DEAR's air separation's welfare faq

Special pressure-bearing equipment generally bears internal pressure, that will cause tensile stress inside the shell, which is called working stress....

The amount of liquid nitrogen removed from the lower column of the air separation unit will affect the purity of the liquid nitrogen in the lower colu...

Lean alloy steel is often used in special pressure-bearing equipment. The alloying elements often added include manganese, silicon, chromium, nickel, ...