spherical bronze powder (sbp) is a pre-alloyed bronze powder with spherical particle shape produced by gas atomization process. It is majorly used in producing sintered bronze filters. every particle of spherical bronze undergoes through a test of sphericity. Grades are designed as per porosity required in final sintered filters. grades produced +850 – 420 microns +500 – 250 microns +300 – 150 microns +150 – 75 microns +100 – 53 microns +63 – 45 microns -53 microns – diamond tools