1、Designation: C 585 09Standard Practice forInner and Outer Diameters of Thermal Insulation forNominal Sizes of Pipe and Tubing1This standard is issued under the fixed designation C 585; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision
2、, 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
3、.1.2 This practice covers insulation supplied in cylindricalsections and lists recommended single layer inner and outerdiameters of insulation having nominal wall thicknesses from12 to 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
4、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 d
5、etermine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C 168 Terminology Relating to Thermal InsulationC 302 Test Method for Density and Dimensions of Pre-formed Pipe-Covering-Type Thermal Insulation3. Terminology3.1 DefinitionsDefinitions pertain
6、ing to insulation are de-fined in Terminology C 168.4. 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 thic
7、knesses 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 diffe
8、rent tolerances. While the product will fit thepipe, it is possible that it will not readily nest as the outer layerbetween the different materials, or with a different manufac-turer, and possibly the same manufacturer. Exercise care todetermine these differences before specifying or orderingnesting
9、 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, distribu-tor, or fabricator.4.4 Dimensions in accordance with t
10、his 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
11、 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 theoute
12、r 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
13、 andperlite preformed pipe and tubing insulation identified by Table3a, Table 4a, Table 5a, and Table 6a.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 edi
14、tion approved April 1, 2009. Published May 2009. Originallyapproved in 1966 to replace C 312 and C 521. Last previous edition approved in2004 as C 585 90 (2004).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book o
15、f ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Fig. 1a Three Meaurement LocationsFig. 1b Diameter and Half-Diameter Measurement Loca
16、tionsFIG. 1 Inner Diameter Measurement LocationFig. 2a Three Measurement LocationsFig. 2b Diameter and Half-Diameter Measurement LocationsFIG. 2 Outer Diameter Measurement LocationFIG. 3 Hinged Section Measurement LocationC5850925.4 This practice provides for a range of pipe and tubingsizes the oute
17、r diameters tolerances for cellular foam plastics,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 cellularpre
18、formed pipe and tubing insulation identified by Table 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 cellular preformed pipe and tubing insulationidentified by Table 7a, Table 8a, Table 9
19、a, and Table 10a.6. Procedure6.1 Measurement:6.1.1 Measurement of inner and outer diameters shall bemade to the nearest132 in. (0.8 mm) using a steel tape or rule.6.1.1.1 Uneven Insulation Inner addthe applicable plus (+) outer diameter tolerance and twice the thickness ofthe jacketing to the insula
20、tion outer diameter number; multiply the addedtotal times p (3.14159) to arrive at the maximum circumference; add thenecessary longitudinal over lap dimension to the maximum circumfer-ence; and the calculated answer will be the stretch-out requirement forcutting the outer jacketing to be applied ove
21、r / around the pipe or tubinginsulations OD.7. Keywords7.1 pipe thermal insulation diameter; pipe thermal insula-tion dimension; thermal insulating materials-pipe; thermalinsulating materials-tubing; thermal insulation; tubing thermalinsulation diameter; tubing thermal insulation dimensionC585093TABLE 1 Nominal Pipe Sizes with Inner Diameters or through the ASTM website(www.astm.org).C5850911
