G550 Galvanized Round Steel
Classification :
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Product Details
Galvanized Round Steel G550 belongs to high-strength series galvanized sheet, with high requirements for tensile strength and yield strength. Its minimum yield strength is 560Mpa, minimum tensile strength is 650Mpa, and zinc layer thickness is 275g/m2. It has strong corrosion resistance and is mainly used for building structures with high strength requirements, such as Z-shaped steel, C-shaped steel, floor bearing plate, etc.
Galvanized round steel is a geometric object made of iron or materials with certain strength and toughness by rolling, extruding, casting, hot galvanizing anti-corrosion profile surface and other processes. Hot dip galvanized round steel is produced by advanced galvanizing process, and its surface is glossy and durable. Galvanized round steel products have been used in many fields. The advantage of hot-dip galvanized round steel is that it has a long anti-corrosion life and has been a popular anti-corrosion treatment method to adapt to a wide range of environments. It is widely used in electric power tower, communication tower, railway, highway protection, street light pole, marine components, building steel structure components, substation ancillary facilities, light industry, etc.
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Product name |
G550 Galvanized Round Steel |
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Diameter |
16-250mm or Customized |
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Length |
Customized |
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Advantages |
Dia< 10.00 mm, cold drawn, on request also ground; ISO h8 Dia > 10.00 mm, cold drawn, on request also ground; ISO h9 |
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Finish Line |
Straightening machines |
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Standard |
AiSi, ASTM, BS, GB, JIS, EN,AS ETC. |
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Surface Treatment |
Galvanized |
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Mechanical Property |
Delivery status: Tensile strength (Rm): 570 -820 MPa, size depending |
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Bar Processing |
Heat treatment: soft annealing, normalising, isothermal, spheroidising and stress relieving treatments, quenching and tempering |
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Application |
* Automatic lathe processing, metal stamping parts processing; |

Packaging and Shipping
Our company has obtained ISO 9001 certification for its quality management system, and all of our板材 products are duly certified to CE, EN 10204, ASTM, classification society standards, CASO, BIS, and other relevant international standards. Our customers consistently praise the quality of our products. We are honored to be your trusted, high‑quality partner.

Application areas
Steel is widely used in steel‑structure factories, bridge frameworks, the main structural systems of high‑rise buildings, and infrastructure projects such as highways and oil and gas pipelines. Its high strength ensures structural load‑bearing stability and seismic performance. In shipbuilding, steel is employed to fabricate hull structures, decks, and internal components. Hot‑rolled coil, with its excellent load‑carrying capacity, can withstand harsh operating conditions.

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Focused on the supply and custom processing of metal materials, we leverage reliable sourcing, consistent quality, and efficient service to help clients reduce costs and enhance efficiency, create opportunities for our employees, and empower the development of the industry as a whole.
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