GOST 20707
GOST 20707 (Copper and brass ribbons for radiators. Specifications)· GOST (Russia) · 5 materials
| Designation | Alternative designation | Material group | |
|---|---|---|---|
| L63 | Л63 | Copper | chevron_right |
| L90 | Л90 | Copper | chevron_right |
| M1 | М1 | Copper | chevron_right |
| M2 | М2 | Copper | chevron_right |
| M3 | М3 | Copper | chevron_right |