HDPE (High Density Polyethylene) is a versatile thermoplastic polymer made from petroleum, characterized by its exceptional strength-to-density ratio. As one of the most widely used engineering plastics, HDPE material offers outstanding chemical resistance, impact strength, and moisture barrier properties, making it ideal for demanding industrial applications.

HDPE plastic features a crystalline structure with minimal branching, resulting in superior mechanical properties compared to low-density polyethylene (LDPE). This molecular structure gives HDPE its characteristic stiffness, durability, and excellent wear resistance - perfect for precision machined components, structural parts, and high-stress applications.

Core Properties of HDPE Material

• High Impact Resistance: Withstands shock and impact without cracking, ideal for protective equipment and machinery parts
• Excellent Chemical Resistance: Inert to most acids, bases, alcohols, and hydrocarbons - perfect for chemical processing equipment
• Low Moisture Absorption: Less than 0.01% water absorption, maintaining dimensional stability in humid environments
• Superior Wear Resistance: Low coefficient of friction (0.2-0.3) reduces mechanical wear in sliding applications
• FDA Compliant Grades Available: Food-safe HDPE for cutting boards, food processing equipment, and beverage containers
• Wide Temperature Range: Performs reliably from -40°C to 90°C (-40°F to 194°F) in continuous use
• Excellent Machinability: Easy to cut, drill, mill, and weld using standard fabrication techniques
• UV Resistance (optional): UV-stabilized grades available for outdoor and marine applications

HDPE Sheets & Plates

High-density polyethylene sheets available in various thicknesses from 1mm to 100mm+. Perfect for CNC machining, thermoforming, and fabrication into custom parts.

HDPE Rods & Bars

Precision-extruded HDPE rods ideal for CNC turning operations. Excellent for manufacturing bushings, spacers, rollers, and custom cylindrical components.

1. Submit Design

Upload CAD files or drawings

2. Receive Quote

24-hour response with pricing

3. Production

Precision machining & fabrication

4. Delivery

Quality inspection & shipping

CNC Machining HDPE

Multi-axis CNC milling and turning for complex HDPE components with precision tolerances down to ±0.03mm (±0.0012").

• 3-axis, 4-axis, 5-axis CNC machining centers
• CNC turning for cylindrical HDPE parts
• Thread milling and tapping operations
• Surface finish: Ra 0.8-3.2 μm achievable
• Prototype to high-volume production

Laser Cutting & Engraving

CO2 laser cutting for intricate shapes and patterns in HDPE sheets with clean edges and minimal heat-affected zones.

• Laser power: up to 300W for thick HDPE
• Cutting speed: optimized for each thickness
• Intricate 2D shapes and complex profiles
• Laser engraving for logos and markings
• Kerf width: 0.1-0.3mm precision

HDPE Welding & Joining

Expert plastic welding techniques for creating leak-proof HDPE tanks, ductwork, and large fabricated assemblies.

• Hot gas welding with nitrogen or air
• Extrusion welding for thick sections
• Butt fusion welding for pipes and rods
• Socket fusion for fittings assembly
• Non-destructive testing available

Thermoforming & Heat Bending

Controlled heating and forming processes to create curved, domed, or 3D-shaped HDPE components from flat sheets.

• Vacuum forming for complex shapes
• Pressure forming for tight tolerances
• Line bending for angular parts
• Drape forming for large panels
• Custom molds and tooling fabrication

HDPE Injection Molding

High-volume production of HDPE parts using precision injection molding for consistent quality and cost-effective manufacturing.

• Tonnage range: 80-500 tons
• Mold design and fabrication services
• Insert molding and overmolding
• Prototype to mass production runs
• Post-molding finishing and assembly

Precision Cut-to-Size

Fast and accurate cutting services for HDPE sheets and rods to your exact specifications with tight dimensional tolerances.

• Precision sawing: ±0.5mm accuracy
• Panel sizing and edge trimming
• Router cutting for complex contours
• Hole drilling and countersinking
• No minimum order quantity

Precision Manufacturing

Advanced CNC equipment achieving tolerances down to ±0.03mm (±0.0012") for critical components. Multi-axis machining centers handle complex geometries with consistent accuracy.

Fast Turnaround

24-hour quotations on most projects. Expedited production available for urgent requirements. Standard lead times: 5-10 business days for machined parts, immediate shipping on stock materials.

Quality Assurance

Rigorous inspection processes at every stage. SGS-tested materials with documented properties. First article inspection (FAI) reports available. Dimensional verification using CMM equipment.

No Minimum Order

Order exactly what you need - from single prototypes to high-volume production runs. Free standard shipping available to select regions. Volume discounts on large orders.

Global Shipping

Worldwide delivery with secure packaging and tracking. Partnered with major carriers for reliable logistics. Export documentation and customs support included for international orders.

Technical Expertise

Experienced engineering team provides DFM (Design for Manufacturability) feedback. Material selection guidance and application consulting. Support from design to production.

✓ Certified Reports: SGS test reports available upon request (Reference: SZIN2307001605PL02_EN, GZMR230702150402)

✓ Food Grade Testing: Compliant with GB 4806.7-2016 standards (Reference: SZIN2101000939SC-01_CN)

What is the difference between HDPE and LDPE?

HDPE (High Density Polyethylene) has a density of 0.941-0.965 g/cm³ with minimal branching, resulting in superior strength, stiffness, and chemical resistance. LDPE (Low Density Polyethylene) has more branching (density 0.910-0.940 g/cm³), making it more flexible but less rigid. For structural applications, precision machining, and chemical resistance, HDPE is the preferred choice.

Can HDPE be used for food contact applications?

Yes, food-grade HDPE is widely approved for food contact by regulatory agencies including FDA (21 CFR 177.1520) and European standards (EU 10/2011). Our HDPE materials have been tested according to GB 4806.7-2016 standards showing compliance for food safety. HDPE is non-toxic, doesn't leach chemicals, and is ideal for cutting boards, food containers, and processing equipment.

What chemicals is HDPE resistant to?

HDPE exhibits excellent resistance to: acids (sulfuric, hydrochloric, nitric), bases (sodium hydroxide, potassium hydroxide), alcohols (methanol, ethanol), detergents, saline solutions, and most aqueous solutions. Limited resistance to: oxidizing acids, aromatic hydrocarbons, and chlorinated solvents at elevated temperatures. Contact us for specific chemical compatibility data.

What is the maximum operating temperature for HDPE?

HDPE has a continuous service temperature of approximately 90°C (194°F) in air and 80°C (176°F) in hot water. The melting temperature is around 120-135°C (248-275°F). The Heat Deflection Temperature (HDT) at 1.8 MPa is 80°C (176°F). For higher temperature requirements, consider materials like PP, PEI, or PEEK.

How do you machine HDPE plastic?

HDPE machines well using standard techniques: CNC milling (use sharp carbide tools, moderate speeds 200-400 m/min), CNC turning (feed rate 0.1-0.3 mm/rev), drilling (standard HSS or carbide drills), and sawing. Use coolant or air to prevent chip welding. HDPE can also be laser cut, thermoformed, and welded. Our precision tolerance is ±0.03mm (±0.0012") for critical dimensions.

Should I choose HDPE or UHMWPE for my application?

Choose HDPE when cost-effectiveness, chemical resistance, and moderate mechanical properties are sufficient (tensile strength ~30 MPa, moderate wear resistance). Choose UHMWPE for extreme wear resistance, self-lubricating properties, and exceptional impact strength (10x better wear resistance than HDPE). UHMWPE is ideal for conveyor guides, chute liners, and high-wear sliding applications. Learn more →