【国外标准】 Standard Specification for Polyvinylidene Fluoride (PVDF) Corrosive Waste Drainage Systems

This specification covers requirements for polyvinylidene drainage systems for corrosive applications. Requirements for material, pipe and fittings are included. Polyvinylidene fluoride includes emulsion/suspension polymerization and copolymers of vinylidene fluoride/hexafluoropropylene produced by either method. These requirements apply to Schedule 40 and 80 IPS and SDR 21 pipe sizes. Pipe and fittings are to be joined by heat fusion or mechanical methods. The following tests shall be performed: chemical resistance; water absorption; joint tests – hydrostatic pressure tests; mechanical joint pullout test; threads; flattening; and impact resistance for PVDF pipe and fittings.1.1 This specification covers requirements for nonpressurepolyvinylidene fluoride drainage systems for corrosive applications. Requirements for material, pipe and fittings are included. Polyvinylidene fluoride includes emulsion/suspension polymerization and copolymers of vinylidene fluoride/hexafluoropropylene produced by either method.1.2 These requirements apply to Schedule 40 and 80 IPS, SDR 32.5, and SDR 21 pipe sizes. Pipe and fittings are to be joined by heat fusion or mechanical methods using the equipment supplied by the manufacturers.1.3 This specification is not intended to provide for interchangeability between plastic pipe and fittings from different manufacturers, but it does allow for transition fittings for joining one manufacturer's product to another's product, provided the joining technique used is other than heat fusion.1.4 This specification is not for polyvinylidene pressure systems.1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.6 Notes and appendixes are not a mandatory part of this specification.1.7 The following safety hazard caveat pertains only to the test method portion, Section 8, of this specification: 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.1.8 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.