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 Remendations issued by the World Trade Organization Technical Barriers to Trade (TBT)Committee. Designation:F1733-20 An American National Standard INTERNATIONAL Standard Specification for Butt Heat Fusion Polyamide(PA)Plastic Fitting for Polyamide(PA)Plastic Pipe and Tubing' This standard is issued under the fixed designation F1733:the number immediately following the designation indicates the year of original adoption or in the case of revision the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon (s)indicates an editorial change since the last revision or reapproval. 1.Scope* D4066 Classification System for Nylon Injection and Extru- 1.1 This specification covers polyamide (PA)butt fusion sion Materials (PA) fittings for use with polyamide pipe (IPS and Metric)and D6779 Classification System for and Basis of Specification tubing (CTS).Included are requirements for materials for Polyamide Molding and Extrusi...