HDPE Machining Custom Machined Parts

Transforming High-Density Polyethylene into Precision Engineered Parts for Any Industry's Needs.

Introduction to HDPE

High-Density Polyethylene (HDPE) is a thermoplastic polymer made from the monomer ethylene. It is recognized for its high strength-to-density ratio, which makes it a highly durable and versatile material. HDPE is part of the polyethylene family, with a density greater than or equal to 0.941 g/cm³, making it denser and stronger than low-density polyethylene (LDPE).


Advantages of HDPE

  1. High Strength-to-Density Ratio: HDPE offers unmatched durability without adding weight, ideal for efficient, strong material applications in various industries.
  2. Impact Resistance: Exceptionally resistant to sudden impacts, HDPE ensures longevity and reliability in products prone to rough handling or conditions.
  3. Moisture Resistance: Impermeable to water, HDPE protects against rot, mold, and mildew, making it perfect for outdoor or wet-environment applications.
  4. Chemical Resistance: HDPE's resilience against a wide array of chemicals makes it suitable for containers and pipes in chemical processing industries.
plastic PTFE machining services

Benefits of HDPE Machined Parts

HDPE's robustness makes it perfect for machined parts, offering superior durability, impact resistance, and longevity. Its resistance to moisture and chemicals ensures functionality in harsh environments, while being lightweight reduces overall product weight. Economically, HDPE is cost-effective due to low material and maintenance costs. Additionally, its ease of machining allows for precise, custom parts, aligning with sustainability through recyclability.

  • Contact RALLY Today for Expert HDPE Machining Solutions Tailored to You.

RALLY's HDPE Machining Capabilities

RALLY specializes in processing a wide range of HDPE components to meet the diverse needs of a wide range of industries. Our capabilities include the production of precision-engineered gears, which are critical to the smooth operation of machinery; seals, which ensure leak-free piping and mechanical connections; and bushings, which provide reliable insulation and reduce wear between mechanical parts. 

At RALLY, a commitment to machining quality and precision is paramount to our operations. We utilize state-of-the-art CNC machining technology to ensure that every HDPE part we produce meets the highest standards of accuracy and finish. Our skilled machinists bring an unparalleled level of craftsmanship and attention to detail to ensure that every part is machined to exact specifications.

Throughout the production cycle, from material selection to final inspection, we adhere to strict quality control processes to ensure our customers receive parts that exceed their expectations. This dedication to excellence has made RALLY a leader in HDPE processing, providing our customers with reliable, high-performance parts that drive their success.

Automatic lathe centering machine

The Process of Custom HDPE Machined Parts

  1. Initial Consultation and Design: RALLY begins with a detailed consultation to understand client needs, followed by designing parts using advanced CAD software, ensuring tailored solutions for specific applications.
  2. Prototyping and Testing: We create prototypes to test design efficacy, allowing for adjustments. This critical step ensures the final product meets all functional and aesthetic requirements.
  3. Precision Machining: Utilizing state-of-the-art CNC technology, RALLY produces HDPE parts with unmatched precision, adhering to stringent specifications for quality and durability.
  4. Quality Control and Delivery: Each part undergoes rigorous quality checks to guarantee adherence to client specifications before safe and timely delivery, completing the customized production cycle.
PEEK Machining:Initial Consultation and Design
PEEK Machining:Prototyping and Testing
PEEK Machining:Precision Machining
PEEK Machining:Quality Control
Bring Your Designs to Life with RALLY's Precision HDPE Machining

The Machining Process at RALLY

  1. Design: At RALLY, the process begins with a collaborative design phase, utilizing CAD tools to create precise blueprints that reflect the client's specifications and the part's intended function, ensuring a solid foundation for the machining process.

  2. Material Selection: Careful selection of HDPE material is crucial, considering factors such as density, durability, and resistance properties. RALLY chooses the most appropriate grade of HDPE to match the part's specific requirements for performance and longevity.

  3. Machining: Utilizing advanced CNC machining technology, RALLY transforms raw HDPE into precise components. This step involves detailed programming and operation of machinery to accurately cut, mill, and shape the material according to the design specifications.

  4. Finishing: Post-machining, parts undergo various finishing processes such as deburring, polishing, or painting to enhance appearance, improve functionality, and meet any additional client requirements, ensuring the final product is ready for use.

  5. Inspection: The final step in RALLY's process is a thorough inspection of each machined part. Using precision measurement tools, the parts are checked against the original specifications to ensure quality, accuracy, and client satisfaction before delivery.

HDPE Material
CNC Machining HDPE Parts
HDPE machined part
Inspection for HDPE Machined parts

Industries Served

RALLY's expertise in HDPE machining serves a wide range of industries, each benefiting from the unique properties of HDPE parts. Here are some key industries and the applications of machined parts within them:

HDPE Industry application


  • Description: The automotive industry requires durable, lightweight components to improve vehicle efficiency and longevity.
  • Applications: HDPE parts are used for fuel tanks, ventilation systems, and various under-hood components, offering resistance to chemicals and low moisture absorption.


  • Description: Aerospace demands materials that can withstand extreme conditions while minimizing weight to enhance performance.
  • Applications: HDPE is utilized for non-structural components such as interior cabin fittings and insulation components, contributing to weight reduction and fuel efficiency.

Consumer Goods

  • Description: This industry encompasses a broad range of products requiring materials that are safe, durable, and cost-effective.
  • Applications: HDPE machined parts are found in household appliances, toys, and outdoor furniture, valued for their strength, safety, and resistance to environmental stressors.


