Lean alloy steel is often used in special pressure-bearing equipment. The alloying elements often added include manganese, silicon, chromium, nickel, ...
In the fractionating column, the separation of oxygen and nitrogen is realized through the process of two-stage distillation in the upper and lower co...
There must be enough smooth straight pipe sections before and after the flow orifice plate. The distance is 10 times of pipe diameter in front of the ...