marine propeller material:bronze,copper,stainless steel,cast steel ... ,1500mm Reduce ratio:2:1,3:1,4 1.Marine fixed pitch propeller 2.Material and Size as requested 3.blade number ... is available 4.ABS,DNV,CCS ,etcWe provide pitch propellers and controllable-pitch propeller with different blade number and diameters for large ... vessels, tanker, bulk carriers, dry cargo vessels,etc marine propeller