Nittanya Auto
Nittanya Auto
The global automotive market has experienced a radical structural transition regarding active vehicle safety and component durability. Brake discs, operating under harsh environmental conditions including road salts, extreme heat cycles, and mechanical stress, require heavy-duty surface protection. Traditionally, oil-dipped or basic solvent-painted rotors served the aftermarket. However, modern environmental regulations and demanding performance criteria have positioned Geomet coated brake discs as the premium industry benchmark.
Geomet is a non-electrolytically applied inorganic zinc-flake surface treatment. It provides comprehensive rust-proofing without risking hydrogen embrittlement—a critical defect risk in high-tensile steel components. By meeting the stringent European Union CE Mark standards, Geomet coated rotors assure fleet operators, automotive OEMs, and global parts distributors of consistent thermal performance, reduced mounting runout, and eco-friendly manufacturing compliance.
What sets Geomet apart from paint, powder coatings, and electroplating is its specialized thin-film chemistry. Applied as an aqueous dispersion, it consists of overlapping zinc and aluminum flakes bound in an inorganic matrix. During the curing process (at approximately 300°C), these metal flakes form a dense, metallic barrier that is highly conductive and thermally stable.
This barrier operates on three distinct protective principles:
| Coating Type | Typical Thickness (µm) | Salt Spray Resistance (ISO 9227) | Thermal Threshold (°C) | Cr(VI) Free Compliance | Friction Face Performance |
|---|---|---|---|---|---|
| Geomet 321 / 500 | 8 - 15 | 120 - 240+ Hours | Up to 300°C | Compliant (100% Cr-Free) | Excellent (Self-cleaning, no pad glazing) |
| Dacromet | 5 - 15 | 120 - 240+ Hours | Up to 300°C | Non-Compliant (Contains Hexavalent Cr) | Moderate (Outdated due to environmental bans) |
| Temp Paint / Primer | 20 - 40 | 24 - 48 Hours | Under 180°C | Varies | Poor (Can cause pad transfer issues) |
| Electro-Zinc Plating | 5 - 10 | 48 - 72 Hours | Under 120°C | Compliant | Poor (Rusts rapidly after friction wear) |
Unlike traditional bare cast iron rotors that require oil coats to prevent rust during shipping, Geomet rotors are dry. This saves maintenance technicians substantial time, as they can install the discs directly out of the box without using solvent sprays.
Moisture and humidity in warehouses can ruin bare metal brake discs. Geomet coatings ensure that rotors remain rust-free even when stored for extended periods in humid coastal transit centers or regional distribution hubs.
With modern alloy wheels featuring open spoke patterns, unsightly rusty hubs spoil the vehicle's appearance. Geomet keeps the non-swept areas clean, satisfying end-user cosmetic and functional expectations.
Different markets present distinct regulatory hurdles for brake components. In Europe, ECE R90 safety certification is mandatory for replacement brake discs, evaluating thermal performance under heavy load, speed-sensitivity, and friction dynamics. Our manufacturing facility, Qingdao Nittanya Auto Co., Ltd., integrates strict adherence to CE certification requirements alongside global environmental regulations.
By eliminating toxic hexavalent chromium, our Geomet-coated products comply with direct target legislations, including:
Utilizing premium gray iron (GG20/G3000 standard) to ensure structural strength, resistance to heat checking, and optimal thermal conductivity.
Engineered on state-of-the-art automated machining cells. Runout is held to less than 0.05mm and thickness variation (DTV) under 0.01mm.
Every disc undergoes dynamic balancing to prevent high-speed vibration. The surface is then coated via automated dip-spin lines.
Located in Qingdao, China, one of the country's most important international port cities, Qingdao Nittanya Auto Co., Ltd. enjoys convenient transportation and excellent logistics advantages for global shipments. Since its establishment, Nittanya Auto has been committed to providing high-quality automotive parts to customers worldwide. With years of industry experience and continuous technological innovation, the company has developed into a reliable supplier serving customers across Europe, North America, South America, Africa, the Middle East, and Asia.
Our production facilities are equipped with advanced casting, machining, balancing, and testing equipment, ensuring stable production capacity and strict quality control throughout every manufacturing process. The annual production capacity exceeds one million pieces, enabling us to meet the diverse demands of both OEM and aftermarket customers.
Nittanya Auto possesses a strong technical team consisting of experienced engineers and skilled professionals dedicated to product development, quality improvement, and technical support. Our extensive product range covers more than 1,000 models suitable for European, American, Japanese, Korean, and other international vehicle applications.
Quality is at the core of our business. We implement rigorous inspection procedures and continuously improve our manufacturing processes to ensure that every product meets international quality standards and customer expectations. In addition, we offer flexible OEM and ODM services, helping customers develop customized solutions for their specific market requirements. Guided by the principles of excellent quality, competitive pricing, timely delivery, and professional service, Qingdao Nittanya Auto Co., Ltd. strives to build long-term and mutually beneficial partnerships with customers around the world.
