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This standard specifies the specifications of geological exploration for iron, manganese, chrome minerals, including scope, normative references, objectives and tasks of exploration, degree of investigation and study, requirements for exploration control, exploration work and quality requirements, feasibility evaluation, classifications of mineral resources/reserves, type conditions, requirements for mineral resources/reserve estimates, etc.
This Standard specifies the definition, type and basic parameters, technical requirements, test, inspection rules, mark, packaging, transportation, storage and others of ducted airconditioning (heat pump) units. This Standard applies to ducted air-conditioning (heat pump) units.
This Standard specifies the terms and definitions, model, requirements, test methods, inspection rules and marks, packaging, transport and storage of electronic expansion valve for household and similar air conditioner.
This Standard specifies the types, basic parameters, technical requirements, test methods and inspection rules for trailer axles (including wheel brake assembly and chamber support). This Standard applies to the axles used in the freight trailers with manufacturer maximum total mass not exceeding 8 t.
This standard specifies the principles, methods and requirements for the selection, use and maintenance of respiratory protective equipment. This standard applies to respiratory protective equipment used to prevent harm to the human body from oxygen deficiency and airborne contaminants in the workplace. This standard does not apply to breathing equipment for underwater operations, aviation and medical rescue.
This document provides the comprehensive list of Chinese National Standards - Category: GB, GB/T Series of year 2002.
This standard specifies the type, basic parameters, technical requirements, safety requirements, test methods, inspection rules, marking, packaging, transportation and storage of KQJ downhole drills. This standard applies to non-self-propelled downhole drills (hereinafter referred to as drills).