ASTM C302-95(2001)e1
(Test Method)Standard Test Method for Density and Dimensions of Preformed Pipe-Covering-Type Thermal Insulation
Standard Test Method for Density and Dimensions of Preformed Pipe-Covering-Type Thermal Insulation
SCOPE
1.1 This test method covers the determination of the dimensions and density, after conditioning, of preformed pipe insulation.
1.1.1 Procedure 1 is applicable to sections of one-piece pipe covering or to sections of segmental pipe covering that can be joined together concentrically and measured as one-piece.
1.1.2 Procedure 2 is applicable to segmental pipe covering where each section of material is measured.
1.1.3 Procedure 3 is applicable to sections of one-piece pipe covering, such as soft foam or mineral wool materials, where it is possible to penetrate the material.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.
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e1
Designation:C302–95 (Reapproved 2001)
Standard Test Method for
Density and Dimensions of Preformed Pipe-Covering-Type
Thermal Insulation
This standard is issued under the fixed designation C 302; 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 (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Section 10.1.2 was editorially revised in October 2001.
1. Scope Determine the Precision of a Test Method
1.1 This test method covers the determination of the dimen-
3. Terminology
sions and density, after conditioning, of preformed pipe insu-
3.1 Definitions—See Terminology C 168.
lation.
1.1.1 Procedure 1 is applicable to sections of one-piece pipe
4. Summary of Test Method
covering or to sections of segmental pipe covering that can be
4.1 The material to be tested is conditioned to constant
joined together concentrically and measured as one-piece.
weight.Thedensityofthepipeinsulationiscalculatedfromthe
1.1.2 Procedure 2 is applicable to segmental pipe covering
conditioned mass and measured dimensions.
where each section of material is measured.
1.1.3 Procedure 3 is applicable to sections of one-piece pipe
5. Significance and Use
covering, such as soft foam or mineral wool materials, where
5.1 Density measurements of preformed pipe insulation are
it is possible to penetrate the material.
useful in determining compliance of a product with specifica-
1.2 The values stated in inch-pound units are to be regarded
tion limits and in providing a relative gage of product weights.
as the standard. The values given in parentheses are for
For any one kind of insulation some important physical and
information only.
mechanical properties, such as thermal conductivity, heat
1.3 This standard does not purport to address all of the
capacity, strength, etc., bear a specific relationship with its
safety concerns, if any, associated with its use. It is the
density; however, on a density basis, these properties are not
responsibility of the user of this standard to establish appro-
directly comparable with those for other kinds of material.
priate safety and health practices and determine the applica-
5.2 The physical dimensions of preformed pipe insulation
bility of regulatory limitations prior to use.
are important quantities not only for determining the density of
the pipe insulation but also for determining the conformance to
2. Referenced Documents
specifications. The use of multilayer insulations is common,
2.1 ASTM Standards:
and the dimensions are necessary to ensure proper nesting of
C 167 Test Methods for Thickness and Density of Blanket
2 the layers.
or Batt Thermal Insulations
C 168 Terminology Relating to Thermal Insulating Materi-
6. Apparatus
als
6.1 Flexible Steel Rule, graduated in ⁄32-in. or 1.0-mm
C 670 Practice for Preparing Precision and Bias Statements
intervals.
for Test Methods for Construction Materials
6.2 Scale, with sufficient capacity to weigh the specimen to
C 870 Practice for Conditioning of Thermal Insulating Ma-
within 0.01 lb or 5 g.
terials
6.3 Pin Probe, as defined in Test Methods C 167.
E 691 Practice for Conducting an Interlaboratory Study to
6.4 Steel Rule, graduated in ⁄32-in. or 1.0-mm intervals.
6.5 Stainless Steel Shim Stock, 2 in. (75 mm) wide, longer
than the circumference of the pipe insulation, and 0.010 in.
(0.25 mm) thick.
This test method is under the jurisdiction ofASTM Committee C16 onThermal
Insulation and is the direct responsibility of Subcommittee C16.32 on Mechanical
6.6 Pi Tape, graduated to read a diameter directly to the
Properties.
nearest ⁄32 in. or 1.0 mm.
Current edition approved Aug. 15, 1995. Published October 1995. Originally
published as C 302 – 52 T. Last previous edition C 302 – 82 (Reapproved 1989)e .
Annual Book of ASTM Standards, Vol 04.06.
3 4
Annual Book of ASTM Standards, Vol 04.02. Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C302
6.7 Pieces of Pipe, on which to install the pipe insulation Subtract twice the thickness of the shim stock from the
under test (only required for Procedure 3). diametermeasuredandconvertthediametertoacircumference
by multiplying the average diameter by p.
7. Test Specimen 9.3.5 Measure the wall thickness at six locations, uniformly
spaced along the length of the specimen and uniformly spaced
7.1 The test specimen shall be of a commercial size.
around its surface, using the pin probe of 6.3, to the nearest ⁄32
7.2 If sectional pipe segments are to be used for Procedures
in. or 1.0 mm.
1 or 3, the sections shall be joined together to form a hollow
cylinder.
10. Calculations
8. Conditioning 10.1 Calculate the volume of the specimen using one of the
following equations:
8.1 Remove any jacket on the specimen unless it is of a type
10.1.1 Procedures 1 and 3:
that would cause disintegration of the specimen upon removal.
8.2 Condition the specimen to constant mass in accordance
V 5 Lt~C2p t!/1728 (1)
with Practice C 870.
where:
V = volume of the specimen, ft ,
9. Procedures
L = average length of the specimen, in.,
9.1 Procedure 1—One-Piece Pipe Section:
t = average thickness of the specimen, in., and
9.1.1 Weigh the conditioned pipe section to the nearest 0.01
C = average circumference of the specimen, in.
lb or 5 g.
or
9.1.2 Measure the length of the specimen in six locations,
V 5 Lt~C2pt! 3 10 (2)
uniformly spaced around its circumference, to the nearest ⁄32
in. or 1.0 mm.
where:
9.1.3 Measure the circumference of the speci
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