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List of Chemical Elements Atomic No Name ofelement Chemicalsymbol Origin of name 89 Actinium Ac From the Greek word aktinos (ray) 13 Aluminium Al From the Latin word alumen (alum) 95 Americium Am From America where it was dis...Read more»
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Tubesheets of Heat Exchangers Tubesheets are usually made from a round flat piece of metal with holes drilled for the tube ends in a precise location and pattern relative to one another. Tube sheet materials range as tube materials. Tubes are attached to the tube sheet by pneumatic or hydraulic p...Read more»