本标准涵盖管道对准和二次支撑系统，并规定了材料、物理特性、性能测试和标记的要求。本标准涵盖的管道定线和二次支撑系统适用于:住宅和商业应用；以及地面和地下设施。本标准的要求并不旨在阻止使用替代材料或施工方法，前提是此类替代材料或施工方法符合本标准的意图和要求。 本标准的修订提案将按照IAPMO的标准编写程序进行处理。用户应注意遵守本标准可能需要使用专利权涵盖的发明的可能性。通过发布本标准，对任何此类权利要求或与之相关的任何专利权的有效性不采取任何立场。如果专利持有人已经提交了一份声明，表示愿意按照合理且非歧视性的条款和条件向希望获得此类许可的申请人授予这些权利项下的许可，则可以从IAPMO获得详细信息。

This Standard covers pipe alignment and secondary support systems and specifies requirements for materials, physical characteristics, performance testing, and markings.Pipe alignment and secondary support systems covered by this Standard are intended for:residential and commercial applications; andabove-ground and buried installations.The requirements of this Standard are not intended to prevent the use of alternative materials or methods of construction provided such alternatives meet the intent and requirements of this Standard.Proposals for amendments to this Standard will be processed in accordance with the standards writing procedures of IAPMO.The user's attention is called to the possibility that compliance with this Standard may require use of an invention covered by patent rights. By publication of this Standard, no position is taken with respect to the validity of any such claim(s) or of any patent rights in connection therewith. If a patent holder has filed a statement of willingness to grant a license under these rights on reasonable and nondiscriminatory terms and conditions to applicants desiring to obtain such a license, then details can be obtained from IAPMO.