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Square Plastic Tubing

A reliable source for Plastic Tubing information and leading Plastic Tubing Companies & Manufacturers.

Square plastic tubes immediately distinguish themselves from most other tubing products in that they are not cylindrical. There are not many applications in which a square tube would be necessary instead of a cylindrical tube. Read More…

Square Plastic Tubing Square plastic tubing products are hollow channels used to transport liquids, gasses and solids (though most solids that pass through tubes must be granular or otherwise free-flowing).
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Leading Manufacturers

Southampton, PA  |  800-506-3924

A leading manufacturer and fabricator of flexible plastic tubing and hose, we produce and stock large quantities of a wide variety of materials, including PVC, polyurethane, silicone, nylon and many more.

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NewAge® Industries, Inc. $$$

Milwaukee, WI  |  414-332-8133

At Absolute Custom Extrusions, we specialize in plastic tubing, while providing custom plastic extrusions and profiles. Products include distributor tubes, hot or cold water tubes, automotive tubing, medical tubing, shipping tubes and golf club tubes.

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Absolute Custom Extrusions, Inc. $$$

Cleveland, OH  |  440-238-3009

GSH is a manufacturer of plastic, extruded, nylon, polycarbonate and polyethylene tubing. We serve a variety of industries with our products, including automotive, consumer, electrical and marine.

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GSH Industries, Inc. $$$

Middlesex, NJ  |  800-229-3338

Petro specializes in plastic tubing, offering custom extruded tubing, coiling & angle cutting. Our clear & color plastic tubing is available in Polycarbonate, Acrylic & PE-PP-Nylon.

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Petro Extrusion Technologies, Inc. $$$

Tempe, AZ  |  877-410-3265

IPE manufactures ePTFE tubes, rods, and sheets in a wide range of sizes and a wide variety of material porosities to fit any customer requirements. We also utilize our 20 years of experience with custom extrusion, project analysis, creativity, and current manufacturing practices to provide the best possible solution to your design challenges. We are committed to understanding your application and will tailor a development program to your time frame, costs, and project needs.

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International Polymer Engineering $$$

St. Charles, IL  |  630-584-8282

If you are in search of quality plastic tubing then you have found the company that can meet your needs. We have a wide variety of stock plastic tubing items and our solutions are very reliable.

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Polytec Plastics, Inc. $$$
placeholder image NewAge® Industries, Inc. Absolute Custom Extrusions, Inc. GSH Industries, Inc. Petro Extrusion Technologies, Inc. International Polymer Engineering Polytec Plastics, Inc.

Square tubes could be chosen because of an aesthetic preference or because of compatibility issues with other tubing. Like cylindrical tubes, they can be found in point of purchase displays, healthcare settings, in children's toys and in many other applications. Tubing in general is used in countless industries for many purposes.

Depending on the industry and the application, a given piece of plastic tubing could be made of High or low density polyethylene (HDPE and LDPE), polystyrene, PET, polypropylene, nylon, ABS, polyurethanes or any other of the many varieties of plastic materials used to create plastic tubing. Each variety features unique qualities of strength, reactivity and transparency.

Acrylic tubing of this form, for example, could be used in a healthcare setting to monitor the flow of fluid between laboratory equipment. Other plastic materials like PVC or HDPE are opaque and are valued more for their qualities of durability and impact resistance.

There are several processes by which square and cylindrical tubing can be formed; the process of making a square tube and the process of making a round tube are identical. Cell casting involves pouring molten plastic materials into molds and allowing them to harden. This is a fairly effective method, but the most effective and efficient method for plastic tube fabrication is plastic extrusion.

Plastic extrusion is a thermoforming process, which means it uses heat to melt a plastic in order to shape it into a useful product. The plastic extrusion process begins with a collection of raw plastic material called stock. The stock is loaded into a hopper suspended above a conveyance channel. The stock is released into the channel, and a large shearing screw within the channel forces the stock toward a die at the end of the channel. A die is a specially designed tool that is used to shape a material.

The die in a plastic tube extruder is a hole and pin in a metal plate. The turning screw causes friction that, combined with heat generated by heating elements along the channel, causes the stock to reach a molten state. At this point the stock is forced through the die and takes its shape. It emerges on the other side of the die as plastic tubing. The tubing is allowed to cool, is cut to length and is prepared for shipment or additional processing.

Square Plastic Tubing Informational Video