ASTM International - ASTM A409/A409M-01
Standard Specification for Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service
|Publication Date:||10 March 2001|
|ICS Code (Iron and steel pipes):||23.040.10|
1.1 This specification covers straight seam or spiral seam electric-fusion-weld
1.2 Several grades of alloy steel are covered as indicated in Table 1.
1.3 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.
1.4 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."