O We implemented ISO 9001:2015 quality certification management system
O Mould precision up to 0.002mm
O 100% inspection on all products and strictly controls the quality
In modern manufacturing, precision mould systems are essential for producing high-quality components with tight tolerances and consistent performance. Donglong Mold specializes in manufacturing precision mold components, including punch pins, ejector pins, and core pins, designed for use in precision plastic injection moulding, die casting, and metal stamping applications.
As critical precision mould parts, these industrial pins and punches directly affect mold accuracy, cycle efficiency, and the quality of finished products.
In precision plastic injection moulding, even minor dimensional deviations can lead to defects in precision plastic parts. Donglong Mold’s precision mould tools are engineered to maintain micron-level accuracy, ensuring stable molding performance throughout long production cycles.
Our industrial pins & punches function as key forming, ejecting, and positioning elements within:
Precision mould tools
Punch Dies and Punch Case assemblies
Multi-cavity and high-speed injection molds
To meet the stringent requirements of precision mould manufacturing, our precision mold components are produced using carefully selected materials:
High-speed steel (HSS), such as SKH51
DIN 9861 standard tool steel
Carbide pins for high-wear applications
Tungsten carbide pins and tungsten pins for extreme load and long-cycle usage
These materials provide the hardness, thermal stability, and wear resistance required in precision mould parts and high-performance industrial pins.
All industrial pins and punches are manufactured using advanced CNC machining and precision grinding technologies. Tight dimensional control ensures reliable fit and alignment within precision mould tools.
Optional surface treatments include:
Wear-resistant coatings
Corrosion-resistant finishes
Low-friction surface layers
These enhancements significantly improve the durability of custom metal pins, particularly in molds producing high-volume precision plastic parts.
Different mould structures require different pin geometries. Donglong Mold offers fully custom pins and custom die cut pins designed to integrate seamlessly into complex precision mould designs.
Available configurations include:
Stepped punch pins
Shoulder punches
Tapered and straight core pins
Ejector pins for thin-wall precision plastic injection moulding
Specialized pins for Punch Dies and Punch Case systems
These custom pins enable accurate forming, clean hole creation, and smooth ejection in demanding mold environments.
Our precision mould parts ensure stable cavity geometry and smooth part ejection, supporting the production of high-quality precision plastic parts.
High-strength industrial pins & punches and Punch Dies deliver reliable performance under high pressure and temperature conditions.
In aerospace tooling, aerospace pins and tungsten carbide pins are essential for achieving consistent accuracy in safety-critical components.
Micron-level dimensional accuracy
Long service life in high-cycle production
Compatibility with complex precision mould tools
Support for custom metal pins and custom die cut pins
Reduced mold maintenance and downtime
These advantages position Donglong Mold as a reliable supplier of precision mold components and industrial pins and punches.
With extensive experience in precision mould manufacturing, Donglong Mold provides tooling solutions that meet the highest industry standards. From standard industrial pins to fully customized precision mould parts, every product is designed to support efficient, high-quality production.
Whether used in precision plastic injection moulding, die casting, or advanced Punch Case assemblies, our precision mould tools deliver consistent, repeatable performance.
High-quality precision mold components are the backbone of reliable mould systems. By combining premium materials, advanced machining, and flexible customization, Donglong Mold supplies industrial pins & punches, custom pins, and precision mould tools that enhance mold accuracy, extend tool life, and improve the quality of precision plastic parts.
Choosing the right industrial pins, carbide pins, or tungsten carbide pins is a decisive factor in achieving long-term success in precision manufacturing.
Precision mould components are high-accuracy parts used inside a precision mould system, including punch pins, ejector pins, core pins, Punch Dies, and Punch Case assemblies. These components ensure accurate forming, smooth ejection, and consistent production of precision plastic parts and metal components.
In a precision mould, industrial pins and punches are responsible for forming holes, shaping internal features, and ejecting finished parts. As part of industrial pins & punches systems, they operate under high pressure and tight tolerances, directly affecting mold accuracy and product consistency.
High-quality precision mould parts are typically manufactured from:
High-speed steel (HSS) such as SKH51
DIN 9861 standard tool steel
Carbide pins for high-wear environments
Tungsten carbide pins and tungsten pins for extreme load and long-cycle applications
Material selection depends on the forming process, cycle volume, and mold operating conditions.
Tungsten carbide pins offer exceptional hardness, wear resistance, and dimensional stability. These properties make them ideal for precision mould tools used in high-speed precision plastic injection moulding and demanding die casting applications.
Yes. We specialize in custom pins, including custom metal pins and custom die cut pins, tailored to unique precision mould requirements. Custom geometries such as stepped pins, shoulder punches, and tapered core pins ensure perfect integration into complex mold structures.
In precision plastic injection moulding, ejector pins ensure smooth and controlled removal of finished precision plastic parts from the mold cavity. High-precision industrial pins reduce surface defects, deformation, and cycle interruptions.
Precision mould tools maintain tight dimensional control, stable cavity alignment, and repeatable motion throughout production. This consistency results in higher-quality precision plastic parts, lower scrap rates, and improved overall manufacturing efficiency.
Yes. Industrial pins & punches are designed for high-cycle, high-volume production. Using premium materials such as carbide pins and tungsten pins, they maintain accuracy and performance even under continuous operation.
To extend service life, precision mould parts may feature:
Wear-resistant coatings
Corrosion-resistant treatments
Low-friction surface finishes
These treatments are especially beneficial for custom pins and industrial pins used in abrasive or high-temperature environments.
Precision mould components and industrial pins and punches are widely used in:
Precision plastic injection moulding
Automotive manufacturing
Aerospace tooling (aerospace pins)
Electronics and medical device production
Each industry relies on high-precision tooling for consistent and reliable results.
Punch Dies and Punch Case assemblies house and support industrial pins & punches, ensuring accurate alignment and controlled movement during forming and stamping processes. Proper integration improves tool stability and extends mold life.
Selecting the correct precision mould parts depends on:
Mold type and structure
Operating temperature and pressure
Production volume
Required tolerance and surface finish
For complex applications, engineered custom pins and specialized precision mould tools are recommended.
For 27 years, Donglong has been focusing on the design, development and manufacture of precision screw molds.
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