ASTM A 688/A 688M Standard Specification for Welded Austenitic Stainless Steel Feedwater Heater Tubes

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ASTM A 688/A 688M Document Information:

Title
Standard Specification for Welded Austenitic Stainless Steel Feedwater Heater Tubes

ASTM International

Publication Date:
Mar 1, 2008

Scope:

This specification² covers welded austenitic stainless steel feedwater heater tubes including those bent, if specified, into the form of U-tubes for application in tubular feed-water heaters.

The tubing sizes covered shall be 5/8 to 1 in. [15.9 to 25.4 mm] inclusive outside diameter, and average or minimum wall thicknesses of 0.028 in. [0.7 mm] and heavier.

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 shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.

² For ASME Boiler and Pressure Vessel Code applications see related Specification SA-688 in Section II of that Code.

*A Summary of Changes section appears at the end of this standard.

Keywords:

austenitic stainless steel
feedwater heater tubes
stainless steel tube
steel tube
welded steel tube

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