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Keep corrosion at bay with a powerful semi-permanent ester-wax protective for all metal surfaces.
Synergen 501 has over 35 years of use within the OCTG industry across the globe to protect pipe joint OD, renowned for its effective protection of the metal surface.
Synergen 501 prolongs outdoor mechanical protection even under extreme marine conditions. Providing a heavy duty coating to protect external surfaces for in excess of 2 years outdoors, this pigment-free solution facilitates easy inspection, self healing under mechanical damage and is suitable for most climates.
When applied, the solvent carrier evaporates to leave a durable coating which firms but never hardens to a solid state, preventing flaking, allowing self-healing and providing a good resistance to impact damage.
As with all non-aqueous coatings, Synergen 501 should not be applied when the steel temperature is less than 3°C above dew point – this helps avoid moisture being present on the surface as condensation.
A variety of application techniques is possible and effective. Airless spraying is ideal but immersion, paint rolling and brush have also been successfully employed under field conditions.
The duration of protection achieved with any barrier coating depends upon the physical thickness of that barrier and good surface preparation. The surface micro-profiles of prepared tubes varies quite widely depending upon age and method of preparation and may be between 30μ and 80μ typically.
We recommend that a minimum coating thickness of 60μ dry film thickness and an ideal thickness of 90μ d.f.t. (over micro-profile) be employed. These thicknesses translate as 120μ and 180μ wet film thickness respectively. The use of a “comb” type w.f.t. gauge is recommended in QA since this invariably measures thickness “over profile”. In tropical climates the rapid loss of the carrier solvent may reduce the w.f.t reading and acceptable d.f.t. coatings can be achieved with w.f.t. readings as low as 70μ. D.f.t. can be measured using a digital d.f.t. gauge such as the elcometer 456 fitted with the ultra/scan probe and snap on cap. The use of the cap is important as it spreads the load and avoids the probe point sinking into the coating which would potentially produce an incorrect reading.
The drying time of the coating varies in response to ambient temperature and ventilation. Touch dryness may be achieved within one to two hours but full mechanical strength may not develop for several further hours. The coating should not be exposed to direct rainfall or water impingement until the coating is dry.
Synergen 501 Data SheetDownload
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