ASTM A409/A409M-19 pdf free.Standard Specification for Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service.
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.
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 SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.
3. Ordering Information
3. 1 Orders for material to this speciheation should include the following, as required. to describe the desired material adequately:
3.1.1 Quantity (feet. centimetres, or number of lengths).
3.1.2 Name of material (straight seam or spiral seam elecinc-fusion-welded auslenhtic steel pipe).
3.1.3 Grade (Table 1),
3. I .4 Site (outside diameter and schedule number, or wall thickness).
3.1.5 Length (specific or randoim (Section 11.
3.1.6 End finish (Section on Ends of Specification A999/ A999M),
3.1.7 Optional requirements (5.2.1 — 5.2.3 removal of weld bead: 5.3.2. special heat treatment: 15.2. nondestructive test:
10.1.1, outside diameter tolerance; 11.2. length circumferentially welded; 12.3, repair by welding and heat treatment subsequent to repair welding: 12.4, sand blasted or pickled;
17.1 Certification: Supplementary Requirements S1 to S6).
3. 1 .8 Specification designation, and
4. General Requirements
4.1 Material furnished to this specification shall conform to the applicable requirements of the current edition of Specification A999/A99M. unless otherwise proided herein.
5. Materials and Manufacture
5.1 If a specific type of melting is required by the purchaser it shall be stated on the order.
5.2 Welding:
5.2. 1 The Aekls shil1 he made by the manual or automatic electric-welding process. For manual welding, the operator and procedure shall be qualified in accordance with the ASME Boiler and Pressure Vessel Code, Section IX Unless otherwise specified on the purchase order, the pipe may he welded with or without filler metal when the automatic electric-welding process is used.ASTM A409/A409M-19 pdf free download.