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2. Internally grooved copper tube - Wikipedia

   en.wikipedia.org/wiki/Internally_grooved_copper_tube

   In a design study of functionally equivalent 5 kW HVAC heat exchangers, tube materials in the coils weighed 3.09 kg for 9.52 mm diameter tube, 2.12 kg for 7 mm diameter tube, and 1.67 kg for 5 mm diameter tube. Tube weight was reduced by 31% when copper tube diameters were downsized from 3/8 inch to 7 mm. Tube weight was reduced by 46% when ...

3. Shipping tube - Wikipedia

   en.wikipedia.org/wiki/Shipping_tube

   A heavy duty composite paper tube. The layers of spiral-wound paper used in its construction are visible. This type of heavy tube is also used as a core for wrapping roll goods. Long corrugated box, square cross section Paperboard tubes. A shipping tube, mailing tube, or cardboard tube is a shipping container used to ship long items. It is ...

4. Paper Dome - Wikipedia

   en.wikipedia.org/wiki/Paper_Dome

   The structure is essentially a hollow paper tube constructed by 58 tubes, each with a diameter of 33 cm with a thickness of about 1.5 cm. The church is 5 meters (16.4 ft) tall. [6] The Dome was constructed as a temporary structure, facilitating its dismantlement. Each tube is coated in a water-resistant coating created in Puli Township.

5. Paper machine - Wikipedia

   en.wikipedia.org/wiki/Paper_machine

   Dryer section of an older Fourdrinier-style paper-making machine. These narrow, small diameter dryers are not enclosed by a hood, dating the photo to before the 1970s. The dryer section of the paper machine, as its name suggests, dries the paper by way of a series of internally steam-heated cylinders that evaporate the moisture. Steam pressures ...

6. Tube (container) - Wikipedia

   en.wikipedia.org/wiki/Tube_(container)

   A tube, squeeze tube, or collapsible tube is a collapsible package which can be used for viscous liquids such as toothpaste, artist's paint, adhesive, caulk, & ointments. Basically, a tube is a cylindrical , hollow piece with a round or oval profile, made of plastic , paperboard , aluminum , or other metal.

7. AOL Mail

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!