NEWS
Recently, a batch of custom-made ASTM A123 high-zinc flat steel bars has been successfully prepared to meet the specific requirements of an overseas client, demonstrating the growing market preference for reliable hot-dip galvanized steel solutions.
Customized Specification for Practical Engineering Needs
The flat steel bars were manufactured according to the ASTM A123 standard, with a customized dimension of 60×6 mm. This specification is widely used in structural applications due to its balanced combination of strength, flexibility, and ease of fabrication. Flat steel bars of this size are commonly integrated into welded or bolted assemblies, making them suitable for a wide range of construction and infrastructure projects.
Customization of dimensions allows the material to better align with project design requirements, reducing on-site cutting and processing while improving installation efficiency. This approach also helps project owners maintain consistent structural quality across different components.

High-Zinc Coating for Enhanced Corrosion Resistance
One of the most important characteristics of this flat steel bar is its high-zinc coating layer. The zinc coating thickness typically reaches Z275 (275 g/m²) or higher, which is significantly thicker than standard galvanized products. This heavy zinc layer provides superior protection against corrosion, especially in outdoor environments where steel is continuously exposed to moisture, oxygen, and pollutants.
The hot-dip galvanizing process forms a dense and tightly bonded zinc layer on the steel surface. This layer acts as both a physical barrier and a sacrificial coating, protecting the base steel even if the surface is scratched during handling or installation. As a result, high-zinc flat steel bars offer a longer service life and reduced maintenance requirements.
Secure Binding Method for Transportation Safety
To ensure product integrity during transportation, the flat steel bars are horizontally bundled using steel bands. The spacing of the binding bands is carefully controlled and kept uniform. This binding method is designed to prevent the bundles from loosening or disintegrating during loading, unloading, and long-distance transportation.
Proper packaging is especially important for export shipments, where steel products may experience multiple handling stages. Uniform band spacing helps maintain bundle stability, minimizes deformation, and ensures that the products arrive at the destination in good condition.

Suitable for Long-Term Outdoor Applications
Thanks to the thick zinc coating and stable mechanical properties, ASTM A123 high-zinc flat steel bars are widely used in applications that require long-term rust prevention. Typical usage scenarios include:
- Outdoor building structures
- Highway guardrails and safety barriers
- Infrastructure support components
- Industrial frameworks exposed to weather conditions
In these applications, corrosion resistance directly affects structural safety and service life. High-zinc flat steel significantly reduces the risk of premature rusting, making it a reliable choice for projects designed to operate for decades.
Meeting International Market Expectations
ASTM A123 is a widely recognized standard in global markets, ensuring consistent requirements for coating thickness, adhesion, and surface quality. Products manufactured under this standard are well accepted in international construction and infrastructure projects, especially where durability and compliance are key concerns.
The successful preparation of this customized batch reflects the growing demand for high-zinc galvanized steel solutions that combine standard compliance with project-specific flexibility.
GNEE STEEL supplies a comprehensive range of ASTM A123 high-zinc flat steel bars, including customized sizes such as 60×6 mm, thick zinc coating grades, and secure export-ready packaging solutions. With consistent quality control, professional manufacturing experience, and a strong understanding of international project requirements, GNEE STEEL products are trusted for construction, infrastructure, and outdoor engineering applications worldwide.









