... no surface hardness treatment, which lower the cost of the mating components. 7) No absorption to water/oil, ... anti-corrosion. The products now are used in sliding components of different machinery, such as auto machinery, piston pump, ... 01~0.03mm, anti-abrasion material, which will form a lubricating film during operation. 2) Bronze powder layer, ... SF-1B DU slide bearing sleeve names of parts of car