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About This Item
Full Description
Covers the design, manufacture, and use of steel derricks, portable masts, crown block assemblies, and substructures suitable for drilling and well-servicing operations in the petroleum industry. It includes requirements for marking, inspection, a uniform method of rating, and design loading for the equipment. This document provides two product specification levels (PSLs) that define two levels of technical and quality requirements.
Document History
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API Spec 4F
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
viewing
Drilling and Well Servicing Structures, Third Edition- Historical Version
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API 4F
Specification for Drilling and Well Servicing Structures- Historical Version