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2. Electrical conduit - Wikipedia

   en.wikipedia.org/wiki/Electrical_conduit

   Galvanized rigid conduit (GRC) is galvanized steel tubing, with a tubing wall that is thick enough to allow it to be threaded. Its common applications are in commercial and industrial construction. [1] It is designed to protect wire and connectors. Intermediate metal conduit (IMC) is a steel tubing heavier than EMT but lighter than RMC. It may ...

3. Polyvinyl chloride - Wikipedia

   en.wikipedia.org/wiki/Polyvinyl_chloride

   In a fire, PVC can form hydrogen chloride fumes; the chlorine serves to scavenge free radicals, making PVC-coated wires fire retardant. While hydrogen chloride fumes can also pose a health hazard in their own right, it dissolves in moisture and breaks down onto surfaces, particularly in areas where the air is cool enough to breathe, so would ...

4. Die forming (plastics) - Wikipedia

   en.wikipedia.org/wiki/Die_Forming_(Plastics)

   The newly coated wire is then drawn through an air or gas flame to smooth the surface of the coating, and finally a water bath to fully cool the coated wire. Coated wires are now spooled to prepare for further processing, if desired. There are two major types of dies used in overjacketing extrusion, both based on an overall crosshead design.

5. Plastic extrusion - Wikipedia

   en.wikipedia.org/wiki/Plastic_extrusion

   This Acu-Power conduit pipe is co-extruded - black inside with a thin orange jacket, to designate power cables. Typical plastic materials that are used in extrusion include but are not limited to: polyethylene (PE), polypropylene , polyacetal , acrylic , nylon (polyamides), polystyrene , polyvinyl chloride (PVC), acrylonitrile butadiene styrene ...

6. Duct (flow) - Wikipedia

   en.wikipedia.org/wiki/Duct_(flow)

   Round duct is made using a continuous spiral forming machine which can make round duct in nearly any diameter when using the right forming die and to any length to suit, but the most common stock sizes range evenly from 4" to 24" (10-60 cm) with 6"-12" (15-30 cm) being most commonly used. Stock pipe is usually sold in 10' (300 cm) joints.

7. Wire drawing - Wikipedia

   en.wikipedia.org/wiki/Wire_drawing

   For hot drawing, cast-steel dies are used. For steel wire drawing, a tungsten carbide die is used. The dies are placed in a steel casing, which backs the die and allow for easy die changes. [2] Die angles usually range from 6–15°, and each die has at least 2 different angles: the entering angle and approach angle. [2]

8. Chlorinated polyvinyl chloride - Wikipedia

   en.wikipedia.org/wiki/Chlorinated_polyvinyl_chloride

   CPVC sprinkler pipe inside a firestop mock-up. Chlorinated polyvinyl chloride (CPVC) is a thermoplastic produced by chlorination of polyvinyl chloride (PVC) resin. CPVC is significantly more flexible than PVC, and can also withstand higher temperatures. Uses include hot and cold water delivery pipes and industrial liquid handling.

9. Pipe (fluid conveyance) - Wikipedia

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

   The pipe sizes that are in use today in PVC and galvanized were originally designed years ago for steel pipe. The number system, like Sch 40, 80, 160, were set long ago and seem a little odd. For example, Sch 20 pipe is even thinner than Sch 40, but same OD.