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Plastic Auto Bike Frame Injection Molding

Plastic Auto Bike Frame Injection Molding

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Mold Making & Plastic Injection One-stop Service

Yuyao Hualong Moulds & Plastic Products Co.,Ltd.

Yuyao Hualong Moulds & Plastic Products Co.,Ltd. was established in 1988. At present, there are 15 plastic injection molding machines from 100g to 3500 g, more than 20 mold manufacturing equipment such as machining centers, and more than 20 testing equipment and other auxiliary equipment. As leading Plastic Injection Molded Auto Bike Frame manufacturers and Auto Bike Frame factory in China, We have 100 employees and more than 30 managers and professional technicians.

After over 30 years of indomitable efforts, with the molds-making and plastic products-processing as the mainstay, our company has implemented a service for product development, mold-designing and making, plastic injection-molding and finished product-assembly in a coordinated process. Hualong mold has long history of serving European and American high-quality brands and well-known public companies at domestic and abroad. We custom make injection molded Plastic Auto Bike Frame. Customized products involve all kinds of instruments, equipment accessories, industrial automation and intelligent equipment of the Internet of things, auto accessories, kitchen appliances, household products, etc. Products are widely used in power, communications, security, automotive, aerospace, medical, life and other different fields.

We have gained certifications of ISO9001, ISO16949 quality management system and ISO14001 environmental management system. OEM/ODM plastic injection molded Auto Bike Frame. We accept annual factory inspection of clients, and conduct ECOVADIS audits on environment, labor and human rights, business ethics and sustainable procurement.

Customized Service Custom Advantage

Custom Process

  • Drawings or Samples

    We get the drawings or samples from customers.

  • Drawings Confirmation

    We will draw the 3D drawings according to the customers' 2D drawings or samples,and send the 3D drawings to customers for confirmation.

  • Quotation

    We will quote after getting the customers' confirmation,or quote directly according to customers' 3D drawings.

  • Making Molds/Patterns

    We will make molds or pattens after getting the mold orders from the customers.

  • Making Samples

    We will make real samples using the molds and send to customers for confirmation.

  • Mass Producing

    We will produce the products after getting the customers' confirmation and orders.

  • Inspection

    We will inspect the products by our inspectors or ask the customers to inspect together with us when finished.

  • Shipment

    We will ship the goods to the customers after getting the inspection result ok and the customers' confirmation.

Every certificate witnesses our profession


  • ISO45001
  • ISO14001 Environmental Management System Certification
  • IATF16949 Automotive Industry Quality Certification
  • ISO9001 Quality Management System Certification
  • Sustainability Rating
  • POM F20-02 ROHS SGS Report

Develop customized mold products according to customer requirements

Comprehensive analysis of projects, high degree of cooperation with customers, strong timeliness, good follow-up service and stable production.

Learn about customization
Industry Knowledge

What are the benefits of using plastic injection molding for auto bike frame production?

There are several benefits of using plastic injection molding for auto bike frame production:

1. Cost-effective: Plastic injection molding can produce high-quality, complex bike frames at a lower cost than other manufacturing methods, such as metal fabrication.

2. Lightweight: Plastic bike frames are much lighter than their metal counterparts, which makes them easier to handle and maneuver. This is especially important for bike enthusiasts who are looking for a lighter, more agile ride.

3. Durable: Plastic injection molding can produce bike frames that are highly durable and resistant to impact, which is important for riders who want a bike that can withstand the wear and tear of regular use.

4. Design flexibility: Plastic injection molding allows for a high degree of design flexibility, which means that bike frames can be customized to meet specific performance and aesthetic requirements. This is particularly useful for manufacturers who want to create bikes with unique shapes and features.

5. Reduced production time: Plastic injection molding is a fast and efficient manufacturing process, which means that bike frames can be produced in large quantities in a relatively short amount of time. This is important for manufacturers who need to meet tight production deadlines.

Overall, plastic injection molding offers a range of benefits for auto bike frame production, including cost-effectiveness, lightweight, durability, design flexibility, and reduced production time.

Which plastic materials are commonly used for auto bike frame injection molding?

The plastic materials commonly used for auto bike frame injection molding include:

1. Polypropylene (PP): PP is a versatile plastic that is widely used in injection molding due to its low cost, good chemical resistance, and excellent impact strength.

2. Polyamide (PA): PA, also known as nylon, is a strong and durable plastic that is commonly used for bike frames due to its high stiffness, impact resistance, and fatigue endurance.

3. Acrylonitrile Butadiene Styrene (ABS): ABS is a lightweight, durable plastic that is commonly used for bike frames due to its high impact resistance, good dimensional stability, and excellent surface finish.

