SK-MET — polyurethane enamel for C5-I and C5-M category systems
Polyurethane RAL enamel for steel structures and bridges, withstands +150 °C in a dry environment, finish of C5-I and C5-M systems per ISO 12944.

The primer coat of the SK-PUR polyurethane system: a two-component material with a polyisocyanate hardener, red-brown or grey. It is included in the OVP register of PJSC Transneft as part of the SK-PUR system for the outer surface of tanks, above-ground pipelines, structures and equipment, and recommended by PJSC NK Rosneft. With SK-PUR enamel the system is designed for categories C3, C4, C5 and 20 years, over the zinc-rich SK-TSINK for C5-M and the same period; the primer can be applied at temperatures from −10 to +40 °C.
| Manufacturer | Snezhinskie Kraski — OOO “ZLKS”, Yekaterinburg |
|---|---|
| Type | anticorrosive material |
| Base | two-component polyurethane; hardener — polyisocyanate solution |
| Colour | red-brown or grey (shade not standardised) |
| Application method | airless spray (nozzle 0.33–0.53 mm, 16–45 MPa); air spray (nozzle 2.5–3.0 mm, 0.25–0.4 MPa); roller; brush; solvent “SK-PUR” up to 5 % (airless) / 15 % (air spray) / 10 % (roller, brush) |
| Application temperature | from −10 to +40 °C (from +5 to +40 °C recommended); relative humidity max. 80 %; surface 3 °C above the dew point |
| Drying | pot life at least 2 h; dust-free max. 1.5 h, tack-free max. 4 h at 20 °C; minimum recoat interval 6 h at +20 °C (168 h at −10 °C, 2 h at +40 °C); maximum interval up to 6 months; full cure 7 days (3 days with hot drying) |
| Compatible materials | on its own or with polyurethane enamels and primer-enamels: SK-PUR enamel; over the SK-TSINK primer |
| Shelf life | 24 months from the date of manufacture; storage from −40 to +40 °C in the manufacturer’s sealed containers |
| Standards | TU 2312-012-51472338-2014; STO-01393674-007-2022; OTT-25.220.01-KTN-097-16 |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Polyurethane RAL enamel for steel structures and bridges, withstands +150 °C in a dry environment, finish of C5-I and C5-M systems per ISO 12944.
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