Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of s420gd+zma hot dipped galvanized steel coil in China. Welcome to wholesale customized s420gd+zma hot dipped galvanized steel coil at low price from our factory. If you have any enquiry about free sample and cheap products, please feel free to email us.
Products Description
S420GD+ZM Zinc Aluminum Magnesium Steel Coil is a high-grade high-strength structural zinc aluminum magnesium steel coil strictly produced in accordance with EN 10346 standard. It features 420MPa minimum yield strength, ultra-high structural bearing capacity, together with premium ZM zinc-aluminum-magnesium alloy coating. Its corrosion resistance is far superior to ordinary galvanized steel and galvalume steel, with edge self-healing anti-rust performance. It is the preferred material for heavy-duty construction, solar energy supporting structures, coastal engineering and high-load industrial equipment, and is one of GNEE STEEL's core hot-selling ZM coated steel products.
Grade S450GD+ZM
S450GD+ZM steel quality: Structural quality for construction
S450GD+ZM steel coating finish:
N (Normal spangle), M (Minimized spangle), R (Regular Zinc-magnesium alloy coating)
S450GD+ZM steel Coil/strip/sheet surface quality:
A (As coated surface), B (Improved surface),C (Best quality surface)
S450GD+ZM steel Coil/strip/sheet surface treatment:
C (Chemical passivation),O (oiling), CO(Chemical passivation and oiling), S ( Seales), P(Phosphated), U(Untreated)
S450GD+ZM steel Coil/strip/sheet coating mass: ZM060, ZM070, ZM080, ZM090, ZM100, ZM120, ZM130, ZM140, ZM150, (ZM160), (ZM175), (ZM200), (ZM250), (ZM300), (ZM310), (ZM350), (ZM430),
S450GD+ZM steel Coil/strip/sheet coating:Zinc-magnesium alloy (ZM) : application of a zinc-magnesium coating by immersing the prepared strip in a molten bath of zinc-aluminium-magnesium.
EN10346 S450GD+ZM steel suitable size: Thickness 0.3mm-3.0mm
S450GD+ZM steel chemical composition
| Grade |
Material No. |
C |
Si |
Mn |
P |
S |
|
S450GD+ZM |
1.0233+ZM |
0.20 |
0.60 |
1.70 |
0.10 |
0.045 |
S450GD+ZM steel Mechanical properties
| Grade |
Material No. |
Yield Strength MPa |
Tensile strength MPa min |
Elongation A80 min |
|
S450GD+ZM |
1.0233+ZM |
450 |
510 |
14 |
Main Advantages of S420GD+ZM ZM Steel Coil
1. Super High Mechanical Strength
S420GD+ZM belongs to high-strength structural grade steel, with stable mechanical properties, suitable for high load-bearing and large-span structural parts, effectively reducing material thickness and saving overall project cost.
2. Excellent ZM Coating Corrosion Resistance
The Zn-Al-Mg alloy coating forms a dense protective film automatically. It has outstanding anti-rust ability in humid, coastal, saline-alkali and industrial corrosive environments, and has unique cut edge self-healing performance to prevent red rust expansion.
3. Good Formability & Weldability
The substrate has balanced strength and toughness, supporting bending, stamping, profiling and conventional welding processes. No coating peeling or cracking occurs during deep processing, suitable for mass industrial production.
4. Long Service Life & Low Maintenance Cost
Compared with conventional GI and GL steel, S420GD+ZM greatly extends service life, reduces later anti-corrosion maintenance and replacement frequency, and improves overall economic benefits of the project.
Main Application Scenarios
Solar photovoltaic support brackets, photovoltaic ground mounting structures
High-strength building purlins, steel structure wall and roof panels
Coastal engineering facilities, highway guardrails, communication tower accessories
Agricultural greenhouses, large storage silos, livestock breeding equipment
Heavy-duty electrical cabinet shells, logistics and transportation structural parts
We are factory of producing Zinc-Al-Mg Solar Bracket. We always have more than 1000tons of Zinc-Al-Mg coil in factory.
1. Certificate: ISO, BV, CE, SGS,SAI,SGS Approved
2. Feedback within 8 hours
3. Best price based on good quality from our own factory
4. Quick delivery and waterproof standard export packing
5. Stock and production are both available
6. Experience for many years, specilized in manufacturing and exporting
7. Customers from many continents, such as North America, South America, Europe, Africa, etc
8. Flexible payment with T/T,L/C,Kunlun bank .
FAQ
Q1: What is S420GD+ZM?
S420GD means high-strength hot-dip structural steel with minimum yield strength 420MPa; ZM stands for zinc-aluminum-magnesium alloy anti-corrosion coating.
Q2: What is the difference between S420GD+ZM and S350GD+ZM?
S420GD+ZM has higher yield and tensile strength, more suitable for high load, large span and higher strength requirement engineering projects.
Q3: What ZM coating weights can you supply?
Conventional ZM100, ZM150, ZM200, ZM250, ZM300 g/m², special coating weight can be customized.
Q4: Is S420GD+ZM suitable for coastal areas?
Yes, the ZM alloy coating has excellent salt spray resistance and edge self-healing ability, very suitable for coastal high humidity and high salinity environment.
Q5: Can S420GD+ZM be bent and deep processed?
It has qualified elongation and good formability, supports conventional bending, slitting, stamping and profiling processing.
Q6: Do you provide quality certificates and MTR reports?
Yes, all batches can be provided with mill test report, standard compliance certificate and export inspection documents.
Q7: What is the delivery time for S420GD+ZM orders?
Conventional spot specifications can be shipped within 7–15 days; customized production orders are about 20–30 days.
Q8: What surface treatment options are available?
Passivation, anti-fingerprint treatment and anti-rust oiling are optional, to meet different processing and usage needs.
Hot Tags: s420gd+zma hot dipped galvanized steel coil, China s420gd+zma hot dipped galvanized steel coil manufacturers, suppliers, factory, galvanized steel weather resistance supplies, galvanized steel producer, galvanized steel personalization price, galvanized steel advantage price, galvanized steel broker, galvanized steel purchase
