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About This Item
Full Description
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 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.
Document History
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API Spec 4F
viewing
Specification for Drilling and Well Servicing Structures, Fifth Edition, Includes Addendum 1 (2023)- Most Recent
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API Spec 4F
Drilling and Well Servicing Structures, Fourth Edition, Includes Addendum 1 (2016), Addendum 2 (2019), and Errata 1 (2019)- Historical Version
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API Spec 4F
Drilling and Well Servicing Structures, Third Edition- Historical Version
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API 4F
Specification for Drilling and Well Servicing Structures- Historical Version