-Molded Plastic Tanks-
Types of Molded Plastic Tanks
Types of Resins
Our molded plastic tanks are offered in four types of resins: High Density Polyethylene (HDPE), Cross-Linked High Density Polyethylene (XLPE), Polypropylene (PP) and Polyvinylidene Fluoride (PVDF). Each resin is well suited for various applications:
| Material Resin | Advantages and Applications | Do Not Use With: |
| High Density Polyethylene (HDPE) | - Hard, smooth finish
- White in color
- Good temperature resistance
- Storing caustics
- Metal finishing
- Storing organic and inorganic acids
- Water treatment
- Dispensing lab and photo chemicals
- Plating
- Brine
| - Strong oxidizing agents
- Aromatic Hydrocarbons
- Halogenated-aliphatic hydrocarbons
- Liquefied Petroleum gas
- Solvents
|
| Cross-Linked High Density Polyethylene (XLPE) | - Suitable for many corrosives not handled by FRP
- Natural/Yellow in color
- Storing corrosives, including sulfuric, hydrochloric and hydrofluoric acids
- Storing sodium hypochlorite
- Storing organic and inorganic chemicals and compounds
- Chemical processing
- Storing boiler treatment chemicals
- Water and wastewater treatment
| - Strong oxidizing agents
- Aromatic hydrocarbons
- Halogenated-aliphatic hydrocarbons
- Liquefied petroleum gas
- Solvents
|
| Polypropylene (PP) | - Good resistance to many organic chemicals
- Off-White in color
- Plating and pickling lines
- Sanitary process tanks
- Etch tanks for processing silicone wafers
| - Strong oxidizing agents
- Aromatic or chlorinated hydrocarbons
- Sub-freezing temperatures
|
| Polyvinylidene Fluoride (PVDF) | - Superior resistance to inorganic acids, strong oxidizing agents and halogenated compounds
- Off-White in color
- High-purity, does not contaminate process fluids
- Etch tanks for processing silicone wafers
- Ultra-pure water storage (not potable)
- Precious metal recovery
- Storing and processing halogenated compounds
- Storing bleach and sulfuric acid for pulp and paper processing
| - Ketones, esters and hot, concentrated caustics
- Nascent chlorine gas and concentrated caustic soda
|
Typical Properties
| Material Resin | General Chemical Resistance | Stress-Crack Resistance | Max. Service Temp. | Brittleness Temp. | Impact Resistance | Can Be Welded (HotGas) | Food-Grade Acceptability Natural, Unpigmented |
| HDPE | Very Good | Good | 140°F
60°C | -94°F
-70°C | Good | Yes | Yes
Natural
and Black |
| XLPE | Very Good | Excellent | 140°F
60°C | -180°F
-118°C | Excellent | No | No |
| PP | Very Good | Excellent | 220°F
104°C | 32°F
0°C | Fair | Yes | Yes |
| PVDF | Excellent | Excellent | 230°F
110°C | -40°F
-40°C | Fair | Yes | Yes |
