Turnkey Surface Treatment Lines for Zipper & Hardware Factories
QLQ supplies turnkey surface treatment line solutions that combine equipment, chemicals, process support and operator training for zipper and hardware factories. Plan a new workshop or upgrade an existing line with coordinated polishing, cleaning, rack plating, barrel plating and spray painting operations.
QLQ brings 25 years of industry experience and company-wide equipment export experience across 60+ countries to your line-planning discussion. The proposal is built around your parts, required finish, production volume and factory conditions—not a fixed machine package.
One Supplier, Three Complete Lines
QLQ coordinates three surface treatment routes: rack plating, barrel plating, and painting & coating. Each route connects the required preparation, finishing equipment, consumables and technical support in an agreed project scope.
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Rack Plating Line
Rack plating suits larger, complex or appearance-sensitive metal parts that need individual positioning. QLQ can coordinate racks, plating machines, pretreatment chemicals, bath consumables and process support for zipper sliders and bag hardware.
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Barrel Plating Line
Barrel plating suits large batches of small metal parts that can tolerate tumbling contact. QLQ can coordinate barrels, plating equipment, upstream polishing and cleaning, plating chemicals and loading guidance for small zipper sliders and hardware parts.
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Painting & Coating Line
Painting & coating suits parts requiring a coloured, decorative or protective finish. QLQ can coordinate cleaning, spray painting equipment, paints and curing operations; electrophoresis and phosphating are assessed separately where the substrate and finish specification require them.
What a Turnkey Line Includes
A turnkey line includes the equipment, compatible consumables and support needed for the agreed finishing route. QLQ defines the supply list, process interfaces and commissioning responsibilities in the proposal, so you can distinguish included items from optional equipment and factory-side work.
| Category | What We Supply | Examples | Linked Page |
|---|---|---|---|
| Equipment | Racks, barrels and machines matched to the part geometry and finishing route. | Rack plating line, barrel plating line, polishing machines, cleaning machines and spray painting machines. | Rack plating equipment & process |
| Chemicals | Plating salts, brighteners and additives selected for the specified bath system. | Metal-ion salts, brighteners, levelling agents, wetting agents, degreasers and pretreatment chemicals. | Barrel plating pretreatment |
| Polishing | Polishing compound and consumables for preparation before plating or painting. | Polishing paste, grinding compound and buffing compound, matched to the material and target finish. | Preparation before barrel plating |
| Painting | Paint, varnish and protective coating products matched to the application and curing method. | Decorative colour paint, clear varnish and protective finishing coatings. | Painting pretreatment & preparation |
| Support | Line upgrade planning, technical training, commissioning and ongoing process support within the agreed scope. | Layout review, operator and maintenance training, troubleshooting and spare-part support. | Upgrade & technical support FAQ |
The process plan connects polishing, cleaning and finishing rather than treating them as separate purchases. QLQ reviews preparation requirements, consumable compatibility and production flow before recommending the line configuration.
Site utilities and environmental responsibilities must be defined before commissioning. Confirm power, water, ventilation, wastewater handling and local approval requirements in the project scope; a turnkey proposal is not a blanket guarantee of regulatory approval.
Rack vs Barrel vs Painting: Which Line Fits Your Product
The best line depends on the substrate, geometry, batch size and required finish. Rack plating prioritises individual positioning, barrel plating handles suitable small parts in bulk, and painting provides colour and coating options without assuming every part can use the same treatment.
| Product type | Best line | Why |
|---|---|---|
| Zipper sliders — small metal sliders in bulk | Barrel plating; painting for a coloured finish | Small sliders suit batch processing when tumbling does not damage their geometry or appearance. The target finish determines whether to plate or paint. |
| Hardware parts — larger, complex or decorative pieces | Rack plating | Individual fixturing controls positioning and contact, helping protect appearance-sensitive parts from bulk tumbling. |
| Small batches — varied shapes or appearance-sensitive metal parts | Rack plating; spray painting when colour is required | Individual handling suits mixed geometry and controlled presentation. Select the finish first; batch size alone does not decide the route. |
| Large batches — small, robust metal hardware | Barrel plating; tumbling spray painting for suitable painted parts | Bulk handling reduces individual loading work. Confirm that the parts tolerate contact and that the loading method meets the finish requirement. |
| Metal + plastic combos | Painting & coating, subject to compatibility review | Different substrates need compatible preparation, adhesion and curing conditions. Do not assume an assembled metal-and-plastic part can enter a standard metal plating bath; separate treatment may be needed. |
A sample review is the next step before final line selection. Send part photos, substrate details, dimensions, daily output and your finish specification so QLQ can assess handling, pretreatment and coating requirements together.
FAQ
QLQ can support both new surface treatment workshops and upgrades to existing lines. These answers explain the supply and service scope buyers should confirm before ordering.
Can you supply the whole line — equipment, chemicals, polishing compounds, paints and technical support?
Yes, QLQ can coordinate equipment, chemicals, polishing compounds, paints and technical support as one turnkey surface treatment project. The proposal specifies the chosen route, machine list, consumables, commissioning services and customer-side responsibilities.
Do you provide turnkey surface treatment lines for zipper factories?
Yes, QLQ provides surface treatment line solutions for zipper factories, including metal zipper sliders and related hardware. Rack plating, barrel plating and spray painting are selected according to the parts and finish, with polishing and cleaning linked into the process where required.
Can you help upgrade our existing plating line?
Yes, QLQ can help plan an upgrade to an existing plating line. Share your layout, equipment list, current process and production problems so the team can review preparation, handling, bath control and automation needs before recommending changes.
What chemicals and additives do you supply for rack and barrel plating?
QLQ supplies plating salts, brighteners, levelling agents, wetting agents and other bath additives, together with cleaning and pretreatment chemicals. The product selection depends on the substrate, deposited metal and existing bath chemistry; rack plating and barrel plating should not automatically use the same dosing schedule.
How many years has QLQ been building surface treatment lines?
QLQ brings 25 years of industry experience to surface treatment line projects. Its equipment export reach covers 60+ countries across the wider company business; this is not presented as a count of turnkey surface treatment lines or their destinations.
Do you offer on-site technical support and operator training?
Yes, QLQ can arrange on-site installation, commissioning and operator training where included in the quotation. Confirm the location, service duration, travel arrangements and training scope before ordering; remote technical support and ongoing parts and consumables supply can also support daily operation.