чтобы не потерять:
удельный вес
текстолит односторонний: 0,317 г/см^2
труба алюминиевая, круг:
- 10мм*1мм = 0,77 г/см
- 12мм*1мм = 0,83 г/см
труба алюминиевая, квадрат:
- 14х14 1.0мм = 1,32 г/см
- 12х12 1.2мм = 1,48 г/см
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