... carbon steel 55 q (12 kg/m, 15 kg/m, 22 kg/m, 30 kg/m).Under General diameter of 2.25 ... meters, the autoclave working pressure is 1.3 MPa, design ... temperature is 195.0 °C to 198.3 °C, design temperature; Above the diameter of 2.5 meters , the ... temperature is 201.4 °C to 204.3 °C. 2013 New Design Still kettle made in Xinxiang xinda boiler factory