One uses? 
 Sub-cylinder is also called the sub-Drum, it is essential for steam boiler ancillary equipment, widely used in power generation, petrochemical, steel, cement, construction and other industries. ?? 
 Second, the performance of the structure 
 ? Sub-cylinder is the main equipment of the boiler, the boiler used to run when the steam distribution to the various quarters pipe, sub-cylinder Department of pressure equipment is a pressure vessel. The main function of the sub-cylinder is the distribution of steam, and therefore have more than one seat to connect the boiler main steam valve and steam distribution valve, so that the sub-cylinder steam points to the need of at the sub-cylinder. Sub-cylinder pressure components as follows: with steam valve seat, the seat of the main steam safety valve seat, trap seat, pressure gauges, thermometers, Block; head, shell, flange materials are of Q235-A / B , 20g, 16MnR specification model ф159-ф1500, working pressure for 1-2.5MPa Operating Temperature: 0 ~ 400 ℃ Working medium: steam, hot and cold water, compressed air. Particular type can be arranged according to user requirements to design. ?? 
 Third, the technical specifications 
 ? Medium is steam, according to Pressure Vessel Code provides design and to determine the cylinder diameter, material and thickness, the general principles: the cylinder diameter should be 2-2.5 times the maximum take over the diameter may cylinder body fluid determine the flow rate, seamless pipe of material 10-20 #, Q235B, 20g, 16MnR sheet rolling, take over the number determined by the engineering design. ?? 
 Fourth, the Order Information 
 ?, Flow, pressure, temperature parameters. 
 ? 2, the inlet out of steam, drain pipe diameter, number. 
 ? Whether the requirements of sub-cylinder sizes. ? 
 4, if you want to gauge, thermometer, safety valve.