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API SPEC 4F (Complete Document)
Revision / Edition: 4    Chg:    Date: 01/00/13   Abbreviations Definitions
Active, Most Current Item is contained in these sets
SPECIFICATION FOR DRILLING AND WELL SERVICING STRUCTURES
Additional Comments:G04F04
Published By:American Petroleum Institute (API)
Page Count:62
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Description / Abstract Back to Top
This specification states requirements and gives recommendations for suitable steel structures for drilling and well servicing operations in the petroleum industry, provides a uniform method of rating the structures, and provides two Product Specification Levels (PSLs).

This specification is applicable to all new steel derricks, masts (including masts with guy lines and service rig masts), substructures, and crown block assemblies with a date of manufacture after the effective date of this specification.

Annex A provides a number of standard Supplementary Requirements (SRs) that apply only if specified by the purchaser. Annex B is an informative Annex to assist in an understanding/application of this API specification. Annex C is an informative Annex regarding the API Monogram Program and the API Monogram marking requirements. Annex D is an informative Annex providing guidelines to assist the Purchaser with purchasing equipment manufactured to the requirements in this API document.
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