HOW TO SPECIFY PIPE FOR OFFSHORE MARINE PIPE LINE PROJECTS

Pipe for offshore and marsh locations should be 40 plus or minus 4 ft long. If the mills do not cooperate and provide pipe which meets the API specifications for double random length pipe, those lengths shorter than 27 ft should be double jointed so as to give a pipe that averages 44 ft; or else 3 short joints 27-36 ft long can be triple jointed and then cut in half. The surplus should be cut off all joints longer than 44 ft and saved for years as pups for fabrication, test nipples, or emergency repair. Two types of field joints that can be applied in one station within one cycle are a primed joint with hot poured asphalt mastic and a Johns-Manville speed joint with concrete or hot poured asphalt mastic coating. As a rule 1.5 hr a day are used for grind out repairs on pipe because of out-of-roundness and variation in wall thickness; on land pipeline construction, these repairs can be made for less than 5% of the cost on a lay barge.

  • Corporate Authors:

    Oildom Publishing Company

    1217 Kennedy Boulevard
    Bayonne, NJ  USA  04002
  • Authors:
    • Ward, D R
  • Publication Date: 1968-7

Media Info

  • Pagination: p. 24-25
  • Serial:
    • Pipe Line News
    • Volume: 40
    • Issue Number: 7
    • Publisher: Oildom Publishing Company

Subject/Index Terms

Filing Info

  • Accession Number: 00056067
  • Record Type: Publication
  • Source Agency: American Petroleum Institute
  • Files: TRIS
  • Created Date: Jun 24 1974 12:00AM