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1.1 This practice describes expanded welded and silver brazed socket joints for use on shipboard piping systems.
1.2 Expanded welded and silver brazed socket joints are to be used to join two pipes or tubes having the same NPS (see Note) without using a fitting or butt weld.
1.3 Brazed socket type joints are not intended for use on systems containing flammable or combustible fluids in areas where fire hazards exist or where the service temperature exceeds 425°F (205°C).
1.4 Brazed joints depending solely upon a fillet weld rather than primarily upon brazing material between pipe/ tube and socket, are not covered by this practice.Note-The dimensionless designator nominal pipe size (NPS) has been substituted in this practice for such traditional terms as "nominal diameter," "size," and "nominal size, and "iron pipe size."
1.5 The values stated in inch-pound units are to be regarded as the standard.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
NAVSEA Document0900-LP-001-7000 Fabrication and Inspection of Brazed Piping Systems
Federal StandardTitle46 Code of Federal Regulations
A312/A312M Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
B75 Specification for Seamless Copper Tube
B88 Specification for Seamless Copper Water Tube
B466/B466M Specification for Seamless Copper-Nickel Pipe and Tube
Military StandardsMIL-T-24107 Tube, Copper (Seamless)
ICS Number Code 23.040.60 (Flanges, couplings and joints)
UNSPSC Code 40170000(Pipe piping and pipe fittings)