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In the world of surface preparation, the accuracy of cleanliness assessment is crucial. It not only influences the quality of the final application but also ensures the durability and adherence of the coating. A shift from traditional methods to more advanced, precise tools has revolutionized how cleanliness is evaluated. 

Understanding the Evolution of Cleanliness Evaluation

Traditionally, evaluating surface cleanliness involved the use of a x30 magnifier, a method dependent on the operator's expertise and subject to a degree of subjectivity. This approach, while having its merits, pales in comparison

Airblasting operations are a critical component of surface preparation and finishing processes, demanding meticulous control over various parameters to ensure optimal outcomes. The effectiveness of airblasting is profoundly influenced by factors such as pressure, nozzle diameter, dust control, cleanliness, and surface roughness. Understanding the "why" behind the need for precise monitoring reveals the significance of achieving desired specifications, which in turn, enhances the quality, efficiency, and safety of airblasting operations. 

Why Precise Monitoring Matters 

Surface preparation for pipe coating in the oil and gas industry is a process that demands precision and attention to detail. Given the industry's stringent requirements, where pipes are often expected to have a lifespan exceeding 25 years, every aspect of the preparation process becomes critical. The dual goals of this process are to remove any scale or rust and to create the most suitable surface profile for coating adhesion.

Descaling in the metalworking industry, especially for coils and plates, is a vital process post-lamination. After being subjected to high temperatures during lamination, coils and plates often develop a layer of scale on their surface. This scale, if not removed, can hamper further processing and affect the quality of the final product. While acid bath treatments are commonly used, blasting is essential to maximize scale removal and prolong the life of these acid baths.

The Challenge of Scale on Coils and

Effective April 1, 2024, Seoul Shot Industry Co., Ltd. will officially change its name to Winoa Korea Co., Ltd.

A Legacy of Growth and Innovation

Since joining the Winoa Group, a global leader in metal surface cleaning, in 1999, Seoul Shot Industry has established itself as a frontrunner in the Korean metal abrasives industry, experiencing steady growth and success. This name change marks a significant milestone in the company's journey, solidifying its position as Winoa's Korean sales subsidiary and reinforcing its commitment to further growth and collaboration with the Winoa Group.

Desanding in foundry is a critical post-casting process that ensures the quality and functionality of metal parts. During casting, liquid metal is poured into a sand mold. Once the metal cools and solidifies, it emerges encased in a hard, sticky layer of sand. The primary objective in desanding is to remove this sand completely without damaging the part, preparing it for subsequent machining operations.

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▲ Desanding in the fondry process

Understanding the

Metal surface treatment is an essential aspect of industrial manufacturing, impacting the durability, efficiency, and quality of metal products. This overview explores various critical applications, each tailored to specific needs and challenges in the field.

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Descaling in Forging

Forging processes often result in scale formation on metal parts. Descaling in forging involves removing this scale to ensure quality and prepare the surface for further operations. Techniques include abrasive blasting with specific materials like S390 to S660 and GP18 t

'Winoa Korea Co., Ltd.'
A Global Leader in Steel Abrasives

There are some low-priced shot ball suppliers who ignore quality.

However, Winoa Korea Co., Ltd. goes beyond being a supplier of quality products.

We aim to be a partner who can find the best solution with our customers.

The sandblasting process is a mechanical technique for the controlled cleaning of a surface, usually metallic. It is made by erosion thanks to the abrasion generated by propelling metal shots or grit with compressed air lances.

Another method uses wheel blasting machines. The sandblasting process, in addition to allowing the surface of a metal product to be cleaned from residues and corrosive scales, can also be used to obtain a particular

The terms sandblasting and shot peening in Korea are sometimes used interchangeably but in fact they describe two very distinct procedures for surface treatment and finishing in different industrial fields.

What is sandblasting?

Sandblasting is the procedure that allows you to remove and eliminate, with a stream of abrasive and air launched at high speed and at very high pressure, impurities and corrosive slags: paints, rust, oxides, sand and calamine. In this way the surface can be prepared in order to create the best adhesion between the surface and the coating that will be applied or reapplied on the it.

For the sandblasting process, various types of abrasive material are used depending on the result to be obtained in terms of cleanliness and roughness of the surface. Mineral abrasives such as Garnet, Corundum or glass can be used,