Engineering Plastic

HDPE High Density Polyethylene

Wear · Load · Precision machining

Get A Quote Call 07 5564 6744

±0.1mm

Precision Tolerance

35+ Years

On The Gold Coast

Full Range

Perspex, HDPE & More

Australia-Wide

Fast Delivery

HDPE is a very rigid material for use in general plant engineering, tank construction and waste water industries. Where all round chemical resistance and weather ability is required.

HDPE is one of the most versatile engineering plastics available, combining excellent chemical resistance with good impact strength and abrasion resistance. Black HDPE grades contain UV stabilisers making them suitable for outdoor applications including water tanks, playground equipment, and marine fittings.

⚙Technical Specifications

Material Type

HDPE (High Density Polyethylene)

Specific Gravity

0.95

Tensile Strength

~25 MPa

Impact Strength

Good

Continuous Service Temp

−45°C to 100°C

Water Absorption

0.01%

UV Resistance

Black grade — UV protected

Chemical Resistance

Excellent (acids, salts, alcohols, oils)

Abrasion Resistance

Excellent

Electrical Insulation

Very Good

FDA Approved

Yes (natural/white grades)

Quick Facts

✓ Over 35 years experience
✓ No minimum order
✓ Fast turnaround
✓ Australia-wide delivery

Get A Free Quote (07) 5564 6744

Chemical Resistance

HDPE is resistant to Acids, Salts & salt solutions, Alcohols, oils, fats, waxes & many solvents. All PE material is affected by strong oxidizing agents such as nitric acid, chromic acid or halogens.

Applications

Machine guards and industrial covers

Water tanks and chemical storage tanks

Cutting boards and food processing surfaces

Pipe fittings and component parts

Playground equipment

Marine components — bait boards, fish boxes

Large black HDPE water storage tank fabricated from welded high density polyethylene sheet — HDPE Water & Chemical Tanks

Black HDPE marine bait board with stainless rod holders mounted to a fishing boat gunwale — Marine Bait Boards & Boat Fittings

HDPE machine guard panels enclosing a CNC machining centre on a Gold Coast factory floor — CNC & Industrial Machine Guards

Outdoor playground built from colour-through HDPE panels with slides, climbing walls and shade roofs — Playground & Outdoor Equipment

Available Sizes

We sell HDPE in both sheet and rod form, cut to size on request.

Form	Sheet Size	Thickness Range	Colours
Sheet	2000 x 1000mm	1mm – 100mm	Natural / White, Black (UV)
Sheet	3000 x 1500mm	1mm – 100mm	Natural / White, Black (UV)
Sheet	4000 x 2000mm	1mm – 100mm	Natural / White, Black (UV)
Rod	1 metre lengths	10mm – 300mm diameter	Black

Cut to size service available on all sheet thicknesses. Larger sheet sizes and custom rod lengths available on request.

Fabrication & Processing

HDPE machines very well and can be welded using hot air or extrusion welding techniques. It can be CNC routed, saw cut, drilled, and turned on a lathe. HDPE cannot be solvent bonded — use hot air welding or mechanical fasteners.

CNC machining — produces clean edges, no coolant required

Hot air welding — for tank fabrication and structural joints

Extrusion welding — for thick section butt joints

Bending — can be heat bent with a strip heater

Drilling — use sharp HSS bits with positive rake angle

Frequently Asked Questions

What is HDPE typically used for?+

HDPE is one of the most versatile engineering plastics we supply. Common uses include cutting boards and food processing surfaces, water and chemical storage tanks, machine guards, marine fittings (bait boards, fish boxes, hatches), playground equipment, pipe fittings, abrasion liners, and general fabricated parts where chemical resistance and impact strength are needed.

How well does HDPE perform outdoors and in UV?+

Black HDPE is UV stabilised and well suited to long-term outdoor use — water tanks, marine fittings, and exterior signage all run on black grade. Natural and white HDPE are not UV stabilised and will chalk and become brittle if left in direct sunlight. For any external application, specify black HDPE.

What welding methods can I use on HDPE?+

HDPE cannot be solvent bonded — its low surface energy makes adhesives unreliable. The proper joining methods are hot air welding (for tank fabrication and structural seams), extrusion welding (for thick-section butt joints), butt fusion (for pipe and heavy plate), and mechanical fastening with stainless screws, rivets or bolts. We can recommend a fabricator if you need welded HDPE work.

What are the lead times for cut-to-size HDPE?+

Standard cut-to-size orders from stock sheet are typically ready within 1–2 business days. Larger jobs, full sheet routing, or non-stock thicknesses may take 3–5 business days. Call us on (07) 5564 6744 with your sizes and we'll confirm a firm lead time and quote.

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