... steel round base plate 1,high precision manufacturing 2,longer service life 3.OEM,ODM offered 4.low price nickle plating round base ... heavy machinery product namedimension(mm)materialfinish and weight(kg)base plateOD250 ID102thickness 31.5 holes 4*M20*90º ... . materials processed ability: iron , ductile iron , carbon steel ,alloy steel .stainless steel ,brass, copper,bronze , aluminum alloy or special in ...