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Bathroom Hardware, Grinding & Polishing Solutions

Intelligent Automation for Faucets, Showers, and Sanitary Ware Manufacturing

About Dingzhu Intelligent Equipment

We are a comprehensive enterprise specializing in intelligent equipment manufacturing, processing, sales, maintenance, and technology research and development. Leading in the design and manufacture of automated equipment for faucet production, sanitary ware, bathroom fixtures, metal steel products, hardware accessories, auto parts, door lock industry parts, and the new energy industry.

Xiamen Dingzhu Intelligent Equipment Co., Ltd. specializes in the R&D, production, and service of automatic Low Pressure Die Casting Machines (LPDC), Robotic Cell Grinding and Polishing machines, Robotic Deburring Solutions, CNC Polishing Machines, Sand Core Shooting Machines, Gravity Die Casting Machines, and Automatic CNC Sprue Cutting Machines.

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Full-Process Sanitary Automation Solutions

We specialize in providing full-process automation equipment for faucets, showers, angle valves, sanitary fittings, toilet covers, and other sanitary products. Our technology covers the entire lifecycle from casting to fine polishing, enhancing product precision, surface finish, and production efficiency.

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Intelligent Casting

Our Low Pressure Die Casting (LPDC) and Gravity Die Casting machines ensure high-density, porosity-free brass and alloy bodies for faucets and mixers.

  • Precise Temperature Control
  • High Mold Life Cycle
  • Reduced Metal Waste
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CNC Sprue Cutting

Automated removal of gates and risers using CNC sawing technology. This ensures operator safety and consistent cut quality before machining.

  • High-Speed Sawing
  • Automated Loading
  • Safety Enclosures
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Robotic Deburring

Using 6-axis robots to remove parting lines and flash from complex sanitary geometries like shower mixers and angle valves.

  • Force Control Tech
  • Complex Geometry Pathing
  • Consistent Edges

Fine Polishing

Achieving mirror-like finishes essential for chrome plating. Our CNC and Robotic polishing cells handle abrasive belts and buffing wheels automatically.

  • Mirror Finish (Low Ra)
  • Auto Waxing System
  • Dust Extraction

Applications in Bathroom Hardware

1. Faucet & Mixer Production Line

The production of high-end faucets requires exceptional surface quality. Dingzhu’s automation solutions revolutionize this process. Starting with Low Pressure Die Casting (LPDC), we create brass bodies with minimal internal defects. Following casting, our Automatic CNC Sprue Cutting Machine precisely removes the feeding gates, preparing the workpiece for machining.

The critical phase is surface treatment. Our Robotic Cell Grinding and Polishing machines utilize force-compliant abrasive belt technology. This allows the robot to "feel" the surface of the faucet, adjusting pressure in real-time to sand away parting lines without altering the design curves. This is crucial for maintaining the "crisp" lines of modern square-design faucets while achieving the smoothness required for subsequent electroplating.

Key Advantages for Faucets:

  • Consistency: Every faucet receives identical polishing treatment, eliminating manual variations.
  • Efficiency: Robotic cells can operate 24/7, significantly increasing output compared to manual labor.
  • Health & Safety: Removes workers from hazardous metal dust environments, preventing occupational lung diseases.

2. Showers, Angle Valves & Fittings

Small sanitary fittings like angle valves and intricate shower heads pose unique challenges due to their size and complex shapes. Dingzhu’s CNC Polishing Machines are specifically engineered to handle these small-batch, high-variety components.

For shower systems, surface area coverage is key. Our Robotic Deburring Solutions employ multi-tool racks, allowing the robot to switch between files, grinding wheels, and polishing buffs within a single cycle. This ensures that even the tightest corners of a shower valve body are deburred and polished to perfection. This automation is vital for ensuring the longevity of the PVD or Chrome coating applied later.

Process Highlights:

  • Multi-Axis Flexibility: 6-axis robots reach undercuts and complex curves on shower bodies.
  • Fixture Design: Quick-change pneumatic fixtures reduce downtime between different product models.
  • Waste Management: Integrated dust collection systems keep the factory floor clean and compliant with environmental regulations.

3. Toilet Covers & Sanitary Plastics

Beyond metal, Dingzhu provides solutions for grinding and polishing Urea-formaldehyde (UF) and PP toilet covers. The flash generated during the compression molding of toilet seats needs to be removed smoothly to ensure user comfort.

Our automated grinding cells for toilet covers use specialized softer abrasives and precise speed control to remove flash without melting the plastic or leaving burn marks. This ensures a smooth, premium feel for sanitary ware products.

Material Versatility:

  • Brass & Zinc: Heavy-duty grinding for main bodies.
  • Stainless Steel: High-gloss mirror polishing for modern fixtures.
  • Plastics/Composites: Gentle deburring for toilet seats and covers.

Technological Strength

Dingzhu serves the manufacturing industries with total solutions of intelligent production management systems.

50+ National Patents
24/7 Automated Operation
100% Process Coverage
Global Service Network

Dingzhu’s young and professional engineers focus on innovative technology research and development, striving to make Dingzhu a famous brand worldwide. We have obtained patents of innovation and practical application in products for the Low Pressure Die Casting Machine, Auto Grinding, and Polishing Equipment. The company’s strong scientific and technological strength and rich professional experience, from design to installation operations, are constantly improving, earning a good reputation and quality service from the majority of users and well-known enterprises.

