Industrial Valves - Metallic butterfly valves This standard specifies requirements for butterfly valves having metallic bodies for use in flanged or butt welding piping systems and used for isolat...
Descripción: Welding consumables. General product standard for filler metals and fluxes for fusion welding of metallic materials
Norma UNEDescripción completa
Rolled Steel for Welded Structure JISFull description
Descripción completa
Descrição completa
action on structuresFull description
BS EN 12504-4 (2004)Full description
Light and lighting - Measurement and presentation of photometric data of lamps and luminaires - Part 2: Presentation of data for indoor and outdoor work places