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 5DP, WI 7056, Clarify Sour Service Requirements
Start Date12/20/2021
Closing Date01/21/2022
AssociateBenjamin Coco
CoordinatorBenjamin Coco
ProposalTo clarify the hardness requirements for SS grades of drill pipe, which were included in the 2nd Edition. Hardness requirements were included for the weld zone, but not for pipe body or tool joint. The IRP has both, so 5DP has not included all elements of this standard. This ballot will make 5DP pipe fully compliant with IRP, by adding hardness testing requirements and increased impact toughness.
ResultsIn Progress

Ballot Summary
Did Not Vote9 
Total Responses15 
Total Ballots24 
Response Rate62.50%Must be > 50%
Approval Rate91.67%Must be >= 66.67%
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