ROMA - Presentazione ToffaninPaolo
Coatings ABRASIVE SPECIFICATION NO. 1 Type I - Natural Mineral Abrasives (Abrasivi minerali naturali ) These are naturally occurring minerals, including, but not limited to, quartz sands, flint, garnet, staurolite, andolivine Type ll - Slag Abrasives (scorie abrasive) These are slag by-products of coal ...