邯鄲釘釘貿易有限公司 (喜力德) 

Roofing Screws and Bi-Metal Self-Drilling Screws
Roofing Screws
Material:

Typically made from high-grade carbon steel or stainless steel, ensuring strength and durability.
Surface Treatment:

Galvanization: Provides a zinc coating to protect against rust and corrosion.
Painted Coating: Often color-matched to roofing materials for aesthetic purposes and additional corrosion resistance.
Function:

Designed to securely fasten roofing materials such as metal sheets, tiles, or shingles to the substrate.
Features sharp threads and a pointed tip for easy penetration and firm grip.
Application Scenarios:

Used in residential, commercial, and industrial roofing installations.
Ideal for attaching metal roofing panels, securing insulation, or fixing underlayment.
Advantages:

Durability: High resistance to weather conditions and corrosion, especially with appropriate surface treatments.
Strength: Capable of holding roofing materials securely even under strong wind or heavy load.
Versatility: Available in various sizes and head styles to suit different roofing materials and designs.
Bi-Metal Self-Drilling Screws
Material:

Bi-Metal Construction: Combines two types of metals—usually a hard stainless steel body with a carbon steel tip.
Stainless Steel Body: Offers superior corrosion resistance.
Carbon Steel Tip: Provides the hardness necessary for efficient self-drilling.
Surface Treatment:

Passivation: Enhances the natural corrosion resistance of stainless steel.
Zinc Plating: Additional layer of protection to prevent rust and improve longevity.
Function:

Self-drilling screws eliminate the need for pre-drilling holes, simplifying the installation process.
The bi-metal design ensures both drilling efficiency and long-lasting performance.
Application Scenarios:

Ideal for attaching metal to metal or metal to wood in various construction settings.
Commonly used in the installation of metal roofing and siding, HVAC equipment, and metal framing.
Advantages:

Efficiency: The self-drilling feature speeds up installation, reducing labor costs and time.
Corrosion Resistance: The stainless steel body ensures longevity even in harsh environments.
Strength and Precision: The carbon steel tip provides precise drilling capabilities, reducing the risk of material damage and ensuring a secure fit.
Versatility: Suitable for a wide range of applications, including both interior and exterior installations.