Textul licitației

polishing equipment must be capable of producing polished thin sections, thin sections with surface glass, polished sections, and glued sections made from crushed material. GTK usually uses hot plate and oven impregnating with Araldite and Petropoxy adhesives for the production of thin sections. GTK uses a mineral and polarization microscope and a micrometer to inspect the quality and thickness of the grains. GTK produces thin sections from soft rock (shale) to very hard rock types (granite), as well as glued sections from crushed stone. As a general rule, the rock types in Finland are hard. The most produced sections at GTK are as follows: Polished thin section and section with surface glass, size 48 mm x 28 mm, other sizes are also possible Polished section, size varies, normally sample is round, and the size is 25 mm x 30 mm. Glued gravel section, size varies, normally sample is roun