BS 4231:1982 pdf free download.British Standard Classification for Viscosity grades of industrial liquid lubricants. O INTRODUCTION BS 4231 has been prepared to meet the immediate needs of those ISO Technical Committees that promulgate International Standards for equipment...
BS 4231:1992 download free
BS 4231:1992 download free.CI assoication for Viscosity grades ofbindustrial liquid lubricants. Introduction BS 4231 has been prepared to meet the immediate needs of those ISO Technical Committees that promulgate International 1 Standards for equipment and need to...