ASTM C450-17
(Practice)Standard Practice for Fabrication of Thermal Insulating Fitting Covers for NPS Piping, and Vessel Lagging
Standard Practice for Fabrication of Thermal Insulating Fitting Covers for NPS Piping, and Vessel Lagging
SIGNIFICANCE AND USE
4.1 This system of dimensions provides a guide for forming thermal insulation in advance of field application. Forming is done by cutting, grinding, milling, or molding, depending upon the method most suitable for the thermal insulation being fabricated. It is equally applicable for all service temperature ranges.
SCOPE
1.1 This practice provides tables of dimensions of preformed insulation that shall be used in fabricating insulation covers for use on valves, ells, tees, flanges, and vessels in the pressure range from 150 to 1500 psi (1 to 10 MPa). These tables, which are part of this standard, are published separately as the ASTM Recommended Dimensional Standards for Fabrication of Thermal Insulation Fitting Covers for NPS Piping and Vessel Lagging. The tables were developed to provide dimensions for shop fabrication use in forming pipe insulation fitting covers on NPS pipe operating at high temperature and low temperature. The tables also include dimensions for use in forming thermal insulation into curved segments, and lagging, for application on vessels. This practice does not apply to reflective-type insulation, insulation on screwed elbows, Short Radius (SR) & Long Radius (LR) Elbows Fitting Covers for tubing, dutchman (extended leg) insulation fitting covers, double-layered staggered-joint pipe insulation fitting covers, flexible preformed pipe-tube elastomeric foam fitting covers in accordance with Specification C534/C534M or polyolefin foam fitting covers in accordance with Specification C1427.
1.1.1 Refer to Guide C1710 when referring to insulation materials for fabrication of preformed flexible closed cell insulated 90° elbows, tees, or similar products.
1.2 This practice does not specify fabrication methods. Thermal insulation for fitting covers is formed by numerous fabrication methods. In general, insulations are cut by circular or band saws, shaped by grinders or millers, or molded/preformed. Each method has certain advantages and disadvantages, depending upon the material to be formed, number of cuts required, material waste permissible, and quantity of fittings being produced. Fitting parts are assembled using adhesives and fabrication cements applied using dip pots, rollers, doctor blades, brush, or trowel, depending upon the materials being used. Any specification of the fabrication techniques is beyond the scope of this standard.
1.3 The values stated in inch-pound units are to be regarded as standard. In a few parts of this practice, the values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. The dimensional standard tables with fractional inch-pound (I.P.) system provided from the adjunct and in this document’s tables are currently not available in decimal and metric equivalents.
1.4 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.
1.5 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.
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Designation: C450 − 17
Standard Practice for
Fabrication of Thermal Insulating Fitting Covers for NPS
1
Piping, and Vessel Lagging
This standard is issued under the fixed designation C450; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope materials being used. Any specification of the fabrication
techniques is beyond the scope of this standard.
1.1 This practice provides tables of dimensions of pre-
formed insulation that shall be used in fabricating insulation 1.3 The values stated in inch-pound units are to be regarded
covers for use on valves, ells, tees, flanges, and vessels in the as standard. In a few parts of this practice, the values given in
pressure range from 150 to 1500 psi (1 to 10 MPa). These parentheses are mathematical conversions to SI units that are
tables, which are part of this standard, are published separately provided for information only and are not considered standard.
as the ASTM Recommended Dimensional Standards for Fab- The dimensional standard tables with fractional inch-pound
rication of Thermal Insulation Fitting Covers for NPS Piping (I.P.) system provided from the adjunct and in this document’s
and Vessel Lagging. The tables were developed to provide tables are currently not available in decimal and metric
dimensions for shop fabrication use in forming pipe insulation equivalents.
fitting covers on NPS pipe operating at high temperature and
1.4 This standard does not purport to address all of the
low temperature. The tables also include dimensions for use in
safety concerns, if any, associated with its use. It is the
forming thermal insulation into curved segments, and lagging,
responsibility of the user of this standard to establish appro-
for application on vessels. This practice does not apply to
priate safety, health, and environmental practices and deter-
reflective-type insulation, insulation on screwed elbows, Short
mine the applicability of regulatory limitations prior to use.
Radius (SR) & Long Radius (LR) Elbows Fitting Covers for
1.5 This international standard was developed in accor-
tubing, dutchman (extended leg) insulation fitting covers,
dance with internationally recognized principles on standard-
double-layered staggered-joint pipe insulation fitting covers,
ization established in the Decision on Principles for the
flexible preformed pipe-tube elastomeric foam fitting covers in
Development of International Standards, Guides and Recom-
accordance with Specification C534/C534M or polyolefin
mendations issued by the World Trade Organization Technical
foam fitting covers in accordance with Specification C1427.
