / Section
Chapter ICoast Guard, Department of Homeland Security1 – 199
Subchapter FMarine Engineering50 – 64
Part 56Piping Systems and Appurtenances56.01-1 – 56.97-40
Subpart 56.01General56.01-1 – 56.01-10
Subpart 56.04Piping Classification56.04-1 – 56.04-10
Subpart 56.07Design56.07-5 – 56.07-10
§ 56.07-5Definitions (modifies 100.2).
§ 56.07-10Design conditions and criteria (modifies 101-104.7).
Subpart 56.10Components56.10-1 – 56.10-5
§ 56.10-1Selection and limitations of piping components (replaces 105 through 108).
§ 56.10-5Pipe.
Subpart 56.15Fittings56.15-1 – 56.15-10
Subpart 56.20Valves56.20-1 – 56.20-20
Subpart 56.25Pipe Flanges, Blanks, Flange Facings, Gaskets, and Bolting56.25-5 – 56.25-20
Subpart 56.30Selection and Limitations of Piping Joints56.30-1 – 56.30-40
Subpart 56.35Expansion, Flexibility and Supports56.35-1 – 56.35-15
Subpart 56.50Design Requirements Pertaining to Specific Systems56.50-1 – 56.50-110
Subpart 56.60Materials56.60-1 – 56.60-25
Subpart 56.65Fabrication, Assembly, and Erection56.65-1
§ 56.65-1General (modifies 127 through 135).
Subpart 56.70Welding56.70-1 – 56.70-20
Subpart 56.75Brazing56.75-5 – 56.75-30
Subpart 56.80Bending and Forming56.80-5 – 56.80-15
Subpart 56.85Heat Treatment of Welds56.85-5 – 56.85-15
Subpart 56.90Assembly56.90-1 – 56.90-10
Subpart 56.95Inspection56.95-1 – 56.95-10
Subpart 56.97Pressure Tests56.97-1 – 56.97-40