Plastic plate, rods and semi-finished shapes include shaped plastic parts and semi-finished plastic stock. Most plastic parts are fabricated via molding, casting, extrusion, pultrusion, machining, thermal forming, plastic welding, blow molding, and grinding processes. Semi-finished plastic stock is usually available in bar, film, flat, hex, plate, profile, rod, round, sheet, shim, and sphere form. Specialized plastic shapes such as angles, cast stock, channels, extrusions, I-beams, molded stock, tees, and tubes are also available. Size specifications for plastic plates, rods, and semi-finished shapes vary by stock type. For example, plastic shapes such as bars, rods, plates and tubes are specified according to overall thickness, overall width or outer diameter (OD), and overall length. Inner diameter (ID) is an important specification for tubes and other hollow stock shapes. Some plastic plates, plastic rods and semi-finished plastic shapes provide anti-static or electrostatic discharge (ESD) control, or shielding from electromagnetic interference (EMI) and radio frequency interference (RFI). Others are flame retardant, flexible, dampening, or approved by Underwriters Laboratories (UL). Plastic plates, rods and semi-finished shapes that provide electrical and/or thermal insulation are also available.
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