182 / SA 182
Specification for Forged or Rolled Alloy-Steel Pipe
Flanges, Forged Fittings, and Valves and Parts for
1.1 This specification covers forged
low alloy and stainless steel piping components
for use in pressure systems. Included are flanges,
fittings, valves, and similar parts to specified
dimensions or to dimensional standards such as the
1.2 For bars and products machined
directly from bar, refer to Specifications A 479/A
479M and A 739, for the similar grades available
in those specifications. Products made to this specification
are limited to a maximum weight of 10 000 lb [4250
kg]. For larger products and products for other
applications, refer to Specification A 336 for the
similar grades available in that specification.
1.3 Several grades of low alloy
steels and ferritic, martensitic, austenitic, and
ferritic-austenitic stainless steels are included.
Selection will depend upon design and service requirements.
1.4 Supplementary requirements
are provided for use when additional testing or
inspection is desired. These shall apply only when
specified individually by the purchaser in the order.
This specification is expressed in both inch-pound
units and SI units. However, unless the order specifies
the applicable "M" specification designation
(SI units), the material shall be furnished to inch-pound
1.6 The values stated in either
inch-pound units or SI units are to be regarded
separately as the standard. (A combination of values
from the two systems may result in nonconformance
with the specification.)