Home hero: a loaded bar lifting out of a plating tank

ISO 9001:2015IATF 16949:2016Since 2013Pathum Thani, Thailand

Zinc & zinc-nickel platingbuilt for automotive parts

Three automatic plating lines, bath chemistry checked every four hours, coating thickness measured on every lot, and every bar traced in our own ERP — trusted by suppliers to Toyota, Isuzu, Nissan and Ford.

Request a quote Tour our facilities

3
automatic plating lines: 4,800
m² plant area: 70
employees: 3 days^{To confirm}
standard lead time

Parts we plate go into vehicles from

01About Chayatat

Great plating isconsistency, lot after lot

Chayatat Products (CTP) has plated and polished metal parts for automotive suppliers since 2013. We invest in automatic lines, an in-house chemical lab, test equipment and our own ERP so that every lot comes out the same — and can always be traced.

Founded: 8 August 2013
Location: Lam Luk Ka, Pathum Thani
Certified standards: ISO 9001:2015
IATF 16949:2016

More about us

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people on our team

02What we do

Finishes engineered for automotive parts

Non-cyanide alkaline baths and trivalent (Cr³⁺) passivation throughout — no hexavalent chromium.

All services

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Zinc plating

Non-cyanide alkaline zinc, 5–15 µm to spec, with silver/blue, yellow or black passivation.

ZTS120ZTY240ZTB240T

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Zinc-nickel plating

Zinc-nickel alloy with high corrosion resistance for underbody parts, tubes, shafts and hubs.

ZNS120ZNS480ZNB480

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Polishing

Die marks, impact marks and dents polished smooth before plating — then straight onto a plating line in the same plant.

Pre-plating prep

03Process control

Every variable that affects the finish is controlled and recorded

Plating and passivation tanks are dosed automatically, while bath concentration, tank times, plating current and oven temperature are recorded in our ERP so every lot can be traced.

Every 4 h
every bath analysed around the clock, with trend charts: 5 points
coating thickness measured on every lot before delivery: Auto-dose
automatic dosing on plating and passivation tanks: 1,950 mm
longest part we can plate

04Production lines

Three automatic plating lines

Automatic hoists and per-part programs give every bar the same tank times and current, every time. Each box shows the line’s maximum part envelope (mm) next to a 1.7 m person.

Line details

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LINE

A

Automatic

Non-cyanide alkaline zinc (blue, yellow & black passivation) · Alkaline zinc-nickel (blue & black)

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LINE

B

Automatic

Non-cyanide alkaline zinc (blue passivation) · Alkaline zinc-nickel (yellow)

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LINE

C

Automatic^{To confirm}

Data pending

05Process

34 steps from receiving to delivery

Straight from our zinc-nickel QC process chart, with quality checkpoints at every critical stage.

See the plating process

01
Receive & set up
Inspect incoming parts, rack them and set the plating program for the part type
Steps 1–4
02
Surface preparation
Degrease, pickle, electro-clean and activate — truly clean before plating
Steps 5–18
03
Plating
Zinc-nickel plating with current controlled and logged by the PLC for every bar
Steps 19–21
04
Passivate, seal & dry
Trivalent passivation, sealer, air blow and oven drying
Steps 22–28
05
Inspection
QC check, packing, QA check and functional test before storage
Steps 29–32
06
Store & deliver
Organised storage and delivery to plan
Steps 33–34

06Test lab & quality control

Measured. Tested. Traceable.

Every lot gets a five-point thickness check, every bath is analysed every four hours, and we run our own full set of test equipment.

Quality control & inspection

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XRF thickness analyser

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Salt spray testing

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Bath analysis every 4 h

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Heat quench tester

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07Production control

Every part has a historyfrom receiving to invoice

We built an ERP specifically for plating. It connects every department and takes data straight from the line PLCs, so customers get instant status answers — and when a lot needs tracing, we have real data for every step.