ASTM_C_585_-_10_2016.pdf

Designation:C58510(Reapproved 2016)Standard Practice forInner and Outer Diameters of Thermal Insulation forNominal Sizes of Pipe and Tubing1This standard is issued under the fixed designation C585;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year 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 practice is intended as a dimensional standard forpreformed thermal insulation for pipes and tubing.1.2 This practice covers insulation supplied in cylindricalsections and lists recommended single layer inner and outerdiameters of insulation having nominal wall thicknesses from12to 5 in.(13 to 127 mm)to fit over standard sizes of pipe andtubing.1.3 The values stated in inch-pound units are to be regardedas the standard.The values stated in SI units are provided forinformation only.1.4 This standard does not purport to address the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C168 Terminology Relating to Thermal InsulationC302 Test Method for Density and Dimensions of Pre-formed Pipe-Covering-Type Thermal Insulation3.Terminology3.1 DefinitionsDefinitions pertaining to insulation are de-fined in Terminology C168.4.Significance and Use4.1 The purpose of this practice is to ensure satisfactory fiton standard sizes,to accommodate radial expansion of pipesand tubes which are heated after being insulated,and tominimize the number of insulation sizes and thicknesses to bemanufactured and stocked.4.2 While it is possible to manufacturer insulation to theserecommended dimensions,exercise care in attempting to nestlayers of different materials,or layers supplied by differentmanufacturers.Individual manufacturing processes will oper-ate at slightly different tolerances.While the product will fit thepipe,it is possible that it will not readily nest as the outer layerbetweenthedifferentmaterials,orwithadifferentmanufacturer,and possibly the same manufacturer.Exercisecare to determine these differences before specifying or order-ing nesting sizes.4.3 The wide range of outer diameter dimensional toler-ances will prevent many pipe and tube insulations from nestingfor staggered joints or double layered applications,or bothunless specified when ordered from the manufacturer,distributor,or fabricator.4.4 Dimensions in accordance with this practice do notnecessarily permit application of one thickness of pipe insula-tion over another(Nesting or Simplified Dimensional System)to obtain total thicknesses greater than those manufactured assingle layer,or for multilayer application when desired.5.Summary of Practice5.1 This practice provides for each pipe and tubing sizes theinner diameters with tolerances for calcium silicate,cellularfoam plastics,cellular glass,mineral fiber,and perlite pre-formed pipe and tubing insulation identified by Table 1 andTable 2.5.2 This practice provides for each pipe and tubing sizes theouter diameters for calcium silicate,cellular foam plastics,cellular glass,mineral fiber,and perlite preformed pipe andtubing insulation identified by Table 3,Table 4,Table 5 andTable 6.5.3 This practice provides for a range of pipe and tubingsizes the outer diameter tolerances for calcium silicate andperlite preformed pipe and tubing insulation identified by Table3a,Table 4a,Table 5a,and Table 6a.5.4 This practice provides for a range of pipe and tubingsizes the outer diameters tolerances for cellular foam plastics,1This practice is under the jurisdiction of ASTM Committee C16 on ThermalInsulation and is the direct responsibility of Subcommittee C16.20 on HomogeneousInorganic Thermal Insulations.Current edition approved May 1,2016.Published May 2016.Originallyapproved in 1966 to replace C312 and C521.Last previous edition approved in 2010as C585 10.DOI:10.1520/C0585-10R16.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 cellular glass,and mineral fiber,preformed pipe and tubinginsulations identified by Table 3b,Table 4b,Table 5b and Table6b.5.5 This practice provides for each pipe and tubing sizes theinner and outer diameters for flexible elastomeric cellular andpolyolefin preformed pipe and tubing insulation identified byTable 7,Table 8,Table 9,and Table 10.5.6 This practice provides for a range of pipe and tubingsizes the inner and outer diameter tolerances for flexibleelastomeric and polyolefin cellular preformed pip