GOST 21646
GOST 21646 (Copper and brass tubes for heat-exchange apparatus. Specifications)· GOST (Russia) · 9 materials
| Designation | Alternative designation | Material group | |
|---|---|---|---|
| L68 | Л68 | Copper | chevron_right |
| L70 | Л70 | Copper | chevron_right |
| LA77-2 | ЛА77-2 | Copper | chevron_right |
| LAMsh 77-2-0,05 | ЛАМш 77-2-0,05 | Copper | chevron_right |
| LMsh 68-0,05 | ЛМш 68-0,05 | Copper | chevron_right |
| LO70-1 | ЛО70-1 | Copper | chevron_right |
| LOMsh70-1-0,05 | ЛОМш70-1-0,05 | Copper | chevron_right |
| M1r | М1р | Copper | chevron_right |
| M2r | М2р | Copper | chevron_right |