1)Oilless slide bushes are a kind of thin wall wrapped bearings made of triple layer composites material which consists of a steel backing, a sintered porous bronze particles interlayer and calender with PTFE and Pb mixture as surface layer;

2)a kind of bushes are wrapped by bronze strip. The bronze is of particular formulation with high specific gravity and on its surface may be in corporated with spherical or diamond shaped indentations or oil grooves as required by customers;

3)PTFE soft strip bushes are a composites material with bronze wire mesh as frame and calendered with a film of filled poly tetrafluoroethylene.

4) solid lubricated bushes are a kind of high strength cast bronze based material and on the surface of ehich is embedded with preformed solid lubricant. So it can be made into bearing, plate, thrust washes and soon.