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Metal covered electrodes for manual arc welding of high-alloyed steel with special properties. Types

Document status: Active

Connector tees for tube connections on external cone. Construction and dimensions

Document status: Active

Organic fertilizers. Methods of microbiological analysis

Document status: Active

United power system and isolated power systems. Relay protection and automation. Differential phase protection of power lines at voltage 110–220 kV. Testing

Document status: Active

Hexagonal socket flat-point set screws. Product grades A and B. Specifications

Document status: Withdrawn

Fresh lettuces, curled-leaved endives and broadleaved (batavian) endives. Specifications

Document status: Cancelled