This practice covers expanded welded and silver brazed socket joints for use on shipboard piping systems. Expanded welded and silver brazed socket joints are to be used to join two pipes or tubes having the same NPS (see ) without using a fitting or butt weld. 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 425F (205C). 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 1The dimensionless designator nominal pipe size (NPS) has been substituted in this practice for such traditional terms as "nominal diameter, " "size, " "nominal size, " and "iron pipe size." The values stated in inch-pound units are to be regarded as the standard. 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.
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