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ASTM D 2657 Document Information:
Title
Standard Practice for Heat Fusion Joining of Polyolefin Pipe and Fittings
ASTM International
Publication Date:
May 1, 2007
Scope:
This practice describes general procedures for making joints
with polyolefin pipe and fittings (excluding polyethylene pipe and
fittings) by means of heat fusion joining techniques in either a
shop or field environment. These procedures are general ones.
Specific instructions for heat fusion joining are obtained from
product manufacturers. See Practice F 2620 for heat fusion joining
of polyethylene pipe and fittings.
The techniques covered are applicable only to joining polyolefin
pipe and fittings of related polymer chemistry, for example,
polypropylenes to polypropylenes, or polybutylenes to
polybutylenes. Material, density, and flow rate shall be taken into
consideration in order to develop uniform melt viscosities and
formation of a good fusion bond when joining the same material to
itself or to other materials of related polymer chemistry.
Parts that are within the dimensional tolerances given in
present ASTM specifications are required to produce sound joints
between polyolefin pipe and fittings when using the joining
techniques described in this practice.
The values stated in inch-pound units are to be regarded as the
standard. The values given in parentheses are for information
only.
The text of this practice references notes, footnotes, and
appendixes which provide explanatory material. These notes and
footnotes (excluding those in tables and figures) shall not be
considered as requirements of the practice.
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. See specific safety precautions in
3.1.1, 5.2, 8.2.3.1, Note 8 and Note 9, and A1.1.
Keywords:
- butt fusion
- fitting
- heat fusion
- joining
- pipe
- polybutylene
- polyolefin
- polypropylene
- saddle fusion
- socket fusion
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