1、Designation:F156301(Reapproved 2011)Standard Specification forTools to Squeeze-off Polyethylene(PE)Gas Pipe or Tubing1This standard is issued under the fixed designation F1563;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year
2、of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the physical requirements fortools used to squeeze-off polyethylene(PE)pipe and tubing.Itis li
3、mited to squeeze-off procedures set forth by the pipemanufacturer as referred to in Specification D2513 for gaspressure pipe systems.1.2 Nothing in this specification shall be construed asrecommending practices or systems at variances with govern-ing codes and project specifications.1.3 Where applic
4、able in this specification,“pipe”shallmean“pipe and tubing,”and“tool”shall mean“squeeze-offtool.”1.4 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considere
5、d standard.1.5 The following safety hazards caveat pertains only to thetest methods portions,Section 5 and Appendix X1 of thisspecification:This standard does not purport to address all ofthe safety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to estab
6、lish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D638 Test Method for Tensile Properties of PlasticsD1598 Test Method for Time-to-Failure of Plastic PipeUnder Constant Internal PressureD160
7、0 Terminology forAbbreviated Terms Relating to Plas-ticsD2513 Specification for Polyethylene(PE)Gas PressurePipe,Tubing,and FittingsF412 Terminology Relating to Plastic Piping SystemsF1041 Guide for Squeeze-Off of Polyolefin Gas PressurePipe and Tubing3.Terminology3.1 GeneralDefinitions are in accor
8、dance with Terminol-ogy F412,unless otherwise specified.Abbreviations are inaccordance with Terminology D1600,unless otherwise speci-fied.3.2 Definitions of Terms Specific to This Standard:3.2.1 squeeze-offa technique used to control the flow ofgas through a pipe by the compressing action of a mecha
9、nical,hydraulic or pneumatic device.Squeeze-off may be used,asrecommended by the tool or pipe manufacturer,to reduce theflow of gas to an acceptable rate.Under certain conditionscomplete stoppage of flow may be obtained.4.Materials and Manufacture4.1 Tools shall be manufactured from materials that h
10、avethe structural properties to meet the requirements of thisspecification.5.Other Requirements5.1 Force MechanismThe force mechanism(mechanical,hydraulic or pneumatic)shall provide a force of at least 1.25times the force required to squeeze-off the most rigid pipe sizewithin the squeeze parameters
11、recommended by the manufac-turer of the tool.The most rigid pipe is a function of pipediameter,wall thickness,pipe material and temperature.Thetool manufacturer determines which pipe products his tool issuitable for.Power tools such as impact wrenches or pneumaticmotored torque multipliers shall not
12、 be used.5.2 Tool StrengthA tool shall not be structurally damagedor functionally affected when tested as follows:5.2.1 Measure the load(P)required to squeeze-off the mostrigid pipe(largest size,thickest wall,highest density,lowesttemperature)within the range of the tool.5.2.2 Prepare a pipe specime
13、n from this pipe.The specimenlength shall be no less than five times the nominal outsidediameter of the pipe,but in no case less than 12 in.(305 mm).5.2.3 Insert the pipe specimen into the tool.Center thespecimen in the tool.5.2.4 Apply the largest load attainable by the force mecha-nism(without add
14、itional mechanical advantage)onto the1This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.60 on Gas.Current edition approved Aug.1,2011.Published November 2011.Originallyapproved in 1993.Last previous editio
15、n approved in 2007 as F1563-01(2007).DOI:10.1520/F1563-01R11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyr
16、ight ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 mechanical stops and then inspect.Any permanent damage ordeformation to the mechanical or hydraulic components iscause for rejection of the tool.5.2.5 Apply a load of 1.25 P(see 5.2.1)on the pipe fortwenty cycles.Acycle is:apply load,hold load for one minute,remove load.For each cycle,use a new unsqueezed area ofpipe,at least three pipe diameters from a previous squeeze.5.3 Release Protection
