Plastic Tanks/

Polypropylene Tanks

Polypropylene tanks, which fall under the broad categorization of plastic or poly tanks, are general-purpose containers fabricated from a common thermoplastic polymer. Polypropylene (PP) is just one of the many types of plastics from which storage tanks can be made. However, the attributes of this particular polymer include advantages such as excellent chemical and corrosion resistance, as well as a very high melting point of 320ºF.

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Assmann Corporation of America
Garrett, IN
Marshall, TX - 888-357-3181
Assmann Corporation is an NSF & ISO certified rotational molder of large and small double wall, vertical, horizontal and conical plastic tanks, and also chemical feed stations plus secondary containment basins. Our rotomolding process and extensive experience makes the difference... We offer many accessories, including full drain outlet, seismic restraints and more.
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Protank® Ltd.
Olive Branch, MS
866-776-8265
Protank offers the best polypropylene tanks available today. All of our plastic vertical tanks are available in 1.5 and 1.9 specific gravity. Our tanks feature tie-down slots, built-in graduated gallon indicators, an offset fill-well and a self-vented, slosh-proof lid. Our specialist can configure any tank to meet your needs, no matter the size or shape. Call us and ask what we can do for you.
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Agri-Industrial Plastics Company
Fairfield, IA
641-472-4188
Agri-Industrial Plastics is your complete solution for polypropylene tanks. Depending upon your specific design & application, we offer Multi-Layer Co-extrusion, Mono-Layer HDPE Fluorinated or Monolayer engineering resin fuel tanks where applicable. Agri-Industrial Plastics can assist your company in the design & production of non-automotive fuel tank systems to meet your specs.
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All Plastics and Fiberglass, Inc.
Mobile, AL
800-226-1134
Since 1981, All Plastics and Fiberglass has manufactured and distributed industrial plastic and fiberglass products including polypropylene tanks. Strict quality control assures our customers they have the best product. We have built a reputation on high quality products and superior customer service and after-sale support for more than two decades. Call us today and see why customers prefer us.
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Dakota Molding
Fargo, ND
701-281-0001
Since 1996 Dakota Molding has been in the plastic tank business. We manufacture tanks such as polypropylene tanks for a multitude of different applications and industries. We offer solutions for new & emerging fuel permeability requirements & metal to plastic cost saving conversions. Our goal is to promote customer focused innovation design solutions that save money & enhance profitability.
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Corrosion Resistant Technologies, Inc.
USA,
Multiple Locations - 800-245-3769
Corrosion Resistant Technologies offers free freight shipment and 17 stocking locations around the nation. CRT brings you the quality & engineering service you need for polypropylene tanks and other tanks from 60 to more than 30,000 gallons. We serve the industrial and agricultural industries with tanks, fittings, accessories and guaranteed chemical resistance to fit your storage & shipping needs.
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Industry Information

Polypropylene Tanks

Polypropylene is a light, durable thermoplastic that is denser, stiffer, and stronger than polyethylene and also has a high melting point. Due to its high rigidity, and good structural strength, polypropylene can be easily fabricated into tanks by means of various welding processes using hot air, extrusion, and fusion equipment. As a result of the many beneficial characteristics of polypropylene, tanks fabricated from this material are ideal for a variety of electroplating applications and are increasingly being used in the demanding environment of steel processing plants. Additional applications of polypropylene tanks include the storage of potable drinking water and a wide variety of mild to aggressive chemicals including hydrogen sulfide, oleic acid, photographic solutions, potassium carbonate, magnesium hydroxide and many more.

Polypropylene is less commonly used than polyethylene for tanks, although it is much stronger than polyethylene and has a much higher melting point. In addition, the crystalline structure of polypropylene falls in between that of low density polyethylene (LDPE) and high density polyethylene (HDPE). Polypropylene tanks have several advantages over traditional metal tanks such as steel, stainless steel and titanium. These advantages include a seamless construction that provides them with greater impact strength and superior resistance to rust, corrosion, chemicals, and fuel additives. In addition, these virtually indestructible tanks also have a longer lifespan than metal tanks, which are apt to fracture and leak. Polypropylene tanks can easily be molded to fit tank compartments, unlike metal tanks, and are simple to install. One common method of fabricating polypropylene tanks is through the injection molding process. In this process, melted pellets of polypropylene are injected into an open mold cavity, which is then clamped shut. Next, the heated polypropylene is cooled by means of water or other fluids that are circulated through the cooling system of the mold and thus used to extract the heat. The polypropylene tank is then held in the mold under high pressure until it solidifies and can be ejected from the mold.