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 Siderurgica Nacional Sidenal S.A.
  Sello de Calidad certificado ICONTEC
 6 Número de designación NTC 2289
 W Acero soldable
 60 Acero Sismo-resistente
 
 
 
    
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  NTC ISO 9001-2000  IQNET - ICONTEC
    
   
 NTC 2289
 		 NTC 161