ASTM A 409/A 409M Standard Specification for Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service

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ASTM A 409/A 409M Document Information:

Title
Standard Specification for Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service

ASTM International

Publication Date:
Mar 1, 2008

Scope:

This specification² covers straight seam or spiral seam electric-fusion-welded, light-wall, austenitic chromium-nickel alloy steel pipe for corrosive or high-temperature service. The sizes covered are NPS 14 to 30 with extra light (Schedule 5S) and light (Schedule 10S) wall thicknesses. Table X1.1 shows the wall thickness of Schedule 5S and 10S pipe. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification.

Several grades of alloy steel are covered as indicated in Table 1.

Optional supplementary requirements are provided. These call for additional tests to be made, and when desired shall be stated in the order, together with the number of such tests required.

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. The inch-pound units shall apply unless the "M" designation of this specification is specified in the order.

NOTE 1—The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as nominal diameter, size, and nominal size.

 Footnote 2 For ASME Boiler and Pressure Vessel Code applications see related Specification SA-409 in Section II of that Code.

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

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