Digalva

Hot dip galvanizing service

Every 90 SECONDS around the world ONE TON of steel is consumed by corrosion.

Strategic business unit that offers the service of hot dip galvanizing for steel structures of the national industry with a Zinc bath at a temperature of 450oC achieving an alloy of both materials.
We have the largest hot dip galvanizing plant in southwestern Colombia, with a capacity of 1,800 t/month.

Contamos con la planta de galvanizado en caliente más grande del suroccidente colombiano, con capacidad de 1.800 t/mes.

Our benefits

Why Galvanize with Dimel Ingeniería?

Trajectory

We are the most modern and efficient hot-dip galvanizing plant in Colombia.

Support

We provide support services in: preparation of the parts (according to ASTM A385 recommendations), process follow-up and final delivery.

Quality

The zinc used in our plant is certified under ASTM B6 standard, which guarantees its high degree of purity.

Compliance

We galvanize in compliance with the standards required by the international norm ASTM A123 (Colombian technical norm NTC 3320), with a capacity of 1,800 t/month.

Why Galvanize?

The most effective and economical solution against corrosion.

It is the world’s most effective and economical corrosion protection for the protection of steel structures.

One out of every two tons of steel produced in the world replaces corroded steel.

Prevents corrosion and prolongs the service life of the steel.

Maintenance-free for many more years.

Durable protection for steel

Galvanizing processes

1. Degreasing

What is degreasing for? The purpose of degreasing is to provide a clean metal surface, free of grease and oil, suitable for pickling. Degreasing can be alkaline or acidic. If the grease is not removed from the metal parts, a defect is generated which we call picas or absence of zinc in the part. Degreasing is controlled by means of pH and concentration of active points.

2. Stripping

The speed and control of stripping depend on the iron concentration and the hydrochloric acid concentration, and are seen through the Kleingarn curve.

3. Rinsing

The purpose of rinsing is to prevent carryover of acid solution and trace iron into the flux bath.

4. Fluxing

The purpose of the flux bath is to facilitate the metallurgical reaction between the zinc and the steel part and to help prevent re-oxidation of the pickled part.

5. Drying

The purpose of rinsing is to avoid the entrainment of acid solution and iron traces into the flux bath.

6. Hot dip galvanizing

The purpose of galvanizing is to provide a layer of protection to the coated steel, thus extending its service life and deterioration over time.

7. Cooling

The purpose of cooling is to prepare the piece for the passivation process, so that at temperatures above 40 degrees the passivate becomes inactive and no longer fulfills its protective function, in addition to generating an opaque appearance and white veil. Chloride concentrations are controlled in these baths.

8. Passivation

Passivation is the formation of a relatively inert film on the surface of a material (often a metal), which masks it against the action of external agents.

9. Inspection

Thanks to the galvanized alloy, storage can be done outdoors without fear of oxidation.

Maximum corrosion protection

Prolonging the service life of steel parts

Ratio of zinc coating thickness to service life

Atmospheric corrosivity categories according to ISO 9223

Atmospheric corrosion resistance depends on the environment to which the product is exposed. In more corrosive areas, the use of the duplex system is recommended for more effective protection.

*Hot dip galvanized + paint coating.
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Everything you need to know

Frequently asked questions

What are the advantages of hot-dip galvanizing for steel protection?

Hot-dip galvanizing provides effective and economical protection against corrosion, prolonging the life of the steel and reducing the need for maintenance for many years.

What is the duplex system and in which environments is it recommended?

The duplex system combines hot-dip galvanizing and a paint coating, ideal for highly corrosive areas, providing more durable and effective protection.

What types of poles does DIPOLE manufacture and for what applications?

DIPOLE manufactures galvanized steel and fiberglass poles, with seven different lines that cover needs in distribution, lighting, high voltage, solar energy and more.

How does Dimel Ingeniería guarantee the quality and sustainability of its processes?

Dimel Ingeniería complies with ISO standards and RETIE and RETILAP certificates, in addition to implementing environmental management processes to minimize resource consumption and waste generation.

What services does Dimel Ingeniería offer in Peru?

Dimel Ingeniería S.A.C. in Peru offers solutions for electrical distribution companies and contractors, with a plant in Lurin, Lima, dedicated to the manufacture of GRP (fiberglass) poles.

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