1.1 本规范仅涵盖工厂制造的锻铝和铝合金焊接配件，与现场制造的配件不同。术语“焊接配件”适用于对焊或承插端部零件，例如45°弯头、180°回流弯头、90°短半径弯头以及按照ASME B16.9和B16.11规定的尺寸标准制造的其他类型。 注1: 在本规范中，术语的使用 合金 一般来说，包括铝以及铝合金。 1.2 有关本规范中包含新铝和铝合金的验收标准，请参阅 附件A1 . 1.3 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。 1.4 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和治疗措施，并确定监管限制的适用性。

1.1 This specification covers only factory-made wrought aluminum and aluminum-alloy welding fittings in contrast to field-made fittings. The term “welding fittings” applies to butt-welding or socket-end parts, such as 45° elbows, 180° return bends, 90° short radius elbows, and other types made to the dimensional standards specified by ASME B16.9 and B16.11. Note 1: Throughout this specification use of the term alloy in the general sense includes aluminum as well as aluminum-alloy. 1.2 For acceptance criteria for inclusion of new aluminum and aluminum alloys in this specification, see Annex A1 . 1.3 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. 1.4 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 heal practices and determine the applicability of regulatory limitations prior to use.