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Crown Block Assemblies

Standard
API-4F
Product use
Drilling & hoisting

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Product use and sources

Transfer torque and lifting force downhole, using drilling tools, structures and circulation systems to reach the reservoir.

Standard description (API source text):

Drilling and Well Servicing Structures

Names and standard mappings come from the API Composite List search snapshot. Product-use groups and Chinese reading aids are OFMP editorial additions, not official API classifications or translations; original English names are retained for comparison. Category snapshot: 2026-10-10

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