... high strength 4.Curable resin-coated ceramic proppant Oil and gas fields can choose proper ceramic proppant according to the depth and ... width of cracks Mesh size:6/12, 8/16, 12/18, 12/20, 16/20 ... , 16/30, 20/40, 30/50, 40/70 Strength stress :52MPa(7500psi),69MPa(10000psi),86MPa(12500psi),103MPa(15000psi); Ceramic Sand