The "300" refers to the molecular weight of the polymer. PE300 is a high-density polyethylene with a molecular weight of approximately 300,000 g/mol. This is considered the "standard" grade of HDPE, sitting below PE500 (HMWPE) and PE1000 (UHMWPE) in terms of molecular chain length and wear resistance.

Yes. PE300 is naturally physiologically safe and typically complies with FDA and EU food contact regulations.
It is widely used for food processing equipment, meat preparation surfaces, and storage containers because it does not leach chemicals and is easy to sanitise.

Absolutely. In fact, one of the primary reasons for choosing PE300 over higher grades (like PE1000) is its excellent weldability.
PE300 can be joined using hot gas welding, butt fusion, or extrusion welding. This makes it the industry standard for fabricating large-scale chemical tanks and ducting.

Standard natural (white/opaque) or bright-coloured HDPE is not inherently UV stable and may become brittle over time when exposed to direct sunlight.
 However, Black PE300 usually contains carbon black additives which provide excellent UV protection, making it suitable for long-term outdoor applications.

While both are polyolefins, PE300 has better impact strength (especially at low temperatures) and is more flexible.
Polypropylene (PP) has higher scratch resistance and a higher melting point, making PP better for applications involving boiling water or high heat, whereas HDPE is superior for cold-weather durability.

Generally, no. While PE300 has good sliding properties, it has lower wear resistance and a lower load-bearing capacity than PE1000 (UHMWPE). For high-friction environments or heavy-duty conveyor wear strips, a higher molecular weight grade is recommended to prevent premature failure.

HDPE is a "low surface energy" plastic, meaning standard glues and adhesives struggle to "wet" the surface and bond to it. While specialised acrylic adhesives exist, they often require expensive primers or flame-treating the surface.
Mechanical fastening (screws, bolts) or thermal welding are the preferred methods for joining PE300.

HDPE has a water absorption rate of less than 0.01%. This makes it exceptionally dimensionally stable in wet environments. Unlike Nylon (Polyamide), it will not swell or change its mechanical properties when submerged.

PE300 can withstand a maximum long-term service temperature of approximately 80°C. For short periods, it can handle slightly higher temperatures, but it will begin to soften and lose structural integrity.
If your application exceeds 100°C, a different material like PTFE or PVDF should be considered.

HDPE is highly recyclable. Designated by the number "2", HDPE is widely accepted in curbside recycling programs. 
Collected HDPE is cleaned, shredded, melted, and processed into small pellets, which are then used to manufacture secondary products such as drainage pipes or plastic lumber.