Barriers to Trade (TBT) Committee.
1.1.1 Refer to Guide C1710 when referring to insulation
materials for fabrication of preformed flexible closed cell
2. Referenced Documents
insulated 90° elbows, tees, or similar products.
2
2.1 ASTM Standards:
1.2 This practice does not specify fabrication methods.
C168 Terminology Relating to Thermal Insulation
Thermal insulation for fitting covers is formed by numerous
C534/C534M Specification for Preformed Flexible Elasto-
fabrication methods. In general, insulations are cut by circular
meric Cellular Thermal Insulation in Sheet and Tubular
or band saws, shaped by grinders or millers, or molded/
Form
preformed. Each method has certain advantages and
C585 Practice for Inner and Outer Diameters of Thermal
disadvantages, depending upon the material to be formed,
Insulation for Nominal Sizes of Pipe and Tubing
number of cuts required, material waste permissible, and
C1427 Specification for Extruded Preformed Flexible Cel-
quantity of fittings being produced. Fitting parts are assembled
lular Polyolefin Thermal Insulation in Sheet and Tubular
usingadhesivesandfabricationcementsappliedusingdippots,
Form
rollers, doctor blades, brush, or trowel, depending upon the
C1710 Guide for Installation of Flexible Closed Cell Pre-
formed Insulation in Tube and Sheet Form
1
This practice is under the jurisdiction of ASTM Committee C16 on Thermal
InsulationandisthedirectresponsibilityofSubcommitteeC16.20onHomogeneous
2
Inorganic Thermal Insulations. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Nov. 1, 2017. Published December 2017. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1960. Last previous edition approved in 2014 as C450 – 08 (2014). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/C0450-17. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Cons
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C450 − 08 (Reapproved 2014) C450 − 17
Standard Practice for
Fabrication of Thermal Insulating Fitting Covers for NPS
1
Piping, and Vessel Lagging
This standard is issued under the fixed designation C450; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This practice provides tables of dimensions of preformed insulation that shall be used in fabricating insulation covers for
use on valves, ells, tees, flanges, and vessels in the pressure range from 150 to 1500 psi (1 to 10 MPa). These tables, which are
part of this standard, are published separately as the ASTM Recommended Dimensional Standards for Fabrication of Thermal
Insulation Fitting Covers for NPS Piping,Piping and Vessel Lagging. The tables were developed to provide dimensions for shop
fabrication use in forming pipe insulation fitting covers foron NPS pipe operating at high temperature and low temperature. The
tables also include dimensions for use in forming thermal insulation into curved segments, and lagging, for application on vessels.
This practice does not apply to reflective-type insulation.insulation, insulation on screwed elbows, Short Radius (SR) & Long
Radius (LR) Elbows Fitting Covers for tubing, dutchman (extended leg) insulation fitting covers, double-layered staggered-joint
pipe insulation fitting covers, flexible preformed pipe-tube elastomeric foam fitting covers in accordance with Specification
C534/C534M or polyolefin foam fitting covers in accordance with Specification C1427.
1.1.1 Refer to Guide C1710 when referring to insulation materials for fabrication of preformed flexible closed cell insulated 90°
elbows, tees, or similar products.
1.2 This practice does not specify fabrication methods. Thermal insulation for fitting covers is formed by numerous fabrication
methods. In general, insulations are cut by circular or band saws, shaped by grinders or millers, or molded.molded/preformed. Each
method has certain advantages and disadvantages, depending upon the material to be formed, number of cuts required, material
waste permissible, and quantity of fittings being produced. Fitting parts are assembled using adhesives and fabrication cements
applied using dip pots, rollers, doctor blades, brush, or trowel, depending upon the materials being used. Any specification of the
fabrication techniques is beyond the scope of this standard.
1.3 The values stated in inch-pound units are to be regarded as standard. The In a few parts of this practice, the values given
in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
The dimensional standard tables with fractional inch-pound (I.P.) system provided from the adjunct and in this document’s tables
are currently not available in decimal and metric equivalents.
1.4 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.5 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C168 Terminology Relating to Thermal Insulation
C534/C534M Specification for Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular Form
C585 Practice for Inner and Outer Diameters of Thermal Insulation for Nominal Sizes of Pipe and Tubing
C1427 Specification for Extruded Preformed Flexible Cellular Polyolefin Thermal Insulation in Sheet and Tubular Form
1
This practice is under the jurisdiction of ASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.20 on Homogeneous
Inorganic Thermal Insulations.
Current edition approved April 1, 2014Nov. 1, 2017. Published April 2014December 2017. Originally approved in 1960. Last previous edition approved in 20082014 as
C450 – 08.C450 – 08 (2014). DOI: 10.1520/C0450-08R14.10.1520/C0450-17.
2
For referenc
...
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