Honeycomb pipe

A typical honeycomb pipe weighs 10—15% of a conventional hberglass pipe, and is signihcantly lighter when compared to a steel or concrete pipe. All of the aforementioned factors contribute to the low cost of this pipe. The sections of this pipe will be built in advance and will be used to slip-line the existing deteriorated steel pipe in the held. 

The actual StifPipe for this project will include a single layer of glass on the outside. However, on the inside, two layers of carbon fabric will be used to meet the design requirements for resisting the internal pressure of the pipe. This will increase the stiffness of the honeycomb pipe even beyond what is shown in these tests with little change in the thickness of the pipe. 

Disturbances upstream of the probe can cause large errors, in part because of the turbulence generated and its effect on the static-pressure measurement. A calming section of at least 50 pipe diameters is desirable. If this is not possible, the use of straightening vanes or a honeycomb is advisable. 

Figure 6.X7A A corrosion-product and deposit mound on a mild steel service water pipe honeycombed by small tubelike organisms. Each hole is approximately 0.01 in. (0.025 cml in diameter.

The principal applications for furan resins are in chemical plant. Specific uses include the lining of tanks and vats and piping and for alkali-resistant tile cements. The property of moisture resistance is used when paper honeycomb structures are treated with furan resins and subsequently retain a good compression strength even after exposure to damp conditions. 

Lunkerhohlraum, m. Metal.) cavity, pipe, lunker-ig, a. Metal.) containing cavities, honeycombed, vesicular, piped, -los, a. limker-frei. 

The method of preparing the air-bags for sale, differs considerably, according to the country In which it is conducted. The commercial pipe, puree, and limp isinglass consist of the hag desiccated, but unopened. The leaf and honeycomb kinds are examples of the bladder cut open and dried unfolded in the staple and hook varieties, it is folded, while in the ribbon isinglass, it is rolled out. It is pished or cut before importation into Great Britain. 

It comes over in the form of pipe, lump, and honeycomb. 

A white, heavy, cuprine Stone, composed of little pipes, like a honeycomb. 

Honeycomb structures offered to the market have a similar cell density as the ceramic ones. After welding inlet and outlet cones to the outer shell, the metallic monolithic converter can be inserted directly into the exhaust gas pipe, which means that the canning procedure used for the ceramic monoliths is not needed anymore. 

A catalytic converter consists of a honeycomb ceramic structure coated in finely divided AI2O3 (the washcoat). Fine particles of catalytically active Pt, Pd and Rh are dispersed within the cavities of the washcoat and the whole unit is contained in a stainless steel vessel placed in sequence in the vehicle s exhaust pipe. As the exhaust gases pass through the converter at high temperatures, redox reactions... 

Advanced ceramic industry non-plastic, oxide and non-oxide ceramic bodies 10 200 0.001 - 20 thin-walled pipes, filter pipes, electrodes, honeycombs, slugs, fuel cells... 

In household ceramics for the production of pugs, e.g. roller machines, in structural ceramics for the production of bricks of all types, for the production of lumps for pressing roofing tiles, for the extrusion of tiles and split tiles, for the production of stone-ware pipes with horizontal but usually vertical extruders (Fig. 48) for pelletising expanded clay, in refractory ceramics and in the further field of technical ceramics, for the production of pugs in the manufacture of isolators (Fig. 49) just as for the extrusion of filigree honeycombs for various applications. 

Cutting laminations are mainly caused by fixtures in the die. Such fixtures are always unavoidable if a die with cores is employed in order to produce a perforated column, as with pipes, hollow profiles, common bricks, honeycombs, etc. The core bows, which are fitted crosswise to the flow direction, separate the body. If the distance between the core bow and column exit is too narrow or if the flow pressure is too low, the parting planes cannot sufficiently weld together. (5)... 

Honeycomb monoliths (Fig. 6.1) are structured catalyst supports consisting of parallel straight capillary channels. Nowadays, they are widely used for the catalytic exhaust converter in the automobile industry and end-of-pipe gas cleaning. The gas-only application of monoliths stems from the fact that the pressure drop is low using the surface area of the catalyst as a criterion, the pressure drop in a monolith is an order of magnitude lower than in randomly packed beds. The channels are about a millimeter in diameter, and on the wall (-100 pm) a wash-coat of catalytic material (-50 pm) is applied. 

Impact Modifiers Impact modifiers are either systems with spherical elastomer particles in a rigid polymer matrix or they are systems with a honeycomb, network type of dispersed elastomeric phase. For the spherical elastomeric particles, examples are acrylonitrile butadiene styrene (ABS), methacrylate-butadiene-styrene (MBS) and acrylics. These systems are either graft copolymers of methyl methacrylate-butyl acrylate-styrene or methyl methacrylate-ethylhexyl acrylate-styrene. For the honeycomb, network type of dispersed elastomeric phase ethylene vinyl acetate (EVA) and chlorinated polyethylene (CPE) or directly dispersed rubber are examples. Both of these two impact modifiers exist in the polymeric form, hence they can hardly migrate and evaporate because of their size. As a result, they pose almost no problems to health. For PVC window frame production, usually the first type (and acrylic impact modifiers) are used while MBS modifiers are found to be very effective in plasticised as well as in rigid PVC. CPE is mainly used in PVC for products like sheet, pipe, gutters and sidings. 

Timetal 3-2.5 Ti-3A1-2.5V Cold formable and weldable, this alloy is used primarily for honeycomb-foil and hydraulic-tubing applications. Industrial applications such as pressure vessels and piping also use this alloy. Available with Pd stabilization to enhance corrosion resistance. 

The drum deck is formed by replaceable filter grids (sieve-plates), which support the filter cloth required for retention of the solids. The filter cloth (usually fabric or metal) is placed into the division strip grooves and fixed by means of a rubber caulk or similar. The supporting filter grids are honeycomb in form, whereby the largest possible cross-section and high filtration capacities are achieved. In the propylene version, as a result of the non-sticky properties of this material, encrustation is virtually excluded. At one end of the drum, there are radial outlet coimections for each cell for the filtrate draw off. These are readily accessible, and do not project beyond the level of the drum deck. For leading the filtrate away, the connections are joined to filtrate pipes by means of sleeves. 

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