1.1 本规范规定了由锻焊铜管和铜合金管制成的直管段热交换器管的要求，其外表面或内表面或两者均已通过冷成型工艺进行了修改，以产生整体增强表面，以改善传热。 1.2 这些管子通常用于表面冷凝器、蒸发器和热交换器。 1.3 产品应由订购信息中规定的以下铜或铜合金制成。 铜或铜合金 UNS编号。 金属类型 C12000 A. DLP磷化，低残留磷 C12200 A. DHP磷化，高残留磷 C19200 磷化，1 % 铁 C19400元 铜铁合金 C23000 红黄铜 C44300 海军部，军火库 C44400 海军部，锑 C44500 海军部，磷化 C68700 铝黄铜 C70400 95-5铜镍 C70600 90-10铜镍 C70620 90-10铜镍（改性用于焊接） C71000 80-20铜镍 C71500 70-30铜镍 C71520 70-30铜镍（改性用于焊接） C72200 铜镍合金 注1: 分类中列出的名称 B224页 . 1.4 单位- 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.5 以下安全危险警告仅适用于本规范中所述的试验方法。 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 警告- 许多监管机构已将汞指定为一种危险物质，可导致严重的医疗问题。汞或其蒸汽已被证明对健康有害，并对材料具有腐蚀性。处理汞和含汞产品时要小心。有关更多信息，请参阅适用的产品安全数据表（SDS）。当地或国家法律禁止销售汞或含汞产品，或两者兼有。用户必须确定其所在地销售的合法性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification establishes the requirements for heat exchanger tubes manufactured from forge-welded copper and copper alloy tubing in straight lengths on which the external or internal surface, or both, has been modified by cold forming process to produce an integral enhanced surface for improved heat transfer. 1.2 The tubes are typically used in surface condensers, evaporators, and heat exchangers. 1.3 The product shall be produced of the following coppers or copper alloys, as specified in the ordering information. Copper or Copper Alloy UNS No. Type of Metal C12000 A DLP Phosphorized, low residual phosphorus C12200 A DHP Phosphorized, high residual phosphorus C19200 Phosphorized, 1 % iron C19400 Copper-Iron Alloy C23000 Red Brass C44300 Admiralty, arsenical C44400 Admiralty, antimonial C44500 Admiralty, phosphorized C68700 Aluminum Brass C70400 95-5 Copper-Nickel C70600 90-10 Copper-Nickel C70620 90-10 Copper-Nickel (Modified for Welding) C71000 80-20 Copper-Nickel C71500 70-30 Copper-Nickel C71520 70-30 Copper-Nickel (Modified for Welding) C72200 Copper-Nickel Note 1: Designations listed in Classification B224 . 1.4 Units— 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. 1.5 The following safety hazard caveat pertains only to the test methods described in this specification. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 Warning— Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.