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HANDAN HAOSHENG FASTENER CO., LTD.

Precision Engineered
Galvanized Screws For Industrial Structures

Empowering structural metal fabrication with high-performance fastening solutions. Our galvanized screws deliver unmatched corrosion resistance and structural integrity for the most demanding architectural and industrial environments worldwide.

50M+
Annual Output
120+
Countries Served
7 Days
Sample Lead Time
99.8%
On-Time Delivery

Advanced Fastening Systems
& Structural Reliability

Setting the gold standard in metal structural integrity through superior galvanization.

As a leader in the structural metal fabrication industry, our galvanized screws are engineered to bridge the gap between immense load-bearing requirements and extreme environmental exposure. By employing hot-dip galvanization processes, we ensure that every fastener provides a robust shield against oxidation, making them indispensable for large-scale metal structures.

Our technical edge lies in the synergy of high-tensile alloy steel and precision zinc coating. This combination guarantees that our galvanized screws maintain their mechanical properties under thermal expansion and contraction, ensuring that structural joints remain secure for decades without the need for frequent maintenance.

The Three
Pillars of Excellence

Integrating material science, coating precision, and rigorous testing.

01

Metallurgical Superiority

We utilize aerospace-grade alloy steels to ensure maximum shear strength.

  • Tensile Grade 8.8/10.9: Optimized for high-stress structural loads.
  • Grain Refinement: Reduced internal defects for higher fatigue life.
  • Alloy Consistency: Strict control over carbon and manganese levels.
02

Precision Galvanization

Advanced zinc-coating technology for extreme weather resilience.

  • ASTM B633 Compliant: Guaranteed coating thickness and adhesion.
  • Uniform Distribution: No drip-off or bare spots on thread surfaces.
  • Salt Spray Tested: 1000+ hours of resistance in corrosive saline air.
03

Geometric Precision

Zero-tolerance manufacturing for seamless structural assembly.

  • ISO 965 Thread Standards: Perfect fit with industrial nuts.
  • CNC Cold Forging: Enhanced structural density of the screw head.
  • Automated Optical Sorting: 100% quality check for dimensional accuracy.

Performance Metrics
& Market Analysis

Data-driven proof of our product's superiority in the structural metal sector.

Application Distribution

Product Capability Radar

Technical Data
Detailed Specifications

Comprehensive parameters for professional engineering selection.

Product Model
Material
Coating
Tensile Strength
Diameter
Standard
GS-Structural-X1
Grade 8.8 Alloy
Hot-Dip Zinc
800 MPa
M12 x 50mm
DIN 933
GS-Heavy-X2
Grade 10.9 Alloy
Heavy Galvanized
1040 MPa
M16 x 80mm
ASTM A325
GS-Light-S1
Carbon Steel
Electro-Zinc
600 MPa
M6 x 25mm
DIN 7985
GS-Marine-M1
Grade 8.8 Alloy
Zinc-Nickel
820 MPa
M10 x 40mm
ISO 4014
GS-Ultra-U1
Grade 12.9 Alloy
Hot-Dip Zinc
1220 MPa
M20 x 100mm
ASTM A490
GS-Roof-R1
Grade 5.8 Alloy
Galvanized
500 MPa
M8 x 30mm
DIN 931
GS-Frame-F1
Grade 8.8 Alloy
Zinc-Chrome
810 MPa
M14 x 60mm
ISO 4017
GS-Bridge-B1
Grade 10.9 Alloy
Ceramic-Zinc
1050 MPa
M24 x 120mm
DIN 933

Real-World
Impact

Proven reliability across diverse architectural and industrial infrastructures.

Global Steel Tower Co.

Telecom Infrastructure

Deployment of GS-Ultra series for high-altitude antenna supports in high-humidity zones.

Lifespan +25 Years Cost Reduction 15%

Nordic Bridge Corp

Infrastructure Bridge

Utilized heavy-duty galvanized screws for secondary support beams in saltwater environments.

Corrosion Resistance: MAX Zero Failure Rate

Desert Solar Farm

Renewable Energy

Fastening thousands of solar panels using galvanized screws to withstand extreme UV and sand erosion.

Installation Speed +20% Heat Resistance

Apex Industrial Hall

Commercial Warehouse

Structural framework assembly using GS-Structural series for maximum load stability.

Load Capacity +12% Precision Fit

Oceanic Pier Project

Marine Engineering

Installation of high-zinc fasteners in a high-salinity coastal environment for pier supports.

Salt Spray Passed ASTM A153

Metro Rail Frame

Transport Systems

Using GS-Heavy series for vibration-resistant rail support beams in urban transit.

Vibration Stability 100% Safety Cert

Industry
Applications

Tailored solutions for demanding environments.

Steel Building Frames

Providing essential load-bearing fasteners for prefabricated steel structures and industrial sheds.

Outdoor Lighting Towers

Corrosion-resistant screws for city lighting systems and athletic stadium illumination masts.

Agriculture Silos

High-durability fasteners for grain storage silos and farming metal equipment.

Solar Panel Racking

Secure mounting solutions for large-scale solar arrays in desert and coastal regions.

Marine Gantries

Maximum corrosion protection for shipping port cranes and loading dock structures.

Industrial Scaffolding

High-strength, weather-proof fasteners for temporary and permanent construction support.

Quality Assurance
& Export Standards

Strict Coating Thickness Control

We utilize magnetic induction gauges to ensure every screw meets the minimum zinc layer requirements, preventing premature rust.

Mechanical Stress Verification

Every batch undergoes tensile and torque testing to verify that the screw can handle specified loads without deformation.

Global Certification Compliance

Our products are fully compliant with ASTM, DIN, and ISO standards, ensuring seamless integration into international engineering projects.

Trust Verified

Our facility is audited annually to maintain the highest standards of metal structural fastening production.

✓ ISO 9001:2015 ✓ CE Certified ✓ ASTM compliant

Frequently Asked
Questions

Expert answers to common technical and commercial inquiries.

01

What is the difference between hot-dip and electro-galvanizing?

Hot-dip galvanizing provides a thicker zinc layer, making our galvanized screws far more resistant to outdoor corrosion compared to electro-galvanizing, which is typically used for indoor applications.

02

Can these screws be used in marine environments?

Yes, specifically our marine-grade galvanized screws with zinc-nickel coatings are designed for high-salinity environments to prevent salt-spray oxidation.

03

How do you ensure thread accuracy after galvanization?

We use over-tapping and precision CNC forging to account for the zinc coating thickness, ensuring that the final product maintains a perfect fit with standard nuts.

04

Do you provide material test reports (MTR)?

Absolutely. Every shipment comes with a comprehensive MTR detailing the chemical composition and mechanical properties of the steel used.

05

What is the average lead time for bulk orders?

Depending on the volume and specification, bulk orders typically ship within 15 to 30 days, with sample delivery in as little as 7 days.

06

Can you customize the head style or thread pitch?

Yes, we offer full customization for head types (hex, pan, flat) and thread pitches to meet specific engineering drawings.

Secure Your Metal Structure Today

Get professional grade galvanized screws engineered for longevity and extreme structural stability.

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