Steam Airtightness | with the temperature of 440-450℃ and the pressure of 11-12MPa,Keep for 30 min without puncture | with the temperature of 390-400℃ and the pressure of 8-9 MPa,Keep for 30 min without puncture | with the temperature of 340-350℃ and the pressure of 7-8 Mpa,Keep for 30 min without puncture | with the temperature of 290-300℃ and the pressure of 4-5 MPa,Keep for 30 min without puncture | with the temperature of 200-220℃ and the pressure of 2-3 Mpa,Keep for 30 min without puncture | with the temperature of 140-150℃ and the pressure of 1.5-2 MPa,Keep for 30 min without puncture |