Tianjin Emerson Metal Steel Products Co., Ltd. is proud to present S450GD+Z & G450 Galvanized Steel Sheet Plate Laser Cutting Customization Fabrication under the EMERSONMETAL brand. As a professional sheet metal fabrication factory, we specialize in transforming these high-performance galvanized steel sheets into precision parts through advanced laser cutting, bending, and welding processes. Designed to meet the demands of structural engineering, automotive manufacturing, and heavy industry, our customized parts leverage the unique strengths of S450GD+Z and G450 steel—high strength, corrosion resistance, and excellent formability—delivering reliable solutions for even the most challenging projects.
S450GD+Z and G450 are both high-strength galvanized steel grades, but each is engineered to excel in specific applications. A key feature shared by both is their hot-dip galvanized coating, which forms a protective zinc layer that acts as a barrier against rust and corrosion. This coating ensures long-term durability, even in outdoor environments exposed to rain, humidity, or industrial pollutants, making them ideal for projects requiring low maintenance and extended service life.
S450GD+Z is classified as a high-strength, low-alloy (HSLA) structural steel optimized for cold forming. With a maximum carbon content of 0.2% and a manganese content of 1.7%, it balances strength and ductility: its yield strength of ≥450 MPa and tensile strength of ≥510 MPa enable it to bear heavy loads, while an elongation rate of ≥14% allows for bending and shaping into complex geometries without cracking. This makes it a versatile choice for structural components that require both rigidity and formability.
G450, on the other hand, is a ultra-low-carbon galvanized steel with a carbon content as low as 0.02-0.05%. This ultra-low carbon composition enhances its weldability and surface quality, making it suitable for parts requiring a smooth finish. While its elongation rate (≥9%) is lower than S450GD+Z, it maintains a high yield strength (≥450 MPa) and tensile strength (≥480 MPa), ensuring it can withstand static and dynamic loads in precision applications.
Our fabrication process is tailored to maximize the performance of these materials. Laser cutting is the cornerstone of our service: using state-of-the-art CNC laser machines, we achieve tolerances as tight as ±0.1mm, ensuring parts match your drawings with exceptional accuracy. This process minimizes material waste and produces clean, burr-free edges, reducing the need for secondary finishing. For complex shapes, we combine laser cutting with precision bending and welding—our skilled technicians use techniques that preserve the integrity of the galvanized coating, avoiding damage that could compromise corrosion resistance.
Customization is at the core of our offering. We accept OEM orders based on customer drawings, with flexibility in sheet thickness, size, and design complexity. Whether you need a single prototype for testing or large-volume production for a construction project, we accommodate orders starting from 1 piece. Our quality control measures are rigorous: we source S450GD+Z and G450 steel from certified suppliers, verify chemical compositions and mechanical properties upon receipt, and inspect every finished part for dimensional accuracy and coating integrity.
In summary, our S450GD+Z and G450 galvanized steel fabrication parts combine material excellence with precision manufacturing. S450GD+Z excels in structural applications requiring a balance of strength and formability, while G450 stands out in projects demanding ultra-low carbon content and superior surface quality. Both deliver the corrosion resistance and durability needed to thrive in harsh environments, making them trusted choices for industries worldwide.
Product Main Parameters
Parameter
S450GD+Z
G450
Material Type
High-strength, low-alloy structural steel (cold-forming grade) with hot-dip galvanized coating
High-strength structural steel with hot-dip galvanized coating
High strength, excellent cold formability, good weldability
Ultra-low carbon content, superior surface finish, high corrosion resistance
Processing Services
Laser cutting, bending, welding, drilling, and custom fabrication
Laser cutting, bending, welding, drilling, and custom fabrication
Customization Options
OEM/ODM based on drawings; customizable thickness (0.3-12mm), size, and shape
OEM/ODM based on drawings; customizable thickness (0.3-10mm), size, and shape
Brand
EMERSONMETAL
EMERSONMETAL
Minimum Order Quantity
1 piece
1 piece
Application Scenarios
The unique properties of S450GD+Z and G450 make them suitable for a wide range of industries, each catering to specific needs:
S450GD+Z Applications
Construction and Infrastructure: S450GD+Z is a staple in high-rise buildings, large-span stadiums, airports, and convention centers. Its high yield strength (≥450 MPa) allows for lighter, more efficient structural designs, reducing material usage while maintaining stability. Examples include steel frames, roof trusses, and wall panels, where its galvanized coating resists weathering.
