Hot-Dip Galvanizing Services | Agrisovgaz Hot-Dip Galvanizing Plant

plant in the Kaluga region

HOT-DIP
GALVANIZING BATHS

hot-dip galvanizing

from 35,000 ₽ / t

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REQUIREMENTS FOR
METAL SURFACE
BEFORE GALVANIZING

The following are not allowed on the surface of the base metal of products:
cracks, blisters, swelling, delamination, metal splashes, rolled-in scale, burrs, build-ups, edge curls, pores, inclusions, welding slag, residues of molding material, graphite, as well as the presence of paint coating.

It is not recommended to leave residues of lubricant, metal chips, marking paint, paper labels, marking adhesive, preservative materials, cooling lubricants with silicone oils, and traces of agents used for protection against welding spatter on the surface of the base metal of products.

On the surface of cast products there must be no pores or shrinkage cavities.

The surface of the product after gas, laser or
plasma cutting must be cleaned of spatter and build-ups, and sharp edges must be blunted to ensure guaranteed coating thickness and the strength of its adhesion to the base metal. Cut fragments must not get inside hollow profiles.

Individual dents, scratches, grinding marks and other defects caused by the production method are allowed on the surface of the product.

If the design solution and/or the steel grades used do not allow obtaining a coating within the specified thickness range by changing the galvanizing process parameters, the surfaces of the products may be subjected to shot blasting to enable an increase in the thickness of the zinc coating.

400

tons
per day

10000

tons
per month

144000

tons
per year

hot-dip galvanizing
technology

Hanging
Products are secured on cross-beams using metal wire of various diameters. Accordingly, the products must have technological holes that will be used for hanging.

Degreasing
Removal of oil and grease from the surface of products by immersion in a degreasing acid solution with surfactant additives. The presence of substances that cannot be removed by this method is not allowed (paint coating, silicone, fuel oil).

Rinsing
Removal of degreasing solution residues after the previous treatment by immersion and rinsing in water.

Pickling
Removal of iron oxides and ferrous mill scale residues by immersion in an aqueous solution of hydrochloric acid (HCl).

Rinsing
Removal of acid residues after the previous treatment by immersion and rinsing in water.

Fluxing
Immersion of products in an aqueous solution of zinc chloride and ammonium chloride. As a result, a dense film is formed on the steel surface, protecting the steel from further oxidation and facilitating the reaction with molten zinc.

Drying
The steel structure is placed in a drying chamber where the flux is dried and the metal is heated to a temperature of 100 - 120°C.

GALVANIZING
Immersion of steel structures in a bath of molten zinc at a controlled temperature of 440-460°C. When the structure is removed, excess zinc flows back into the molten bath, therefore a mandatory condition for galvanizing is the presence of drainage holes: the products must not have pockets, closed cavities or air traps; all cavities must be accessible for the unimpeded entry and exit of liquids, molten zinc and gases.

Cooling
The structure removed from the galvanizing bath has a temperature close to 450°C. Its cooling to ambient temperature occurs either in a clean water bath or in the open air.

Removal of metal products from the cross-beam
Galvanized products are removed from the cross-beam, packaged if necessary and transported to the warehouse.

RECOMMENDED STEELS FOR HOT-DIP GALVANIZING

GOST 380	GOST 1050	GOST 27772	GOST 19281
1 St0	St05kp	S235	09G2S
2 St1kp	St08kp	S245	11G1S
3 St1ps	St08ps	S255	17GS
4 St1sp	St08	S275
5 St2kp	St10kp	S285
6 St2ps	St10ps	S345K
7 St2sp	St10
8 St3kp	St11kp
9 St3ps	St15kp
10 St3sp	St15ps
11 St3Gps	St18kp
12 St3Gsp	St20kp
13 St4kp	St20ps
14 St4ps	St20
15	St25
A	B	C	D

Hot-dip galvanizing is applied to products made of low-carbon steel and steels according to GOST 380, GOST 1050, GOST 19281, GOST 27772 and their equivalents, as well as castings from steel, gray or malleable cast iron.

THE CUSTOMER'S MAIN RULE FOR HOT-DIP GALVANIZING TECHNOLOGY IS:
"Buy steel with regulated silicon and phosphorus content; each purchased batch of steel products must be accompanied by a certificate indicating the chemical composition of the steel according to the ladle sample".

ADVANTAGES OF WORKING WITH "AGRISOVGAZ"

PROMPT ORDER FULFILLMENT

The presence of two galvanizing lines allows producing a larger volume of products in a shorter time

QUALITY GUARANTEE AND STANDARD

We use only primary raw materials in our work. Quality guarantee of more than 30 years

GALVANIZING OF PRODUCTS UP TO 12.5 M IN LENGTH

The longest bath in the NWFD, measuring 13x1.8x3.2 m

WAREHOUSE COMPLEX

Availability of warehouse space for storing finished products

IN-HOUSE LABORATORY

The certified laboratory allows controlling all technological processes by our own forces

transport accessibility

Close location to federal highways

ENGINEERING

The "AGRISOVGAZ" company continues to strengthen its positions in the field of production and maintenance, introducing innovative solutions to improve service quality. This is a strategically important step that ensures long-term growth and sustainable development of our enterprise.

We are pleased to announce that we have successfully completed the replacement of a hot-dip galvanizing bath at one of our facilities in the Leningrad region. This project became an important stage in optimizing our production processes and ensuring the durability of steel structures.

Reinstallation of galvanizing baths is necessary for the continuous and efficient operation of galvanizing production equipment. During the hot-dip galvanizing process, the metal of the bath walls interacts with molten zinc, which leads to its partial destruction and equipment failure.

Therefore, timely replacement of baths is important for:

Maintaining product quality. Over time, the materials from which the baths are made are subject to corrosion and wear under the influence of chemically active substances and high temperatures. This can lead to an increase in dross and, as a consequence, to more frequent shop downtime during bath cleaning, increased zinc consumption, and reduced quality of galvanized products.
Production safety. Worn or damaged baths can cause accidents such as chemical leaks or equipment damage. This creates a threat to the health and life of workers.
Economic efficiency of the enterprise. Timely replacement allows avoiding unexpected production stoppages due to equipment breakdowns and maintaining a continuous production process and on-time order fulfillment, as well as reducing repair costs. All this helps optimize expenses and increase the overall profitability of the enterprise.

Bath service life

Depending on operating conditions, bath loads and maintenance, the service life of a hot-dip galvanizing bath can range from several months to 10 years.

"AGRISOVGAZ" is the largest network of hot-dip galvanizing plants in Russia and the CIS countries with production capacities of up to 144,000 tons of steel structures per year and extensive experience in the field of galvanizing engineering.

We offer services for the replacement of hot-dip galvanizing baths for other companies, guaranteeing high quality work performance and strict compliance with all industry standards. Cooperation with our enterprise means reliability and professionalism in solving any tasks related to galvanizing.

For consultations and additional information, contact us - our experts will promptly resolve any of your questions in the field of galvanizing production.