Used 81" Dia. Carbon Steel Quality Welding & Fabrication, Inc. Natural Gas Absorber Column. Approximately 537 cu. Ft., 81" diameter X 229" high straight side. Internal rated 650 PSIG @ 650 degrees F. National Board# 424, S/N 91005. Unit has 4.5" insulation between outer tank and inner liner. Has upper and lower screens and screen supports for a 14'-11" deep molecular sieve bed. Top hemispherical head has 20" access cover (missing cover), 4" inlet, and 1.5" relief valve. Dished bottom has 20" access cover with a center 4" outlet, 1" purge connection. 12" side bottom access port. Column has multiple stiffeners. Mounted on skirt. Overall height is 30'-7". Weight 49,000#. Built 1972