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适用范围：<p id="s00002">1.1 This specification covers flexible, pre-insulated piping commonly used to convey hot and cold fluids.</p> <p id="s00003">1.2 This specification establishes materials and performance requirements for flexible, pre-insulated piping intended for hot and chilled water applications.</p> <p id="s00004">1.3 Piping systems may include one or more carrier pipes within a common outer jacket.</p> <p id="s00005">1.4 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered part of this standard.</p> <p id="s00006">1.5 <span class="italic"><span class="italic">Units</span>8212;</span>The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.</p> <p id="s00007">1.6 <span class="italic"><span class="med">The following safety hazards caveat pertains to the test methods portion, Section 7, of this specification. </span>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 requirements prior to use.</span>