double-wall pipe
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Double-walled pipe — A double walled pipe is a secondary contained piping system. It is a pipe within a pipe, or encased in an outer covering, with an annulus (interstitial space) between the two diameters. The inner pipe is the primary or carrier pipe and the outer… … Wikipedia
Pipe (fluid conveyance) — For structural pipe, see Hollow structural section. For other uses, see Pipe (disambiguation). Steel pipes … Wikipedia
Pipe (material) — A pipe is a tube or hollow cylinder used to convey materials or as a structural component. The terms pipe and tube are almost interchangeable. A pipe is generally specified by the internal diameter (ID) whereas a tube is usually defined by the… … Wikipedia
double glazing — noun a window with two panes of glass and a space between them; reduces heat and noise transmission through the window • Hypernyms: ↑window * * * noun [noncount] technical : two layers of glass that are set in a window to keep heat inside and… … Useful english dictionary
Pipe and tube bender — Tube and pipe benders are machines which bend tube, pipe and solid metals. Pipe bending machines can either be human powered, hydraulic assisted, or hydraulic motor driven. In the pipe bending operation the tube may be supported internally or… … Wikipedia
Hurricane (pipe) — Hurricane is the name of a high end pipe sold for tobacco use, although it is most commonly used to smoke cannabis. It is manufactured in Austria, and is widely known for its expensive and unique design.DesignIts design is unique from other pipes … Wikipedia
Nominal Pipe Size — (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures.[1] Pipe size is specified with two non dimensional numbers: a nominal pipe size (NPS) for diameter based on inches, and a schedule (Sched.… … Wikipedia
Iron pipe size — (IPS) is an old system still used by some industries, including major PVC pipe manufacturers, and legacy drawings and equipment.The iron pipe size standard was initiated in [1801 1810] and remained in effect until after World War II. The IPS… … Wikipedia
Tin can wall — Tin cans, although not a common building source, have been used for creating structures. They can be laid in concrete, stacked vertically on top of each other, and crushed or cut and flattened to be used as shingles [http://www.eco… … Wikipedia
tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening … Universalium
keyboard instrument — ▪ music Introduction any musical instrument on which different notes can be sounded by pressing a series of keys, push buttons, or parallel levers. In nearly all cases in Western music the keys correspond to consecutive notes in the… … Universalium
