Bronze sintered alloy layer, with a thickness requirement of 0.2-1.0 mm; Steel base layer: made from high-quality rolled carbon steel or alloy steel plates as the substrate; Sintered bronze alloy forms a double-layer composite material, which endows the material with comprehensive mechanical properties and friction reduction and wear resistance. Widely used in high-pressure gear pumps and motors, etc. Customization is available according to customer drawings.