Custom Surface Finishing Services
Give every metal product the appearance, protection and functional surface your customer expects. Yishang manages fabrication, surface finishing, sample approval, inspection and export packing as one OEM project, so you can release one specification and receive shipment-ready products.
- Ten protective, decorative and functional finish options
- Broad support for steel, stainless steel, aluminum, copper and brass
- Samples, color panels, pilot runs and repeat OEM batches
- Masking, cosmetic faces and packing reviewed before production
material, finish and final use
approve color and texture
verify agreed requirements
repeat-order focused
Ten Finishing Options, Grouped by What They Do
Start with the required outcome, then confirm the exact process from the material, environment, appearance and specification.
Protective Color Coatings
Powder coating, wet painting and electrophoresis / e-coating for color, coverage and corrosion-protective systems.
Electrochemical Finishes
Clear, colored or hard anodizing for aluminum, plus zinc, nickel, chrome and project-specific electroplating.
Stainless Chemical Treatment
Passivation for stainless steel products where cleanliness and corrosion requirements must be defined.
Mechanical & Blasted Finishes
Polishing, brushing, sandblasting and bead blasting for grain, reflectivity, texture or surface preparation.
Which Surface Finish Fits Your Product?
The right answer depends on what the product must survive, what the customer will see and which surfaces must remain functional.
Powder coating or a specified liquid coating system, with pretreatment and test requirements agreed.
Clear, dyed or hard anodizing selected by alloy, thickness, appearance and functional need.
Electroplating or e-coating selected by geometry, environment, conductivity and compliance needs.
Passivation after fabrication and cleaning, specified by the required standard and final use.
Brushing or polishing with direction, roughness, gloss and visual acceptance defined.
Sandblasting or bead blasting with media, pressure, target texture and post-treatment specified.
Surface Finishing for Products Your Customers Handle and See
We support complete metal products across industrial and commercial programs, with the finish selected around appearance, assembly and service environment.
Electrical & Electronics
Enclosures, control boxes, housings, heat sinks, panels and equipment covers.
Industrial Equipment
Machine guards, frames, trays, brackets, cabinets and protective shells.
Commercial & Architectural
Fixtures, displays, furniture structures, decorative panels and visible hardware.
Automotive & Energy
Battery trays, electronic housings, shields, mounting products and structural metal products.
Control the Risks That Make Buyers Rework a Batch
Most finishing problems begin with an incomplete specification or a product that was not designed for the selected process.
Approve the color reference, gloss, texture, substrate and acceptable variation before batch production.
Mark threads, grounding points, electrical contacts, press fits and mating faces for masking.
Review holes, enclosed spaces, hanging direction, drain paths and acceptable rack-contact zones.
Align cleaning, pretreatment, coating system, test method and acceptance criteria.
Plan handling, hardware installation, separators, protective film and export packing around cosmetic faces.
A Clear Surface Finishing Workflow
Each step answers a different purchasing question, so appearance and functional requirements are approved before volume is released.
1. Review the Specification
Confirm material, process, color, gloss, thickness, masking, tests, quantity and packing.
2. Approve the Sample
Use a color panel or finished product sample to approve appearance on the actual substrate.
3. Verify the Pilot Batch
Check coverage, rack marks, masking, dimensions, assembly and agreed inspection results.
4. Release Repeat Production
Retain the approved reference, inspection criteria and protection requirements for reorders.
Define Acceptance Before Anyone Judges the Finish
A phrase such as good finish creates arguments. A useful acceptance plan defines:
- Reference color, gloss, texture and viewing conditions
- Coating thickness, coverage and permitted rack marks
- Masking, threads, contacts and mating interfaces
- Adhesion or corrosion testing when the specification requires it
- Cleaning, handling and shipment condition
ASTM B117 or another test method is applied only when agreed for the selected substrate and coating system; test hours are not a universal service-life promise.
One RFQ for Products That Need Different Finishes
A single OEM program may contain powder-coated steel enclosures, anodized aluminum housings, passivated stainless trays and plated hardware. Managing every finish separately creates repeated transport, unclear ownership and inconsistent packing.
Yishang coordinates fabrication, finish approval, production follow-up, inspection, assembly support and packing under one project. Each surface still follows its own material and specification, but the buyer receives one communication and delivery route.
Quote the Finish from the Actual Product
Carbon steel, stainless steel, aluminum, copper, brass and project-specific metal grades.
RAL, Pantone, customer sample or approved panel where the selected process allows.
Specified by drawing or finish standard and verified by the agreed inspection method.
Confirmed from drawing, rack or tank suitability, drainage, handling and transport requirements.
Final capability: No universal thickness, corrosion result, color tolerance or maximum size is promised without reviewing the actual product and specification.
What We Need to Quote
Drawing & Substrate
3D CAD, dimensioned drawing, exact grade and existing surface condition.
Finish Specification
Process, pretreatment, color, gloss, texture, thickness and named standard.
Masking & Cosmetic Faces
Threads, contacts, mating surfaces, rack-mark zones and visible surfaces.
Quantity, Tests & Packing
Sample, batch, forecast, reports, protection and delivery target.
Before You Release a Surface Finishing Order
Good finishing starts with a complete specification and a shared definition of acceptance.
Yes. We can coordinate different finish routes for steel, stainless steel, aluminum, copper and brass products under one project and shipment plan.
Where the selected coating system allows, specify the color reference, gloss and texture. An approved sample or color panel is recommended for appearance-sensitive orders.
Retain the approved reference, substrate, pretreatment, coating system, gloss and inspection method. Minor process variation should be handled through an agreed acceptance range.
Yes. Mark all masking areas on the drawing, including threads, electrical contacts, bearing fits, mating faces and rack-mark limitations.
Yes. We support finish samples, color panels and pilot runs so appearance, masking and handling can be approved before repeat production.
A result can only be quoted against a defined substrate, pretreatment, coating system, test method and acceptance criteria. Test hours are not treated as a universal prediction of outdoor service life.
Coatings and plating add thickness and may affect threads, press fits, grounding or mating interfaces. These areas should be identified during drawing review.
Packing can include protective film, separators, bags, wrapping, individual compartments or other project-specific protection based on scratch sensitivity.
Samples and small pilot orders are supported, but setup, color changes, racking and testing affect low quantities. Share the first batch and annual forecast for a useful quotation.
Send Us Your Surface Finishing Project
Share your drawing, material, finish specification, color, masking, quantity, tests, packing and delivery target for a practical OEM quotation.
sales@zsyishang.com
