1.1 本规程涵盖了消费者蹦床材料（CTM）的制造质量控制，描述了测试类型、正确的测试方法、最低测试频率和采样最佳实践。 1.2 本规程旨在帮助CTM的制造商、供应商、采购商、安装商和最终用户确定维持质量控制的最低努力水平。 1.3 本规程不涉及制造质量保证、产品验收测试或一致性测试。这些是CTM制造商以外的组织开展的独立活动。 1.4 本规程涵盖了用于制造质量控制（MQC）的CTM取样程序。 这些程序旨在确保获得正确数量的代表性样品，并由制造商正确报告。 1.5 以国际单位制表示的值应被视为标准。括号中给出的值仅供参考。 1.6 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 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====== 4.1 CTM必须以符合CTM制造商对最终产品进行内部测试所确定的最低质量控制水平的方式正确制造。本规程建议了测试类型、测试方法和最低测试频率。 4.2 应该清楚地认识到，CTM制造商可能会进行额外的测试，或者比本实践中要求的频率更高，或者两者兼而有之。在这种情况下，CTM制造商的质量控制计划将优先于这种做法。引用的测试和测试方法 表1 必须出现在质量控制计划和质量控制报告中。 4.3 还应认识到，CTM的购买者和安装者可能需要额外的测试或比本实践中要求的更高的频率，或两者兼而有之。 制定此类项目特定规范或质量保证计划的组织应认识到，这些要求超出了当前的实践状态。如果买方或安装商提出此类要求，他们应在合同决定期间向CTM制造商或供应商明确传达要求，以便以后不会出现争议。 4.4 这种做法提供了一种方法，可以选择CTM样本，为选择试样提供统计上有效的样本，而无需事先了解生产单元之间可能存在的可变性。 4.5 实践中阐述的原则 D4271 ，该实践中的说明性文本可供测试方法作者在准备采样声明时使用。

1.1 This practice covers the manufacturing quality control of Consumer Trampoline-Bed Material (CTM), describing types of tests, the proper test methods, minimum testing frequencies, and best practices for sampling. 1.2 This practice is intended to aid manufacturers, suppliers, purchasers, installers, and end users of CTM in establishing a minimum level of effort for maintaining quality control. 1.3 This practice does not address manufacturing quality assurance, product acceptance testing, or conformance testing. These are independent activities taken by organizations other than the CTM manufacturer. 1.4 This practice covers procedures for sampling CTM for the purpose of manufacturing quality control (MQC). These procedures are designed to ensure the correct number of representative samples are obtained and properly reported by the manufacturer. 1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.6 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. 1.7 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. ====== Significance And Use ====== 4.1 CTM must be properly manufactured in a manner consistent with a minimum level of quality control as determined by in-house testing of the final product by the CTM manufacturer. This practice suggests types of tests, the methods of the testing and the minimum testing frequencies. 4.2 It should be clearly recognized that CTM manufacturers may perform additional tests or at a greater frequency than required in this practice, or both. In this case the CTM manufacturer’s quality control plan will take precedence over this practice. The quoted tests and test methods in Table 1 must appear in the QC plan and QC report. 4.3 It should also be recognized that purchasers and installers of CTM may require additional tests or a greater frequency than called for in this practice or both. The organization(s) producing such project specific specification or quality assurance plan should recognize that such requirements are beyond the current state of the practice. If such a request is made by the purchasers or installers, they should clearly communicate the requirements to the CTM manufacturer or supplier during the contract decisions in order that disputes do not arise at a subsequent time. 4.4 This practice provides a means by which samples of CTM may be selected to provide a statistically valid sample for selection of test specimens without previous knowledge of the variability that may exist between production units. 4.5 The principles stated in Practice D4271 , and the illustrative text in that practice can be used by the test method authors in preparing sampling statements.