Construction of a co-extruded tube alleviates the problem of dissimilar joint welding involving stainless steel primary piping and the carbon steel shell construction of a nuclear reactor vessel. This consists of welding an Armco Iron overlay on a stainless tube, inserting it into a carbon steel billet, and then extruding the composite. Numerous disadvantages of this procedure have led to development of an experimental simulated co-extruded nozzle. An Armco Iron weld is hand deposited on a stainless tube and a submerged arc deposit of carbon steel. The overlay is placed only on the section to be welded into the reactor vessel, not on the entire length of the nozzle. Advantages to this procedure are: lower cost, practically no eccentricity of the stainless liner, better bond between the Armco Iron and carbon steel, and a simplified welding procedure at the junction to the stainless pipe.

  • Supplemental Notes:
    • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number BAW-487.
  • Corporate Authors:

    Babcock and Wilcox Company

    Quality Control Department
    Barberton, OH  United States 
  • Authors:
    • Emmanuel, G N
  • Publication Date: 1958-12-2

Media Info

  • Features: Photos;
  • Pagination: 10 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00026090
  • Record Type: Publication
  • Source Agency: Maritime Administration
  • Report/Paper Numbers: 487
  • Contract Numbers: AT(30-3)-274
  • Files: TRIS, USDOT
  • Created Date: Jan 26 1973 12:00AM