1.1 本规范规定了拟用作电导体的无缝铜母线管的要求。 1.1.1 产品应由以下铜制成，如订购信息所示: 2. 铜 UNS编号。 2. 先前 习惯于 任命 铜的类型 C10100 OFE 无氧，电子 C10200 的 无氧无残留脱氧剂 C10300 -- 无氧、超低磷 C10400、C10500， C10700 OFS 无氧，含银 C11000 ETP 电解坚韧沥青 C11300、C11400， C11600 STP 银轴承韧性沥青 2000年 DLP 磷化，低残留磷 1.2 除非另有规定，否则可提供上述任何一种铜。 1.3 单位-- 以英寸-磅为单位的数值应视为标准。 括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 18.1 为了确定是否符合下表中列出的特性要求的规定限值，应根据实践中的四舍五入方法对观测值或计算值进行四舍五进 E29 。 所有物 计算的舍入单位 或观测值 化学成分 数字右最后一位的最近单位 指定限度的 硬度 电阻率 数字右最后一位的最近单位 电导率 抗拉强度 最接近ksi（5 MPa） 伸长率:低于5 % 0.5的最接近倍数 % 5. % 等等 最接近的1 %

1.1 This specification establishes the requirements for seamless copper bus pipe and tube intended for use as electrical conductors. 1.1.1 The product shall be made from one of the following coppers, as denoted in the ordering information: 2 Copper UNS No. 2 Previously Used Designation Type of Copper C10100 OFE Oxygen-free, electronic C10200 OF Oxygen-free without residual deoxidants C10300 — Oxygen-free, extra low phosphorus C10400, C10500, C10700 OFS Oxygen-free, silver bearing C11000 ETP Electrolytic tough pitch C11300, C11400, C11600 STP Silver-bearing tough pitch C12000 DLP Phosphorized, low residual phosphorus 1.2 Unless otherwise specified, any one of the above coppers may be furnished. 1.3 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, which are provided for information only and are not considered standard. 1.4 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. ====== Significance And Use ====== 18.1 For purposes of determining compliance with the specified limits for requirements of the properties listed in the following table, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29 . Property Rounded Unit for Calculated or Observed Value Chemical composition nearest unit in the last right-hand place of figures of the specified limit Hardness Electrical resistivity nearest unit in the last right-hand place of figures Electrical conductivity Tensile strength nearest ksi (5 MPa) Elongation: below 5 % nearest multiple of 0.5 % 5 % and over nearest 1 %