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API 4F:1995

Заменен
Specification for Drilling and Well Servicing Structures — 17 стр.
Covers the design, manufacture, and use of steel derricks, portable masts, crown block assemblies, and substructures suitable for drilling and servicing of wells. It includes stipulations for marking, inspection, standard ratings, design loading, and design specification of the equipment. Definitions of commonly used terms are included in Appendix A.
Тематика
Series 4: Derricks and Masts