4. Polycarbonate (PC): PC is a strong, lightweight plastic that is commonly used for bike frames due to its excellent impact resistance, good dimensional stability, and high clarity.

5. Thermoplastic elastomers (TPE): TPEs are a group of flexible plastics that are commonly used for bike frame components, such as grips and saddles, due to their high flexibility, good grip, and soft touch.

The choice of plastic material depends on the specific performance and aesthetic requirements of the bike frame, as well as the manufacturing process and cost considerations.

What are the design considerations for injection molding auto bike frames?

There are several design considerations that should be taken into account when designing auto bike frames for injection molding. These include:

1. Wall thickness: The wall thickness of the bike frame should be uniform and optimized to ensure that the frame is strong and durable while minimizing material usage and production costs.

2. Draft angles: Draft angles are the angles at which the sides of the bike frame taper. Proper draft angles are necessary to ensure that the bike frame can be easily removed from the mold without damaging the part or the mold.

3. Rib design: Ribs are used to add strength and rigidity to the bike frame. They should be designed to be as thin as possible, while still providing the necessary support.

4. Parting line: The parting line is the line where the two halves of the mold meet. It is important to design the bike frame so that the parting line does not interfere with the functionality of the frame.

5. Gate location: The gate is the point where the molten plastic is injected into the mold. It is important to choose the gate location carefully to ensure that the plastic flows smoothly and evenly throughout the mold cavity, without creating voids or other defects.

6. Undercuts: Undercuts are features on the bike frame that prevent it from being easily removed from the mold. Special design considerations are necessary to ensure that these features can be easily removed from the mold without damaging the part.

Overall, designing auto bike frames for injection molding requires careful consideration of a range of factors, including wall thickness, draft angles, rib design, parting line, gate location, and undercuts, in order to ensure that the final product is both functional and manufacturable.

  • Where are your products mainly exported to?
    Our products are mainly exported to the United States, Canada, the Netherlands, France, Italy, the United Kingdom, South Korea, and other dozens of countries.
  • How to deliver the goods to us?
    Foreign customers usually ship by sea. We are only 80 kilometers away from Ningbo Port, so it is very convenient to export by sea. Of course, if the customer's goods are urgent, we can also ship by air. Ningbo Airport and Shanghai International Airport are very close to us.
    Domestic customers, we have our own van and driver to arrange delivery.
  • How many employees of your comany? What about the technicists?
    The company has more than 100 employees, including more than 30 managers and professional and technical personnel.
  • How about the capacity of your company?
    The company covers an area of 9,000 square meters, with a modern workshop of more than 8,000 square meters. We currently have thirteen plastic injection molding machines ranging from 100 grams to 3500 grams, and more than ten mold manufacturing equipment such as machining centers, with an annual production capacity of 80 million yuan.
  • Do you have some standard parts?
    No, we are a pure custom manufacturer.
  • Can you do customized products?
    Yes, we mainly do customized products,we are mainly doing customized products according to the customers’ drawings or samples.
  • What applications do your products relate to?
    Our products cover almost every aspect of your life. Products have been involved in instrumentation, auto parts, medical equipment, smart equipment, audio-visual office supplies, fitness equipment, small kitchen appliances and many other industries.
  • What products can you offer?
    We mainly accept the customization of injection molds and the production of corresponding products.
  • Are you a direct manufacturer or a trading company?
    We are a professional manufacturer of customized injection molds and injection products. We also accept orders from domestic and foreign customers and have the right to export independently.
  • How to guarantee the quality of your goods?

    Firstly,we will do the inspection after every process.for the finished products,we will do 100% inspection according to the customers’ requirements and the international standard.

    Then, we have the more advanced and complete testing equipment in the industry: color detectors, three-coordinate measuring instruments, 3d scanners, etc. To ensure that the customer's all-round testing requirements for product color, high-precision geometric size testing, etc. are met.

    In addition, we have a professional team to do a complete technical analysis in advance. According to the needs of different materials, shapes and performances of the products, we will make corresponding molds or increase the necessary technological processes such as cooling and boiling to ensure that the product performance and shape meet the requirements of customers and reduce follow-up troubles.

  • What’s the payment term?
    When we quote for you,we will confirm with you the way of transaction,fob,cif,cnf,etc.
    For mass production goods, you need to pay 30% deposit before producing and70% balance against copy of documents. the more common way is by t/t. l/c is also acceptable.
  • How long can I get the feedbacks after we sent the inquiry? 
    We will reply you within 12 hours in working day.