  • Description: Medical equipment and devices require materials that are safe, sterilizable, and biocompatible.
  • Applications: HDPE is used for labware, containers, and components in medical devices, prized for its chemical resistance and cleanliness.


  • Description: Electronics require precision components that can insulate and protect delicate circuits.
  • Applications: HDPE parts are utilized for insulating components, enclosures, and mounts, offering electrical insulation, durability, and protection against static discharge.

Through RALLY's HDPE machining capabilities, these industries benefit from custom parts that meet their specific needs, enhancing product performance, safety, and sustainability.

  • Start Your HDPE Machining with RALLY!

Advantages of Partnering with RALLY for HDPE Machining

  1. Quick Turnaround Times: RALLY excels in delivering projects within tight deadlines without compromising quality. Our efficient processes and skilled workforce enable rapid production cycles, ensuring clients receive their custom HDPE parts swiftly, keeping projects on schedule.

  2. High-Quality Production: At RALLY, quality is paramount. We utilize advanced CNC technology and rigorous quality control measures to produce HDPE parts that meet the highest standards of precision and durability, ensuring superior performance in their applications.

  3. Cost Efficiency: Leveraging optimized machining processes and material utilization, RALLY provides cost-effective HDPE machining solutions. Our expertise allows for minimal waste and efficient production, offering clients high-quality parts at competitive prices, maximizing their investment.

  4. Expertise and Customer Support: RALLY's team of experienced engineers and machinists work closely with clients from design to delivery, offering technical support and guidance. This partnership approach ensures that every HDPE part is perfectly tailored to meet specific client needs and application requirements.

Advantages of Partnering with RALLY for HDPE Machining
  • Transform Your Ideas into Reality with RALLY's Custom HDPE Parts.

Getting Started with Your HDPE Project at RALLY

Embarking on your HDPE machining project with RALLY is a straightforward process designed to bring your vision to reality efficiently and effectively. Whether you're in the conceptual stage or ready for production, we're here to guide you every step of the way.

1. Reach Out to Us: Begin your journey by contacting our dedicated team. You can reach us through our website's contact form, send us an email, or give us a call. We're ready to listen to your needs, ideas, and challenges.

2. Consultation: After initial contact, we'll schedule a detailed consultation. This is where we dive deeper into your project's specifics, understand your requirements, and discuss possible solutions. Our experts are here to provide advice, answer questions, and outline the next steps.

3. Project Evaluation and Quote: Based on our consultation, our team will evaluate your project's needs and provide a comprehensive quote. We aim for transparency in our pricing and timelines, ensuring you have all the information needed to make informed decisions.

4. Design and Production: Once you're ready to proceed, our engineers and designers will work closely with you to finalize designs and move into production. Throughout this process, we maintain open lines of communication, keeping you updated and involved.

Ready to transform your ideas into reality?

Click here to send us your project inquiry now!

Learn more about our other plastic machining

At RALLY, our expertise isn't limited to HDPE. We offer a comprehensive suite of plastic machining services, utilizing materials like Nylon, Acrylic, PEEK, and Polycarbonate. With our advanced technology and skilled technicians, we can realize your projects with precision and quality, regardless of the plastic type.

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Delrin machining

Acrylic Machining

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PTFE machining

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plastic machining turning parts NYLON PA66 _副本

Nylon Machining

Quality Assurance

Quality assurance (QA) is crucial in the manufacturing of machined parts, ensuring that each piece meets strict standards for performance, durability, and safety.

1. Roughness Measurement

Purpose: Evaluates surface texture to ensure components meet specifications for friction, sealing, and overall performance. Critical for product longevity and reliability.

2. Hardness Testing

Purpose: Determines the resistance of a material to deformation or penetration. Essential for assessing wear resistance and durability in service environments.

3. Height Measurement

Purpose: Verifies part dimensions against design specifications. Crucial for ensuring parts fit together accurately, maintaining product integrity and functionality.

4. 2D Measurement

Purpose: Offers precise 3D measurements of a part's geometry. Essential for verifying complex shapes and dimensions, ensuring high precision and quality.

5. Coordinate Measuring Machine (CMM)

Purpose: To perform comprehensive three-dimensional measurements of the bike stem, checking for precise adherence to geometric tolerances and specifications.

Roughness Measurement
Hardness Testing
Inspection of wavegudie flange
Quality Inspection 2

Packaging and Shipping


Every item is individually packaged, with cardboard placed beneath the carton. The products are encased in a 5-layer thickened cardboard box, sealed with packing tape, then loaded into wooden crates and secured on pallets for shipping, ensuring the parts remain intact and clean.

packaging of bike stem


  • DHL/UPS/FEDEX Express: Speed: 4-6 working days. Best for: Samples or small quantities.
  • Air Freight: Speed: 8-15 days. Best for: small orders.
  • Ocean Freight: Speed: 15-40 days. Best for: Bulk orders.
  • Railroad Transportation: Speed: faster than ocean freight, slower than air freight. Best for: bulk orders that do not require high speed.
Express Shipping
air transportation
Ocean Freight
Railway express

Request a Quote

Looking for a custom solution? Our quote request process is straightforward and accessible.

Simply fill out our online form with your project details, and a member of our team will get back to you promptly to discuss your project in detail and provide a comprehensive quote.

Click or drag files to this area to upload. You can upload up to 6 files.
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