G550 Galvanized Round Steel
Our mill-direct production network supplies premium structural-grade G550 galvanized round steel bars explicitly engineered for ultra-high tensile solar racking systems, heavy industrial framing, and high-stress outdoor architectural configurations. We guarantee a minimum 550 MPa yield strength threshold, continuous microstructural zinc-adhesion uniformity, and rigorous dimensional straightness constants backed by our direct 2-Hour Rapid Quote technical protocol.
Tired of waiting days for price quotes while your strict project bidding deadline runs out? Terrified of low-grade long structural bars that snap under stress loading, fail critical site Elcometer micron inspections, and ruin your professional reputation? Secure your mill-verified testing records instantly.
PRODUCT DETAILS
High-Tensile Galvanized Round Steel Three-Standard Cross Matrix
| American Standard (ASTM Spec) | European Standard (EN Spec) | Japanese / Chinese Equivalent (JIS/GB) | Diameter & Mechanical Scope | Zinc Coating & Environment Target |
|---|---|---|---|---|
| ASTM A653 Grade 50 | EN 10346 S350GD+Z | JIS G3302 SGCC / Q355 Galvanized | 6mm – 250mm / Medium Structural Load | Z120 – Z275 g/m² Coverage |
| ASTM A653 G550 (Ultra High-Tensile) | EN 10346 S550GD+Z | JIS G3302 SGD570 / High-Yield Solid Rod | 6mm – 300mm / Min 550 MPa Yield Verified | Z180 – Z275 Heavy Coating / Anti-Marine Rust |
| ASTM A653 Grade 80 | EN 10346 S450GD+Z | JIS G3302 High-Stress Custom Base | 8mm – 200mm / Industrial Infrastructure | Heavy-Duty Passivated Dry Coating Finish |
Technical QA/QC Verification
• EN 10204 3.1 Material Test Certificates (MTC) & Salt Spray Tracking: All commercial shipments are coupled with fully documented original MTC data sheets itemizing matching heat numbers, continuous chemical composition properties, mechanical elongation ratings, and multi-hour salt spray corrosion resistance profiles. Fully structured to support independent inspection reviews from SGS, Bureau Veritas, or Intertek.
• Sovereign Capital Security Framework: To insulate commercial engineering contractors and procurement firms from international currency changes and delivery scheduling anxieties, we execute all high-volume productions under 100% Irrevocable Letters of Credit (L/C) at sight financial protocols.
Internal Protection & Ocean Logistics
• Rigid Iron Cradle Palletization & Timber-Lock Structural Chocking: Finished long bundles are nested inside heavy structural iron alignment chassis or robust wooden end-cases to prevent linear bowing or shifting during container terminal crane operations. All internal container spaces are heavily secured with continuous cross-braced steel strapping and solid timber chocks to withstand high-seas rolling.
• Complimentary 14-21 Days Extended Destination Port Demurrage Buffer: SXY Steel Group proactively secures pre-cleared, extended 14 to 21 days of container free-time demurrage parameters on your ocean Bill of Lading, giving your customs agent an open window to handle processing without incurring costly storage fines.
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
Our company has passed ISO9001 quality management system certification, Our Mill product with CE/EN10204 / ASTM/Classification society certificate/CASO/BIS etc certificate.All the customers give good appreciation to our products.We are glad to be your good partner.
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.
Free Structural Framework Nesting Optimization Analysis & High-Tensile Drawing BOM Audit
Designing solar tracking support fields, heavy structural industrial racking, robust outdoor frameworks, or replying to an international high-volume steel procurement tender? Upload your target rod lengths, precise diameter h-tolerances, structural cut lists, or raw engineering Bill of Materials (BOM) drawing files below. SXY Steel Group’s technical engineering division will perform an exhaustive nesting assessment to minimize scrap metal loss and safeguard your commercial budget limits.
