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SC8-Subcommittee on Drilling Structures & Equipment

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 Contact Details

Katie Burkle
p: 202.682.8507


There are currently no upcoming events.

 Committee Scope

API SC8 develops and maintains approximately 11 standards on:

  • drilling structures - Spec 4F and RP 4G;
  • drilling equipment - Spec 7K and RP 7L;
  • hoisting equipment - RP 8B and Spec 8C;
  • wire rope and roller chain - Spec 9A, RP 9B, and Spec 7F;
  • hammer unions - RP 7HU1 and Spec 7HU2.

You can get further details and scopes of these standards in the Exploration and Production section of the API Publications catalog at


 Committee Documents


  Reference Documents
  CSOEM Links

 Open Ballots

 Ballot IDStatusResultsOpensClosesDescription
Committee ID : 532SC08/TG01: Drilling Structures
4284ClosedResolution Required10/04/201711/15/2017API 4F - Item 5102 (Definition of Crown Block Assembly)
4285ClosedResolution Required10/04/201711/15/2017API 4F - Item 5104 (Definition of Design Validation)
4286ClosedResolution Required10/04/201711/15/2017API 4F - Item 6106 (Tubular Steel)
4287ClosedResolution Required10/04/201711/15/2017API 4F - Item 6107 (Removal of Commercial Requirements)
Committee ID : 1112SC08/TG03: Hoisting Equipment
2597ClosedPass02/28/201204/06/2012Spec 8C, Item 0304 - API 8C/7K Demarcation
2701ClosedPass07/02/201208/03/2012Spec 8C, Item 1302 - Top Drive
3013ClosedPass07/29/201309/09/2013API 8B & 8C, Item 2302 - Wear Limits for Elevator Bores
3058ClosedPass08/27/201309/17/2013Third Reballot of API 8C, Item 0305 - Hydraulic Cylinders
3104ClosedResolution Required10/01/201311/12/2013API 8C, Revisions to Section 9.9.3
3454ClosedResolution Required02/11/201503/25/2015API 8C - Item 0301: Purchasing Guidelines
3526ClosedResolution Required03/11/201504/22/2015API 8C - Item 4303: Revisions to Section 8.6.1 (proof load testing)
3737ClosedOn Hold11/23/201501/11/2016API 8C - Item 5305 (Manufacturing Process Controls)
3843ClosedResolution Required04/01/201605/13/2016API 8C - Item 3302 (Pin Connection Ratings and Marking)
3844ClosedResolution Required04/01/201605/13/2016API 8C - Item 4304 (Prototype Testing of Washpipes with Mechanical Seals)
3845ClosedResolution Required04/01/201605/13/2016API 8C - Item 5303 (Alignment of API 8C Scope with API 7K Scope)
3870ClosedResolution Required05/03/201606/14/2016API 8B/API 8C - Item 4301 (Sheave Rim Groove)
3965ClosedPass09/15/201610/20/2016API 8C - Item 5306 (Impact Properties of Elevator Slips)
4070ClosedResolution Required02/16/201703/30/2017API 8C - Item 3301 (Nominal Equivalent Stress)
4476ClosedIn Progress05/09/201806/07/2018API 8B - 8th Edition, Addendum 1
4473ClosedIn Progress05/08/201806/07/2018API 8C - Item 7302 (Sheave Marking Req)
4474ClosedIn Progress05/08/201806/07/2018API 8C - Item 7303 (Rotary Swivel Pressure Test)
Committee ID : 1113SC08/TG04: Wire Rope & Roller Chain
4468ClosedIn Progress05/07/201806/07/2018API 9B - Item 1402 (Wire Rope Design Factors)
4472ClosedIn Progress05/08/201806/07/2018API 9B - Item 5401 (Improve Clarity)
Committee ID : 1331SC08/TG05: Hammer Unions
3188ClosedPass02/27/201404/10/2014Reaffirmation of API 7HU1, 1st Edition
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