Metal Surface Treatment Chemicals & Phosphate Coating Service Thailand
ST.RIZING — Thai Manufacturer of Metal Surface Treatment & Rust Prevention Chemicals
S.T. Rizing Co., Ltd. is a Thailand-based manufacturer (not an importer or trading agent) of metal surface treatment and corrosion prevention chemicals, with over 20 years of experience. We also operate our own phosphate coating plant in Bang Phli, Samut Prakan — so you can buy the chemicals, send us your parts, or both.
ISO 9001 / ISO 14001 certified · Thailand Outstanding Industry Award · Green Industry Award
Why buy from a Thai manufacturer instead of an import agent?
| Factor | ST.RIZING (Thai manufacturer) | Import agent |
|---|---|---|
| Price | Direct factory price — no import margin | Freight + duty + agent margin |
| Custom formulation | Yes — we adjust to your line | Difficult, needs overseas approval |
| Lead time / stock | Local production, fast resupply | Depends on import cycle |
| On-site technical support | Thai engineers visit your plant | Limited |
Our Services & Products
- Zinc Phosphate Coating Service (Bonderizing) — corrosion protection and paint-adhesion base layer before powder coating.
- Manganese Phosphate / Parkerizing Service — wear resistance and lubricant retention for gears, pins, springs and engine parts.
- Black Oxide Service — decorative black finish with corrosion resistance.
- Powder Coating Service — including full surface preparation in-house.
- Surface Preparation Chemicals — degreasers (Finecleaner), rust removers, surface conditioners, zinc phosphate and manganese phosphate chemicals.
- Rust Preventive Oil (NO RUST) — for storage and shipment of steel parts.
- VCI Anti-Rust Paper (FERROTECT) — Thailand's first domestic VCI paper manufacturer. Custom sizes and formulations available.
- Chromate / Passivation / Zinc Flake coatings.
Zinc Phosphate vs Manganese Phosphate — which do you need?
| Zinc Phosphate | Manganese Phosphate (Parkerizing) | |
|---|---|---|
| Main purpose | Corrosion protection + paint base | Wear resistance + lubrication |
| Crystal | Fine, uniform | Thicker, harder |
| Finish colour | Light grey | Dark grey to black |
| Typical parts | Steel furniture, cabinets, structures, automotive | Gears, pins, springs, engine components |
Standard Surface Preparation Process (before powder coating)
- Degreasing — remove oil and contaminants
- Rust removal / pickling
- Surface conditioning — for fine, uniform phosphate crystals
- Zinc phosphate coating
- Rinse and dry
- Powder coating and curing
Frequently Asked Questions
Q: Are you a manufacturer or a trading company?
A: We are a manufacturer. We produce our surface treatment and rust prevention chemicals in Thailand, and we run our own coating plant in Samut Prakan.
Q: Can you customise the chemical formulation for our production line?
A: Yes. Because we manufacture in-house, our technical team can adjust formulations to your process conditions and support you on site.
Q: Where is your coating plant located?
A: Bang Phli, Samut Prakan — in Thailand's main industrial belt near Bangkok and Suvarnabhumi Airport.
Q: Do you supply VCI paper in custom sizes?
A: Yes. FERROTECT VCI paper is produced in Thailand, so custom sizes and formulations for different metals are available.
Q: What certifications do you hold?
A: ISO 9001 and ISO 14001, plus the Thailand Outstanding Industry Award and Green Industry Award.
Our English Pages
- Zinc Phosphate Coating Service Thailand — bonderizing before powder coating: process, applications, and how to work with us.
- VCI Anti-Rust Paper Manufacturer (FERROTECT) — how VCI works, comparison with desiccant and oil, custom sizes.
- Rust Preventive Oil (NO RUST) — when to use it, how to choose a grade, custom formulation.
Contact Us
Request a factory quotation or free technical consultation:
Tel: +66 2-174-7160 · Hotline: +66 86-577-2275 · LINE: @strizing
S.T. Rizing Co., Ltd. — Bang Phli, Samut Prakan, Thailand
