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Hot-Dip Galvanized Perforated Expanded Metal Sheet

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Hot-Dip Galvanized Perforated Expanded Metal Sheet - Diamond Holes

Superior Anti-Corrosion | Marine Engineering | Coastal Fencing | Factory Direct

ISO 9001:2015 Certified
Hot-Dip Galvanized
Marine Grade

Material

Q235 Low Carbon Steel, Hot-Dip Galvanized

Thickness

0.8mm - 6.0mm (Customizable)

Hole Size

10×20mm - 100×200mm (Diamond)

Zinc Coating

60-120g/㎡ (Customizable)

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Product Catalog (PDF) Specifications (Excel)
ANTI-CORROSION PROTECTION

Superior Corrosion Resistance

Hot-dip galvanized coating provides long-lasting protection against harsh marine and coastal environments

Hot-Dip Galvanizing

Steel sheets are immersed in molten zinc bath at 450°C, creating a metallurgical bond that provides superior corrosion protection compared to electro-galvanizing

Long Service Life

20-30 years in atmospheric environments, 10-15 years in marine/coastal environments with proper maintenance

Zinc Coating Weight

Standard: 60-80g/㎡; Marine grade: 80-120g/㎡; Custom coating weights available for specific corrosion requirements

Salt Spray Resistance

500-1000 hours salt spray test passed, suitable for coastal areas with high salinity and humidity

Complete Coverage

Zinc coating covers all surfaces including edges and perforations, providing complete protection against rust

Self-Healing

Zinc sacrificially protects steel even if coating is scratched, preventing rust spread

PRODUCT ADVANTAGES

Why Choose Our Galvanized Expanded Mesh?

Marine Grade Protection

Specially designed for marine engineering and coastal applications, resistant to saltwater corrosion and harsh marine environments

Diamond Hole Pattern

Perforated diamond holes provide excellent ventilation, drainage, and visibility while maintaining structural strength

High Strength

One-piece expanded structure with no welding points, 30-50% higher strength-to-weight ratio than welded mesh

Anti-Corrosion

Hot-dip galvanized coating provides superior rust protection, ideal for outdoor and marine applications

Ventilation & Drainage

Diamond perforations allow excellent air circulation and water drainage, preventing accumulation

Easy Installation

Lightweight design, easy to cut, bend, and install; reduces construction time and labor costs

MARINE & COASTAL APPLICATIONS

Ideal for Harsh Environments

Marine Engineering

Offshore platforms, ship decking, marine barriers, boat components

Coastal Fencing

Beach barriers, coastal security fencing, waterfront protection

Water Treatment

Filtration systems, drainage panels, water treatment facilities

Bridge & Highway

Bridge decking, highway barriers, noise reduction screens

SPECIFICATIONS

Technical Specifications

Product Name Hot-Dip Galvanized Perforated Expanded Metal Sheet
Material Q235 Low Carbon Steel, Hot-Dip Galvanized
Hole Shape Diamond (Customizable: Round, Square, Hexagonal)
Hole Size Range 10×20mm - 100×200mm
Thickness Range 0.8mm - 6.0mm
Zinc Coating Weight 60-120g/㎡ (Customizable)
Sheet Size Standard: 1m × 2m; Custom: Up to 2m × 6m
Surface Treatment Hot-Dip Galvanized (Additional: Powder Coated, Painted)
MOQ 50 square meters (Negotiable)
Supply Ability 50,000 square meters per month
Certification ISO 9001:2015
Service Life 20-30 years (Atmospheric); 10-15 years (Marine/Coastal)
APPLICATIONS

Application Areas

Marine Engineering

  • Offshore platform flooring
  • Ship decking and walkways
  • Marine barriers and railings
  • Boat components and fittings

Coastal Fencing

  • Beach security barriers
  • Coastal perimeter fencing
  • Waterfront protection
  • Harbor and port fencing

Construction

  • Building facades
  • Safety barriers
  • Walkway gratings
  • Architectural cladding

Infrastructure

  • Bridge decking
  • Highway barriers
  • Noise reduction screens
  • Drainage systems

Industrial

  • Machine guards
  • Work platforms
  • Storage racks
  • Filtration systems

Environmental

  • Water treatment filters
  • Wastewater facilities
  • Erosion control
  • Environmental protection
CERTIFICATIONS

Quality Assurance

Our products meet international quality standards

ISO 9001:2015
Galvanization Certified
Trade Assurance
Verified Supplier

Frequently Asked Questions (FAQ)

Q1: What is hot-dip galvanizing?

Hot-dip galvanizing is a process where steel is immersed in a bath of molten zinc at approximately 450°C. This creates a metallurgical bond between the zinc and steel, forming a protective coating that provides superior corrosion resistance. The coating consists of multiple zinc-iron alloy layers topped with pure zinc, offering both barrier and sacrificial protection.

Q2: What is the zinc coating weight?

Our standard zinc coating weights are:

  • Standard grade: 60-80g/㎡
  • Marine grade: 80-120g/㎡
  • Custom: Available upon request

Higher coating weights provide longer corrosion protection in harsh environments.

Q3: What is the service life?

Service life depends on the environment:

  • Atmospheric (inland): 20-30 years
  • Urban/industrial: 15-25 years
  • Marine/coastal: 10-15 years
  • Submerged: 5-10 years

Proper maintenance can extend service life.

Q4: Can you customize hole sizes?

Yes! We offer customized hole sizes:

  • Standard range: 10×20mm to 100×200mm
  • Hole shapes: Diamond (standard), Round, Square, Hexagonal
  • Open area: 20% - 80% (adjustable)

Send us your requirements for a custom quotation.

Q5: What is the minimum order quantity (MOQ)?

Our standard MOQ is 50 square meters for hot-dip galvanized expanded metal. However, we're flexible and can negotiate based on:

  • Product specifications
  • Customization requirements
  • Trial order potential
Q6: Do you provide salt spray test reports?

Yes! We provide comprehensive testing documentation:

  • Salt spray test: 500-1000 hours (ASTM B117)
  • Coating thickness test: Magnetic gauge measurement
  • Adhesion test: Bend and impact tests
  • Material certificates: Chemical composition and mechanical properties
Q7: What is your lead time?

Our typical lead times are:

  • Standard specifications: 7-10 days
  • Custom orders: 10-15 days
  • Large quantities: 15-20 days (depending on order size)

We offer fast delivery via sea freight, air freight, or express courier.

Q8: How do you ensure product quality?

Quality is our top priority. Our quality assurance measures include:

  • Raw material inspection: All steel tested before production
  • In-process quality control: Regular checks during manufacturing
  • Galvanization control: Coating weight and thickness verification
  • Final inspection: 100% inspection before packaging
  • Certifications: ISO 9001:2015 certified
Q9: What is your packaging method?

Our standard packaging ensures safe delivery:

  • Inner layer: Waterproof paper or plastic film
  • Outer layer: Export-standard wooden pallets or steel frames
  • Protection: Corner protectors and edge guards
  • Labeling: Clear product information and handling instructions
Q10: Do you provide samples?

Yes, we provide samples for quality evaluation:

  • Sample cost: Free for standard products
  • Custom samples: Charged at cost, refundable upon bulk order
  • Shipping: Customer pays shipping cost

Please contact us for sample requests.

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