1.1 本规程涵盖了三类硬木和软木构件的质量要求，不包括用于建造箱子、板条箱、托盘以及垫块和支撑的人造或预制木复合材料。 1.2 以英寸-磅为单位的数值应视为标准值。括号中给出的国际单位仅供参考。 1.3 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。 1.4 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。 ====意义和用途====== 4.1 每个木质构件都包含影响其所用容器或托盘性能的特征组合。由于这些特性与集装箱和托盘结构中构件的功能应用以及可能要求集装箱或托盘执行的服务有关，因此确定了本文规定的类别要求。 4.2 特定容器或托盘结构或使用特有的任何其他规定要求或限制，例如禁止打结或松结以提供筛分防护，限制某些木材组或种类，或为集装箱或托盘的特定构件或类型选择适用类别应由该集装箱或托盘的标准负责。

1.1 This practice covers the quality requirements for three classes of hardwood and soft-wood members, excluding man-made or fabricated wood composites, used in the construction of boxes, crates, pallets, and blocking and bracing. 1.2 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only. 1.3 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. 1.4 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 ====== 4.1 Each wood member contains a combination of characteristics which affects the performance of the container or pallet in which it is used. The requirements for classes, herein specified, have been established as these characteristics are related to the functional application of members in container and pallet construction and to the service that the container or pallet may be called upon to perform. 4.2 Any other specified requirements or limitations peculiar to a particular container or pallet construction or use, such as prohibiting knotholes or loose knots to provide siftproofness, limitation to certain wood groups or species, or the selection of applicable classes for specific members of or types of containers or pallet shall be the responsibility of the standard for that container or pallet.