1.Material:Gcr15,Gcr15SiMn,G20GrNiMo. 2.Quality standard:ISO9001:2008. 3.Brand:ZQZ. 4.ID:90MM~ ... ’S FUNCTIONS:a.Tapered Roller Bearings, according to the row number of rollers, are defined as single row, double row and four row. The single row tapered roller bearings ... in advance,70%T/T againest copy of B/L.2.100%L/C at sight.3.D/P at sightSuperior ...