Powder Coating for Electrostatic Spray Application on Cold Surfaces
We are a manufacturer based in China, specializing in high-quality Powder Coating for Electrostatic Spray Application on Cold Surfaces for industrial clients worldwide. Technical support and custom formulation available.
Category：Application industries | Brand：MT
Introduction
MT R4-ES HJ601R is a thermosetting epoxy powder coating for corrosion protection of cast iron and steel valves and fittings. It is applied in a single layer by electrostatic spray onto cold (unheated) surfaces, then cured in an oven, giving water and gas distribution components a durable barrier without the need for preheating the part.
Why It Fits Valves & Fittings
Spray on Cold PartsNo preheating needed — powder is charged and applied at room temperature, then cured separately, suiting valve and fitting geometry.Heavy Corrosion BarrierA thick, continuous epoxy film protects cast iron and steel in buried and humid service environments.
Drinking-Water GradeSuitable for water distribution components; drinking-water contact approvals are available and should be confirmed at enquiry.Environmentally FriendlySolvent-free electrostatic powder process; overspray can be recovered and reused on the line.
Powder Properties
| Property | Typical Value | Method |
|---|---|---|
| Binder system | Epoxy | — |
| Density | 1.30–1.40 g/cm³ | ISO 8130-2 |
| Gel time at 200°C | 25–40 s | modified ISO 8130-6 |
| Particle size distribution | <32 µm: 25–40%; >125 µm: <2% | Malvern ISO 8130-1 |
| Storage stability | 6 months from manufacture at ≤ 23°C | |
Cured Film Properties
| Property | Typical Value | Method |
|---|---|---|
| Color | Blue, approx. RAL 5015 | — |
| Recommended film thickness | 120–220 µm | — |
| Flow | Smooth | — |
| Gloss at 60° | 70–100 units | ISO 2813 |
| Cross-cut adhesion | Gt 0 | DIN EN ISO 2409 |
| Curing conditions | 10 min at 190°C object temperature | — |
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