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