1、Designation: C450 17Standard Practice forFabrication of Thermal Insulating Fitting Covers for NPSPiping, and Vessel Lagging1This standard is issued under the fixed designation C450; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, t
2、he 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 provides tables of dimensions of pre-formed insulation that shall be used in fabricating insu
3、lationcovers for use on valves, ells, tees, flanges, and vessels in thepressure range from 150 to 1500 psi (1 to 10 MPa). Thesetables, which are part of this standard, are published separatelyas the ASTM Recommended Dimensional Standards for Fab-rication of Thermal Insulation Fitting Covers for NPS
4、Pipingand Vessel Lagging. The tables were developed to providedimensions for shop fabrication use in forming pipe insulationfitting covers on NPS pipe operating at high temperature andlow temperature. The tables also include dimensions for use informing thermal insulation into curved segments, and l
5、agging,for application on vessels. This practice does not apply toreflective-type insulation, insulation on screwed elbows, ShortRadius (SR) thermal insulating materials; thermal in-sulating materialsfabrication; thermal insulating materialsfittings; thermal insulating materialspipeC450 173FIG.1Shor
6、tRadiusEllsRecommendedDimensionalStandardsC450 174FIG.1ShortRadiusEllsRecommendedDimensionalStandards(continued)C450 175FIG.1ShortRadiusEllsRecommendedDimensionalStandards(continued)C450 176FIG.2LongRadiusEllsRecommendedDimensionalStandardsC450 177FIG.2LongRadiusEllsRecommendedDimensionalStandards(c
7、ontinued)C450 178FIG.2LongRadiusEllsRecommendedDimensionalStandards(continued)C450 179ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of t
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