A
210 / SA 210
Standard
Specification for Seamless Medium-Carbon Steel Boiler
and Superheater Tubes
Overview
1.1 This specification covers minimum-wall-thickness,
seamless medium-carbon steel, boiler tubes and boiler
flues, including safe ends, arch and stay tubes,
and superheater tubes.
1.2
The tubing sizes and thicknesses usually furnished
to this specification are 1/8 in. to 5 in. [12.7
mm to 127 mm] in outside diameter and 0.035 to 0.500
in. [0.9 to 12.7 mm], inclusive, in minimum wall
thickness. Tubing having other dimensions may be
furnished, provided such tubes comply with all other
requirements of this specification.
1.3 Mechanical property requirements do
not apply to tubing smaller than 1/8 in. [3.2 mm]
in inside diameter or 0.015 in. [0.4 mm] in thickness.
1.4 When these products are to be used
in applications conforming to ISO Recommendations
for Boiler Construction, the requirements of Specification
A 520, shall supplement and supersede the requirements
of this specification.
1.5 The values stated in either
inch-pound units or SI units are to be regarded
separately as standard. (A combination of values
from the two systems may result in nonconformance
with the specification.) The inch-pound units shall
apply unless the "M" designation of the
specification is specified in the order.
Piping Definitions
Specifications 
