Drills liquid libration sieve single, double-decked hook and the board style frame sieve has technological advance, the craft reasonable, bears the acid and alkali, the anti-intercrystalline corrosion anti- high frequency, (satisfies high frequency resonates the 1500-1700r/min request), the service life may achieve 600 hours, the mud conditioning ability strong, the comprehensive cost is low and so on the characteristic.