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ASTM A 234/A 234M Document Information:
Title
Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
ASTM International
Publication Date:
Mar 1, 2007
Scope:
This specification2 covers wrought carbon steel and
alloy steel fittings of seamless and welded construction covered by
the latest revision of ASME B16.9, B16.11, MSS-SP-79, MSS-SP-83,
and MSS-SP-95. These fittings are for use in pressure piping and in
pressure vessel fabrication for service at moderate and elevated
temperatures. Fittings differing from these ASME and MSS standards
shall be furnished in accordance with Supplementary Requirement S58
of Specification A 960/A 960M.
Optional supplementary requirements are provided for fittings
where a greater degree of examination is desired. When desired, one
or more of these supplementary requirements may be specified in the
order.
This specification does not cover cast welding fittings or
fittings machined from castings. Cast steel welding fittings are
governed by Specifications A 216/A 216M and A 217/A 217M.
This specification is expressed in both inch-pound units and in
SI units. However, unless the order specifies the applicable "M"
specification designation (SI units), the material shall be
furnished to inch-pound units.
The values stated in either inch-pound units or SI units are to
be regarded separately as standard. Within the text, the SI units
are shown in brackets. The values stated in each system are not
exact equivalents; therefore, each system must be used
independently of the other. Combining values from the two systems
may result in nonconformance with the specification.
*A Summary of Changes section appears at the
end of this standard.
2For ASME Boiler and Pressure Vessel Code
applications see related Specification SA-234 in Section II of that
Code.
Keywords:
- pipe fittings—steel
- piping applications
- pressure containing parts
- pressure vessel service
- temperature service applications—elevated
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