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Significance and Use
This test method is applicable to distinguish between properly and improperly molded PVC plastic pipe fittings. It can be used to:
Determine whether cold slugs or unfused areas are present (Note 1),
Determine the amount of molded-in stress produced by the molding process (Note 2),
Reveal contamination, and
Show the quality of the weld line.
Note 1—A cold slug is a piece of material that enters the mold at a significantly lower temperature than the rest of the mass.
Note 2—A stress-free part will generally have better properties and higher strength than those with a high degree of stress. Stress-free parts will generally react better when exposed to chemicals.
1.1 This test method covers a procedure for evaluating the quality of molded poly(vinyl chloride) (PVC) plastic pipe fittings after exposure to heat.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
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.
ICS Number Code 23.040.20 (Plastic pipes); 23.040.45 (Plastic fittings)
UNSPSC Code 40171518(Commercial CPVC pipe)