Lean alloy steel is often used in special pressure-bearing equipment. The alloying elements often added include manganese, silicon, chromium, nickel, ...
1. Before hoisting, check and confirm whether the crane body, crane legs, lifting rigging and wire rope meet the safety requirements and hoisting cond...
The reflux liquid in the upper column of the distillation column is throttled by the lower column to the liquid air and liquid nitrogen of the upper c...
It should contact with the front and rear processes when the piston compressor is ready to stop, we should pay attention to the following sequence: fi...
After a long-term operation of the air separation plant, the components in the low-temperature equipment and pipelines of the distillation system will...
