Powder Coating

Surface treatment methods for metal parts

Powder coating mainly used in the beautification and protection of sheet metal parts and weldments. In our processing, we pay special attention to this step to ensure the quality and aesthetics of the final product. Before coating, we strictly pre-treat the parts, including cleaning, degreasing, rust removal, etc., to ensure that the coating layer can adhere evenly and firmly to the surface of the parts. For certain specific parts, they can be directly subjected to powder coating after precise cutting. We pay a lot of attention to the quality of appearance, we promise never to compromise by using recycled powder for cost-saving.

powder coating to machinery parts
Powder coating to machinery parts

Basic process of Powder Coating

Preparation or Pre-treatment


Smearing with chlorine solution and dry it

Applying Powder


Sprays coating powder on weldment

Curing/Cooling and Finishing


Suspend workpiece post-furnace

Color Selection for Powder Coating

Metaco assist our clients in selecting color for their projects. If you have a specific color number, we can precisely match it to your requirements. In cases where a specific color number is not available, we offer the flexibility to mix and match colors according to your needs, using the color palette.

Gloss levels Selection for Coated Surface

We offer a wide range of gloss levels for powder coatings. Choose from flat, matte, semi-gloss and gloss finishes. Flat and matte finishes are non-reflective, semi-gloss finishes have a well-balanced sheen, and our gloss finishes provide maximum reflectivity!

Product display after Powder Coating

Table legs for furniture

Stable exports to Japan, quality is highly recognized by customers


Complex assemblies

Complexly crafted workpiece, testing our coating techniques


Heavy-Duty Weldment

Patterned sheet coating with even surface, long term export to USA


Bracket by laser cutting

Coating of small workpieces with customized color


Acceptance requirements after Powder Coating

Appearance quality

Be sure that the color of the coating uniform and match the specified shades. And that the surface is free of bumps, drips or irregularities. The coating must not blister, bubble, or flake, and the glossiness of the coating must align with predefined specifications.

Coating Thickness

Ensure that the coating thickness should be consistent across the entire surface, and sufficient coating coverage on edges and corners is crucial.


Key Causes Of Powder Coating Defects

Insufficient Coating Layers in Spraying
Powder Rub-off During Spraying
Insufficient Cleaning Before Spraying
Inadequate Base Material Treatment to the Workpiece
Recycled Powder With Impurities
Exposure of Hanging Points Leading to Inadequate Spraying