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.
G550 Galvanized Round Steel Specifications
| Product name | G550 Galvanized Round Steel |
| Diameter | 16-250mm or Customized |
| Length | Customized |
| 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 Tighter tolerances on request Out of roundness standard: ½ of diameter tolerance |
| Finish Line | Straightening machines Milling and chamfering devices Surface control (Circograph, Circoflux) Ultrasonic control device Antimixing control – spectrotest devices Packaging, marking |
| Standard | AISI, ASTM, BS, GB, JIS, EN, AS, etc. |
| Surface Treatment | Galvanized |
| Mechanical Property | Delivery status: Tensile strength (Rm): 570-820 MPa, size depending |
| Bar Processing | Heat treatment: soft annealing, normalising, isothermal, spheroidising and stress relieving treatments, quenching and tempering Peeling |
| Application | * Automatic lathe processing, metal stamping parts processing; * Electronic industry, optical fiber connector, optical disc drive, scanner, medical equipment; * Household appliances, instrumentation industry; * Office equipment (computers, photocopiers, cameras, fax machines, etc.); * Watch components, glasses; * Electronic terminal pin, timer, carburetor; * Decorations, light ornaments, cars, motorcycles, chains; * Clean car sweepers and toys; * Pens, handbag accessories, belt buckles, fishing gear, etc.; * Studs, screws, nuts, pipe joints, spring seats, etc. |

Packing and shipping
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Application Areas
Steel is widely used in steel structure workshops, bridge frames, main structures of high-rise buildings, and infrastructure construction (such as highways, oil and gas pipelines). Its high strength properties ensure load-bearing stability and seismic performance. In ship manufacturing, steel is used to build hull structures, decks, and internal components. Hot-rolled coils rely on their load-bearing capacity to adapt to harsh environments.

Factory workshop
With a commitment to excellence, innovation, and sustainability, the company has established itself as a trusted partner in the international steel industry.After nearly two decades of relentless endeavour, our client base now spans over 110 countries and regions across Europe, the Middle East, South America, and Southeast Asia.











