Carbon Steel Tubes In Tubular Feed Water Heaters

This standard is issued under the fixed designation A556/A556M；

the number immediately following the designation indicate the year of original adoption or,

in the case of revision,the year of last revision. A number in parentheses indicates the year of last reapproval.

A superscript epsilon indicates an editorial change since the last revision or reapproval.

• Scope

This specification covers minimum-wall-thickness, seamless cold-drawn carbon steel tubes 

including bending into the form of U-tubes,if specified,for use in tubular feed water heaters.

Size : from 5/8 to 1 1/4-in 15.9-31.8mm

Outerside diameter,inclusive,with minimum wall thickness equal to or greater than 0.045inch (1.1mm)

Order Information:

OD: 5/8’’- 1 1/4” (15.9-31.8mm)

WT: ≥ 0.045’’ 1.1mm

OD Tolerance : 0,+20%

Chemical Requirement :

Hardness Requirement

Tensile Requirements

Reference documents:

ASTM standard.

A450/A450M Specification for General Requirement for Carbon and Low Alloy Steel Tubes

E30 Test Methods for Chemical Analysis of Steel,Cast Iron,Open-Hearth Iron and Wrought Iron