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Clay pipe dating is the act of dating clay tobacco pipes found at archaeological sites to specific time periods.. Pipe bowl found in Kent, southeast England.The circular hole through the tube is slightly off-centre and measures 3.36mm in diameter, and would suggest a rough date of c.1610 AD.
Every pipes should me marked with pipe sizes. If the drawing is detailed, fixture units also should be marked along with the pipe. [1] [2] In the realm of shop drawings, additional clarity is achieved by incorporating sections that reveal the intersection points of various pipes. These sections serve as visual guides, ensuring that the ...
Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...
A reducer reduces the pipe size from a larger to a smaller bore (inner diameter). Alternatively, reducer may refer to any fitting which causes a change in pipe diameter. [15] This change may be intended to meet hydraulic flow requirements of the system or adapt to existing piping of a different size. The reduction length is usually equal to the ...
A methamphetamine pipe is a glass pipe which consists of a tube connected to a spherical bulb with a small opening on top designed for smoking methamphetamine. A pipe that has been used will have carbon deposit on the exterior of the bulb and white or gray crystal residues on the inner surface. [ 1 ]
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Tube sinking, also known as free tube drawing, reduces the diameter of the tube without a mandrel inside the tube. The inner diameter is determined by the inner and outer diameter of the stock tube, the outer diameter of the final product, the length of the die landing, the amount of back tension, and the friction between the tube and the die. [3]
A narrow bowl permits low-temperature operation and more nutrient vapor reception. A bowl, when referred to in pipe smoking, is the part of a smoking pipe or bong that is used to hold tobacco, cannabis, or other substances. The exterior surface of the bowl of some pipes may be fashioned with some kind of design.