Harbin Sanyong Metal Surface Technology Co., Ltd.

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TianshuiAnodizing of aluminum, magnesium, and titanium alloys

TianshuiChemical Conversion Coatings on Aluminum, Magnesium, and Titanium Alloys

TianshuiFunctional Electroplating and Chemical Plating

TianshuiMicro-arc oxidation of aluminum, magnesium, and titanium alloys

TianshuiFunctional anodic oxide film on aluminum alloy

TianshuiPattern Formation and Selective Processing

TianshuiBluing of high-alloy steels, passivation of stainless steels

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TianshuiNative hard anodic oxide film

Conversion coating type: Natural‑color hard anodized coating Application area: High-speed rail entrance steps Partner companies: CRRC subsidiaries in Zhuzhou, Qingdao Sifang, and Changchun Railway Vehicles Advantages of the conversion coating: While aluminum alloy hard anodized coatings typically come in various colors, high-speed rail car designs mandate a uniform silver‑white finish for the aluminum exterior (except for door rails). Through advanced technical processes, our company has successfully achieved exceptionally high hardness and superior wear resistance in 6-series aluminum alloys at specified hardness levels.

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TianshuiHigh-speed rail manufacturing

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Product Description

Conversion coating type: Natural hard anodized coating

Application area: High-speed rail entrance step板

Partners: CRRC Zhuzhou, CRRC Qingdao Sifang, and CRRC Changchun Passenger Car Co., Ltd.

Advantages of the conversion coating: Hard anodized films on aluminum alloys are typically colored, but the design of high-speed train carriages mandates a silver‑white finish for the aluminum exterior—except for the door rails. Through advanced technological processes, our company has successfully achieved both exceptional hardness and superior wear resistance in 6000‑series aluminum alloys while maintaining the required surface hardness.

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