In-Depth: The Future of Sanitary Ware Manufacturing

The Shift to Intelligent Automation

The sanitary ware industry is undergoing a massive transformation. The traditional methods of manufacturing faucets, showers, and bathroom hardware relied heavily on manual labor, particularly in the grinding and polishing stages. This manual approach resulted in inconsistent product quality, high rejection rates, and significant health risks for workers exposed to metal dust and noise. Dingzhu Intelligent Equipment is at the forefront of changing this paradigm. By integrating robotics, CNC precision, and AI-driven process control, we provide a pathway to Industry 4.0 for bathroom hardware manufacturers.


Our solutions are not just standalone machines; they are integrated systems. For instance, our Robotic Cell Grinding and Polishing machines communicate with upstream casting equipment and downstream plating lines. This connectivity ensures that production data is tracked, bottlenecks are identified, and quality is maintained across the entire batch. Whether it is a zinc alloy door handle or a lead-free brass faucet body, our equipment adapts to the specific material properties to deliver optimal results.

Advancements in Low Pressure Die Casting (LPDC)

Quality polishing starts with quality casting. If a faucet body has porosity or inclusions, no amount of polishing can fix it; in fact, polishing often reveals these subsurface defects. This is why Dingzhu places immense importance on our Low Pressure Die Casting (LPDC) technology. Unlike gravity casting, LPDC fills the mold from the bottom up under controlled pressure. This results in a smooth, non-turbulent filling process that drastically reduces air entrapment and oxide formation.


For sanitary ware manufacturers, this means a significant reduction in scrap rates. A denser casting structure also means that the subsequent polishing process is faster and produces a superior mirror finish. Our LPDC machines are equipped with advanced thermal regulation systems to ensure the mold temperature remains consistent, further guaranteeing the mechanical properties and surface quality of the cast brass.

Precision in Deburring and Sprue Cutting

Before a casting can be polished, the excess metal—gates, runners, and flash—must be removed. In the past, this was a dangerous manual job using band saws. Dingzhu’s Automatic CNC Sprue Cutting Machine automates this hazardous task. Using high-precision servo controls, the machine positions the casting and cuts the sprue within millimeters of the product surface, minimizing the amount of material that needs to be ground off later.


Following cutting, the challenge is deburring. Complex sanitary shapes like shower mixers have internal contours that are hard to reach. Our Robotic Deburring Solutions utilize floating spindles that apply constant force. This "soft touch" allows the robot to follow the contour of the part, removing flash without gouging the base metal. This level of precision is critical for maintaining the tight tolerances required for the assembly of ceramic cartridges and valve components.

Eco-Friendly Renovation & Sustainability

Dingzhu serves the manufacturing industries not only with machinery but with eco-friendly renovation plans. Polishing and grinding generate significant amounts of dust, which can be explosive (in the case of aluminum) or toxic. Our automation cells are designed with integrated dust extraction hoods and airflow management systems. This captures particles at the source, protecting the factory environment and allowing for the recycling of metal dust.


Furthermore, automation reduces the consumption of consumables. Robots apply consistent pressure and utilize the full width of abrasive belts, extending the life of polishing media by up to 30% compared to manual operators. This reduction in waste, combined with the energy efficiency of our modern servo-driven motors, aligns with global sustainability goals for the manufacturing sector.

Looking to the Future

Looking to the future, Dingzhu intelligent equipment will adhere to industry breakthroughs as the leading development strategy. We constantly strengthen technological innovation, management innovation, and marketing innovation as the core of our system. We strive to become the leader in the field of intelligent, automated equipment application solutions.


As the demand for customized, high-quality bathroom hardware grows, the flexibility of Dingzhu’s equipment becomes a key asset. Our software allows for rapid reprogramming of robots to handle new designs, enabling manufacturers to switch between product lines quickly. From smart toilets to designer faucets, Dingzhu provides the foundational technology that brings these products to life with impeccable quality and efficiency.

Frequently Asked Questions

What materials can Dingzhu's polishing machines handle?

Our equipment is versatile and can handle a wide range of materials used in the sanitary and hardware industries, including Brass, Zinc Alloy, Stainless Steel, Aluminum, and even plastics like Urea-formaldehyde for toilet covers.

How does robotic polishing improve quality?

Robots provide consistent pressure, speed, and pathing that manual labor cannot match. This eliminates "over-polishing" or missed spots, ensuring a uniform surface Ra value perfect for electroplating.

Do you provide full turnkey solutions?

Yes, Dingzhu provides total solutions including factory layout design, equipment manufacturing (LPDC, Grinding, Polishing), installation, training, and intelligent production management systems.

What industries do you serve?

We primarily serve the Sanitary Ware industry (faucets, showers), but also extend to Auto Parts, Door Locks, New Energy components, and general Hardware Accessories.

Contact Dingzhu Intelligent Equipment

Specializing in automatic low pressure casting machine (LPDC), robotic cell grinding and polishing machine, furnace, gravity die casting machine, automatic sand core shooting machine, and CNC polishing machines.

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