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2. Pipe (fluid conveyance) - Wikipedia

   en.wikipedia.org/wiki/Pipe_(fluid_conveyance)

   Pipe is usually delivered to a customer or jobsite as either "sticks" or lengths of pipe (typically 20 feet (6.1 m), called single random length) or they are prefabricated with elbows, tees and valves into a prefabricated pipe spool [A pipe spool is a piece of pre-assembled pipe and fittings, usually prepared in a shop so that installation on ...

3. Hot-dip galvanization - Wikipedia

   en.wikipedia.org/wiki/Hot-dip_galvanization

   Galvanized fumes are released when the galvanized metal reaches a certain temperature. This temperature varies by the galvanization process used. In long-term, continuous exposure, the recommended maximum temperature for hot-dip galvanized steel is 200 °C (392 °F), according to the American Galvanizers Association.

4. Karachi - Wikipedia

   en.wikipedia.org/wiki/Karachi

   Residents of individual streets bear the cost of sewerage pipes, and provide volunteer labour to lay the pipe. [300] Residents also maintain the sewer pipes, [300] while the city municipal administration has built several primary and secondary pipes for the network. [300] As a result of OPP, 96% of Orangi residents have access to a latrine. [300]