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 2446, Verification Terminology Usage
Start Date07/08/2021
Closing Date08/06/2021
AssociateBenjamin Coco
CoordinatorBenjamin Coco
ProposalModify the wording in API 5CT, Section 8.2, to remove the conflict between API 5CT and API Q1 regarding the use of verification for measuring equipment. The current use of verification in API 5CT, Section 8.2, allows only a visual examination as a verification of measurement equipment accuracy. This does not align with API Q1 that requires verification of measuring equipment to be against a standard of know accuracy. Unnecessary monogram audit findings are being generated due to this conflict. Not taking this action will allow continued and unresolvable audit findings within the monogram audit process.
ResultsIn Progress

Ballot Summary
Did Not Vote4 
Total Responses31 
Total Ballots35 
Response Rate88.57%Must be > 50%
Approval Rate96.43%Must be >= 66.67%
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