Automotive Manufacturing: Due to its strength-to-weight ratio, S450GD+Z is used in car body panels, chassis components, and door frames. It withstands the stresses of driving while reducing overall vehicle weight, improving fuel efficiency.
Bridge and Heavy Engineering: Bridges, viaducts, and offshore platforms rely on S450GD+Z for structural beams and support systems. Its corrosion resistance protects against water and salt exposure, extending the structure’s service life.
Industrial Equipment: It is ideal for manufacturing storage tanks, pressure vessels, and tower structures. These components require both strength to hold heavy loads and durability to resist industrial chemicals.
G450 Applications
Precision Automotive Parts: G450’s ultra-low carbon content and smooth surface make it suitable for visible automotive parts like fenders and trim. Its weldability ensures strong joints in assemblies, while the galvanized coating prevents rust from road salt.
Oil and Gas Pipelines: G450 is used in pipelines for transporting oil and gas. Its corrosion resistance protects against moisture and hydrocarbons, while its high strength handles high-pressure flow.
Shipbuilding and Marine Structures: In ship hulls and offshore platforms, G450 resists saltwater corrosion. Its low carbon content minimizes brittleness, a critical factor for marine safety.
Electrical and Decorative Components: G450’s clean surface finish makes it ideal for electrical enclosures and decorative steel parts. It can be painted or polished to meet aesthetic requirements without compromising performance.
Frequently Asked Questions (FAQ)
What is the difference between S450GD+Z and G450, and how do I choose the right one? S450GD+Z is a low-alloy steel with higher manganese content, offering better formability and suitability for structural parts requiring bending or welding. G450 is an ultra-low carbon steel with superior surface quality, ideal for precision parts or visible components. Choose S450GD+Z for heavy structural needs; opt for G450 if you need a smooth finish or weldability in corrosive environments. Our team can analyze your drawings to recommend the best grade.
How thick can your laser cutting service handle for these materials? We can laser cut S450GD+Z sheets from 0.3mm to 12mm and G450 from 0.3mm to 10mm. For thicknesses over 8mm, we adjust cutting parameters to ensure clean edges and avoid thermal damage to the galvanized coating. We test-cut samples for thick materials to confirm precision before full production.
Will the galvanized coating be damaged during fabrication? Our processes are designed to protect the zinc coating. Laser cutting uses low-heat, high-speed beams that minimize coating oxidation at cut edges. Bending and welding are performed with tools that avoid scratching the surface. For critical applications, we offer post-fabrication zinc touch-ups (e.g., zinc-rich paint) to repair minor coating damage.
What is the lead time for custom orders? Lead time depends on part complexity and quantity. For simple laser-cut parts (1-100 pieces), delivery takes 3-5 working days. For large orders (500+ pieces) or parts requiring bending/welding, lead times extend to 7-10 working days. We prioritize urgent projects and can arrange expedited production with 24-48 hour turnaround for small batches.
Do you provide material certification for S450GD+Z and G450? Yes, we supply full certification, including chemical composition reports, mechanical property test results (tensile/yield strength), and galvanization thickness certificates. This ensures compliance with international standards (e.g., EN 10346 for S450GD+Z). Certification is provided with every order upon request.
Why Choose Our S450GD+Z & G450 Fabrication Service
Our S450GD+Z & G450 Galvanized Steel Fabrication service stands out for its commitment to quality, precision, and customer satisfaction:
Material Expertise: We source certified S450GD+Z and G450 steel from trusted suppliers, ensuring consistent chemical composition and coating quality.
Advanced Fabrication: Our laser cutting machines and CNC bending equipment achieve tolerances of ±0.1mm, ensuring parts fit seamlessly into your assemblies.
Customization Flexibility: From simple cuts to complex 3D shapes, we adapt to your drawings and offer options like painting or polishing.
Durability Focus: We preserve the galvanized coating during fabrication, maximizing corrosion resistance and extending part life.
Reliable Support: Our technical team provides pre-sales advice (material selection, design optimization) and after-sales support to address any issues.