Committee Scope

Subcommittee 5, Tubular Goods (SC5)                        

API Staff Contact: Ben Coco (


SC5 develops, approves, and maintains standards pertaining and related to the product design and manufacture of:

  • casing/tubing and accessories for well operations
  • line pipe for transmission and facility piping
  • drill pipe and drill stem elements for drilling operations
  • pipe threading and gauging and thread compounds

The standards under SC5 are also supported with additional resources having expertise in metallurgy, performance properties, sour service, and coiled pipe

SC5 Advisory/Resource/Task Groups

  • Advisory Groups
    • Manufacturer (MAG)
    • User (UAG)
  • Resource Groups
    • Non-destructive Testing (RGNDT)
    • Performance Properties (RGPP)
    • Sour Service Products (RGSSP)
    • Coiled Tubulars (RGCT)
    • Monogram Program (RGMP)
  • Task Groups
    • Oil Country Tubular Goods (TGOCTG)​
    • Line Pipe (TGLP)
    • Drill Stem Elements (TGDSE)
    • Threading, Gauging, and Compounds (TGTGC)
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Ballot Information
NameSPEC 5CT, WI 2443, High-Collapse Requirements
Start Date05/19/2022
Closing Date06/17/2022
AssociateBenjamin Coco
CoordinatorBenjamin Coco
ProposalTo develop an Annex in API 5CT for the requirements on the estimation and validation of external pressure ratings of tubulars (collapse resistance) different from the ones defined in Section 8 of API 5C3, using the guidance of Annexes F, G, and H of API 5C3, or equivalent, also including the requirements for process control during manufacture, testing, marking and certification.
ResultsIn Progress

Ballot Summary
Did Not Vote8 
Total Responses27 
Total Ballots35 
Response Rate77.14%Must be > 50%
Approval Rate91.30%Must be >= 66.67%
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