Creating custom door hardware finishes involves more than applying color to a finished handle. Manufacturers must control the base material, polishing direction, surface preparation, coating process, color reference, and corrosion requirements so the approved finish can be repeated consistently in mass production.

Start With Surface Preparation

Before any decorative treatment, the metal surface must be properly prepared. Stainless steel handles normally pass through welding cleanup, grinding, polishing, brushing, and inspection. Small scratches or uneven weld areas can remain visible after finishing.

HANGFAT uses 3D automatic welding and automatic polishing equipment to improve weld consistency and surface texture before finishing. (HANGFAT)

Different Finishes Require Different Processes

Selected HANGFAT door handles are available in satin stainless steel, polished stainless steel, PVD gold, PVD black, electrophoresis black, and powder-coated colors. (HANGFAT)

Satin finishes depend heavily on controlled brushing. Polished finishes require progressively smoother surface preparation. PVD uses a physical vapor deposition process to create decorative colors while improving surface wear resistance on applicable products. HANGFAT uses PVD for black, gold, and rose finishes on selected hardware. (HANGFAT)

Material And Finish Must Work Together

Base material affects both appearance and corrosion performance. Selected HANGFAT products are available in SUS304 and SUS316 stainless steel. (HANGFAT)

For example, the Stainless Steel U Form EN Standard Lever Handle offers satin, polished, PVD gold, PVD black, and electrophoresis black options. Applicable configurations can reach EN 1670 corrosion performance up to 480 hours. (HANGFAT)

Control Finish Consistency During Bulk Supply

One attractive sample does not guarantee that thousands of handles will look identical. For bulk custom door hardware, manufacturers need reference samples and measurable quality checkpoints covering:

• Color consistency

• Brushing direction

• Gloss level

• Surface scratches

• Weld visibility

• Coating coverage

• Corrosion performance

This is where working with a custom door hardware manufacturer instead of a trader becomes valuable. The factory can directly adjust polishing, preparation, coating, and inspection when variation appears.

Include Finish Requirements In The oem and odm process

A complete project sourcing checklist should define base material, finish code, approved color sample, application environment, expected quantity, corrosion requirement, packaging protection, and destination market.

HANGFAT provides OEM and ODM services and states a monthly production capacity of approximately 800,000 pairs or sets, making repeatable surface control important for large orders. (HANGFAT)

Different finishes are ultimately created through controlled preparation, polishing, coating, and inspection rather than color selection alone. For custom projects, combining the correct stainless steel grade, suitable finishing process, measurable quality control, and export requirements helps ensure the appearance approved during sampling can be maintained throughout mass production.