Galvanized steel sheet is a metal material that prevents rust by plating zinc onto its surface. It is widely used in construction, home appliances, automobiles, and other industries.

There are two main processes: hot-dip galvanizing and cold-dip galvanizing.
Hot-dip galvanizing: The steel sheet is immersed in molten zinc. The zinc layer is thicker (typically 40-900 g/m²), offering strong corrosion resistance and making it suitable for outdoor or humid environments.
Cold-dip galvanizing: A zinc layer is formed through electroplating. The surface is smoother but thinner, and the cost is lower.

Hot-dip galvanized (HDG) steel plate is carbon steel coated with a zinc layer through immersion in molten zinc (typically 450°C/842°F). Key features:
Superior corrosion resistance (zinc sacrificially protects steel)
Durable coating (typical lifespan: 20-70 years)
Excellent adhesion (metallurgically bonded)
Cost-effective protection vs stainless steel
Standards: ASTM A123 (US), EN ISO 1461 (EU), JIS H 8641 (Japan)
Manufacturing Process
Surface Preparation:
Alkaline cleaning → Acid pickling → Fluxing
Galvanizing:
Immersion in 445-465°C zinc bath (3-10 minutes)
Post-Treatment:
Quenching → Passivation → Inspection
Applications
Transmission towers
Bridge components
Industrial walkways
Agricultural equipment
Marine structures
HVAC ducting

275Z Galvanized Sheet
1. Material Overview
275Z galvanized sheet refers to steel with a 275 g/m² zinc coating (total both sides), offering:
Superior corrosion protection (heavy-duty coating)
Good formability and weldability
Suitable for harsh environments
Typical base material: Mild steel (e.g., DX51D, S350GD)
Key Standards: EN 10346 (Europe), ASTM A653 (USA), JIS G3302 (Japan)
Coating Specifications
Parameter Value
Coating Designation Z275 (275 g/m² total)
Zinc Thickness ~20μm per side
Coating Type Hot-dip galvanized
Spangle Options Regular/Minimized/Zero
Common Applications
Heavy-duty roofing & cladding
Transmission towers
Highway sound barriers
Agricultural buildings
Industrial storage tanks
Bridge components

Galvanized steel is a steel sheet coated with zinc, primarily for corrosion protection. It's primarily made from ordinary carbon structural steel. The zinc layer is deposited on the steel sheet through various processes to extend its service life.
Material Classifications
Hot-Dip Galvanized Steel Sheet
Electrogalvanized Steel Sheet
Alloyed Galvanized Steel Sheet
Applications
Applications requiring corrosion resistance include lightweight steel structures for buildings, highway guardrails, and steel silos.

ASTM A36 is a low-carbon structural steel widely used in construction, bridges, and machinery manufacturing. Its typical chemical composition includes carbon (≤0.25%), manganese (0.80-1.20%), etc., with a yield strength ≥250 MPa and a tensile strength of 400-550 MPa.

ASTM A36 is an American standard carbon structural steel with a yield strength ≥250 MPa, tensile strength 400-550 MPa, and elongation ≥20%. It contains ≤0.25% carbon and possesses good weldability, machinability, and low-temperature toughness. It is widely used in construction, bridge building, and machinery manufacturing.

A516 Gr70 Steel Plate Core Parameters

Standard: ASTM A516/A516M, specifically for medium and low temperature pressure vessels

Strength: Tensile strength 485-620 MPa (70-90 ksi), Yield strength ≥260 MPa

Chemical Composition: Carbon (C) ≤0.27%, Manganese (Mn) 0.85-1.20%, Phosphorus (P) ≤0.025%, Sulfur (S) ≤0.025%

Delivery Condition: Usually normalized

ASTM A283 Grade C is a low-carbon steel plate used in structural and pressure vessel applications where moderate strength and good weldability are required. It is part of the ASTM A283 standard, which covers four grades (A, B, C, D) with increasing strength levels.
Key Mechanical Properties
Property ASTM A283 Grade C
Yield Strength (min) 30,000 psi (205 MPa)
Tensile Strength (min) 55,000–75,000 psi (380–515 MPa)
Elongation (min, in 2") 23%
Carbon Content (max) 0.24%
Manganese (max) 0.90%
Note: Thicker plates may have slightly reduced yield strength.
Common Applications
Storage tanks (water, oil, gas).
Boiler shells & pressure vessels (low-pressure).
Structural components (brackets, frames).
Piping & general fabrication.

SS400 Carbon Steel Plate Core Parameters

Standard: Japanese Standard JIS G3101, corresponding to Chinese Standard Q235B

Strength: Tensile strength 400-510MPa, yield strength ≥245MPa (thickness ≤16mm)

Chemical Composition: Carbon ≤0.30%, sulfur/phosphorus ≤0.050

Thickness: 1-200mm (customizable)

Carbon steel plate is based on carbon steel, with a carbon content ranging from 0.02% to 2.11%. It can be categorized as low-carbon steel, medium-carbon steel, and high-carbon steel based on its carbon content. Its mechanical properties vary with its carbon content: higher carbon content increases hardness and strength, but reduces plasticity.
Processing and Applications
It can be processed using processes such as flame cutting and CNC stamping, making it suitable for applications in shipbuilding, mining machinery, and other fields.

304 (UNS S30400) is the most widely used austenitic stainless steel offering:
Excellent corrosion resistance
Good formability and weldability
Non-magnetic properties (when annealed)
Hygienic surface capabilities
Key standards: ASTM A240, EN 1.4301, JIS SUS304
Purchasing Considerations
Specify ASTM A240 certification
Choose between 304/304L based on welding needs
Consider surface finish requirements
Verify dimensional tolerances (ASTM A480)
Common Applications
Food processing equipment
Kitchen appliances and sinks
Architectural panels and trim
Chemical containers
Medical equipment
Automotive trim

Type 410 stainless steel is a martensitic stainless steel (12% chromium alloy) offering:
Good corrosion resistance (moderate)
High strength and hardness (heat-treatable)
Magnetic properties
Excellent machinability
Key standards: ASTM A240 (sheet), AMS 5504, UNS S41000
Key Specifications
Property Value
Density 7.7 g/cm³
Melting Point 1480-1530°C (2700-2790°F)
Thermal Conductivity 24.9 W/m·K
Electrical Resistivity 0.59 μΩ·m
Common Applications
Cutlery and knife blades
Valve components and fasteners
Pump shafts and turbine blades
Mining equipment
Aircraft components

The corrosion resistance of stainless steel primarily comes from the passive film formed on the steel surface by the chromium element (content of at least 10.5%), which isolates the metal from the outside world and prevents oxidation. However, once the passive film is destroyed, the corrosion resistance will decrease. Different grades, such as 304 and 316, can adapt to different corrosive environments by adjusting the chromium and nickel content.

Title: AR400-500 for Construction

Description: Withstand impact & abrasion in tough environments. Plates for excavators, loaders, bulldozers. Get a free wear solution quote!

The High Hardness Wear-Resistant 3Cr13 Hot Rolled Stainless Steel Plate is a martensitic stainless steel that uniquely combines good corrosion resistance with high hardness and impressive wear resistance. Designated as 3Cr13, its name indicates a medium carbon content (approximately 0.30%) and about 13% Chromium.