1.1 This specification covers requirements and test methods for the characterization of polyamide 66 (PA66) compounds and pressure or non-pressure pipe for regulated or nonregulated oil- and gas-producing (gathering) applications to convey fluids such as oil, gas, multiphase fluids, and non-potable oilfield water. This specification does not cover pipe for regulated gas distribution or gas transmission applications. NOTE 1-This specification is intended for pipe in applications in which the pipe will experience 140F (60C) or lower temperatures and fluids with a pH of 5 or higher for service lifetimes typically ranging up to 20 years. Pipe users should contact the pipe manufacturer regarding the suitability of products under this specification for the specific end-use application. The chemical composition of the fluids generated in oil- and gas-gathering applications varies significantly. The pipe environment, transported fluids, and service loads can affect estimated piping system service lifetimes or design operating limits. Annex A2 provides requirements for establishing the fitness for purpose of PA66 compounds in relation to the long-term chemical exposure for a specific application. NOTE 2-Regulated gas gathering, distribution, and transmission lines are addressed in federal codes such as CFR 49 Part 192 (United States) or CSA Z662 (Canada). For regulated applications, waivers or special permits may be required by the authority having jurisdiction. 1.2 In-plant quality control programs are specified in Annex A1. Requirements for establishing the fitness for purpose of PA66 compounds are specified in Annex A2. Fusion-joining guidelines are addressed in Appendix X1. Design and installation considerations are discussed in Appendix X2. Moisture determination methods are provided in Appendix X3. 1.3 Heat fusion joining between PA66 pipe with PA 323 (PA-11) or PA 423 (PA-12) pipe, tubing, and fittings is not permitted. The fusion guidelines provided in Appendix X1 are intended for use exclusively with PA66 pipe manufactured in accordance with this specification. 1.4 The text of this specification references notes, footnotes, and appendixes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification. 1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The values given in parentheses are mathematical unit conversions that are provided for information only and are not considered standard. 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 and health practices and determine the applicability of regulatory limitations prior to use.
Keywordsline pipe; PA; PA66; oil and gas
The title and scope are in draft form and are under development within this ASTM Committee.Back to Top