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This International Standard provides general principles and specifies requirements for design, manufacture and testing of new drilling and well-servicing equipment and of replacement primary load-carrying components manufactured subsequent to the publication of this International Standard. This International Standard is applicable to the following equipment: a) rotary tables; b) rotary bushings; c) rotary slips; d) rotary hoses; e) piston mud-pump components; f) drawworks components; g) spiders not capable of use as elevators; h) manual tongs; i) safety clamps not used as hoisting devices; j) power tongs, including spinning wrenches. Annex A gives a number of standardized supplementary requirements which apply only when specified.