Chổi than máy ủ đồng Size 32x40x40 mm Thông tin vật liệu : Grade Material type Voltage drop Coefficient of friction Test conditions Resis- tivity µΩm Rockwell Bending strength N/mm² Bulk density g/cm3 Metal content % HR10/40 HR5/40 B25 Bronze-graphite vl l 5 0.3 85 — 85 5.50 90 Classification Symbol Voltage drop between two […]