Pipe
Pipe --- a hollow cylinder of metal, wood, or other material, used for the conveyance of water, gas, steam, petroleum, etc. (http://dictionary.reference.com/browse/pipe)
Within industry, piping is a system of pipes used to convey fluids (liquids and gases) from one location to another. The engineering discipline of piping design studies the efficient transport of fluid.
Industrial process piping (and accompanying in-line components) can be manufactured from wood, fiberglass, glass, steel, aluminum, plastic, copper, and concrete. The in-line components, known as fittings, valves, and other devices, typically sense and control the pressure, flow rate and temperature of the transmitted fluid, and usually are included in the field of Piping Design (or Piping Engineering). Piping systems are documented in piping and instrumentation diagrams (P&IDs). If necessary, pipes can be cleaned by the tube cleaning process.
(Wikipedia, Piping, 11/1/2011)
“The terms "pipe" and "tube" are almost interchangeable, although minor distinctions exist — generally, a tube has tighter engineering requirements than a pipe. Both pipe and tube imply a level of rigidity and permanence, whereas a hose is usually portable and flexible. A tube and pipe may be specified by standard pipe size designations, e.g., nominal pipe size, or by nominal outside or inside diameter and/or wall thickness. The actual dimensions of pipe are usually not the nominal dimensions: A 1-inch pipe will not actually measure 1 inch in either outside or inside diameter, whereas many types of tubing are specified by actual inside diameter, outside diameter, or wall thickness.” (Wikipedia, Tubing, 11/22/2011)
Recent US Patents
11/29/2011
8,066,838
Composite tubes and method of manufacturing same
Burger of Hillerich & Bradsby, Kentucky fabricateda composite tubular member using a mandrel having a central longitudinal axis and wrapping a plurality of composite fiber layers around said mandrel wherein the longitudinal axis thereof is oriented at a first angle with respect to the longitudinal axis of said mandrel. (RDC 12/5/2011)
11/29/2011
8,066,926
Method of manufacturing reinforced medical tubing
Fogarty from Wisconsin produced reinforced tubing suitable for medical device by molding an inner layer around a core with an outer surface with recessed pathways. An outer layer including an inner surface and an outer surface is subsequently molded over the inner layer and the reinforcement member. (RDC 12/5/2011)
11/15/2011
8,057,877
Flexible hose with non-phthalate plasticizers additives for transporting food liquids
Mizzalira and Missalira, Italy, developed a flexible hose for transporting food liquids, consisting an outer protective layer of a first flexible polymer material and an inner layer in direct contact with food made of a second flexible polyvinyl chloride (PVC). The second polymer material includes a plasticizer agent having as low a migration level as to maintain the flexibility of said second polymer material substantially unaltered with time. The plasticizer agent is selected from the group comprising non-phthalate additives, so that it can be non-toxic and non-polluting for the food products to be transported. This plasticizer is selected from adipates, benzoates, 1,2-propanediol and/or 1,3- and/or 1,4-butanediol and/or polypropylene glycol polyesters with adipic acid, acetic acid or C10-C18 fatty acids or n-octanol and/or n-decanol, trimellitates, phosphates, sebacates, alkyl sulphonates, epoxidized linseed and soybean oils. (RDC 11/18/2011)
11/15/2011
8,057,875
Resin composition for tubes and tube
Noda, Mihayashi and Ohara of Kaneka, Japan, developed a resin for tubes excellent in balance among wear resistance, flexibility, gas permeation resistance and low resilience (pliability). The resin consists of an isobutylene isobutylene block copolymer and a thermoplastic polyurethane resin. (RDC 11/18/2011)
10/25/2011
8,043,548
Polymer mortar composite pipe material and manufacturing method
White of Iowa State University, Iowa, produced composite material and plunger-cast pipe material consisting of waste, chemically unmodified PET material, one or more waste filler materials (e.g. rock crusher fines, lime sludge or waste coal combustion by-products), and fiber reinforcement (e.g. glass, metal, ceramic, carbon, organic, and polymer fibers). The PET material is melted and mixed in a container to disperse filler material and fiber reinforcement in the PET material. The resulting mixture can be formed into a tubular pipe shape using the plunger-cast manufacturing method. (RDC 10/28/2011)
Recent Journal Articles
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Review Articles
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