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 5L, WI 4250, Annex K Lamination Control
Start Date02/19/2021
Closing Date03/19/2021
AssociateBenjamin Coco
CoordinatorBenjamin Coco
ProposalRevise the requirements for UT control for laminations in Annex K to allow, if agreed, ultrasonic inspection of the strip/plate body and edges with automated systems in accordance with ISO 10893-9 to verify that the strip/plate body and edges are free of laminar defects specified in K.2.1.1, in lieu of ultrasonic inspection at pipe ends as specified in K.2.1.2. The reason for the proposed action is that there are customers that requires UT control for laminations of the strip/plate body and edges with 100 % coverage. These customers would be open to wave the ultrasonic inspection of the pipe ends as specified in K.2.1.2, because it becomes redundant, if 100 % of the strip/plate surface has been inspected. Duplicating the inspection adds unnecessary impacts.
ResultsIn Progress

Ballot Summary
Did Not Vote3 
Total Responses28 
Total Ballots31 
Response Rate90.32%Must be > 50%
Approval Rate100.00%Must be >= 66.67%
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