Heavy-Duty Cement Steel Nails for Reliable Picture Frame Hanging

• Customization: Available
• Type: Concrete Nail
• Material: Steel
• Model NO.: 1-1
• Applicable: Wall, Cement
• Whether to Support Customizationz: Support
• Transport Package: Container
• Specification: 1-30
• Trademark: Huilin
• Origin: Handan, Hebei
• HS Code: 0101101010
• Production Capacity: 50000

Product Description

Expert Insights on Concrete Nail Applications

Cement steel nails are robust fasteners crafted for the most challenging substrates like concrete, brick walls, and stone. Through advanced cold heading and quenching hardening processes, these nails boast exceptional strength and impact resistance. They are indispensable in construction, decoration, and various industrial applications. Below is a detailed exploration of their core features, technical specifications, common usage scenarios, and operational guidelines:

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1, Core Structure and Material Characteristics

1. Material and Heat Treatment

Core material: Constructed from medium carbon steel (e.g., C45) or alloy steel (e.g., 40Cr), with a precise carbon content of 0.42% -0.50%, ensuring formidable strength.

• Heat Treatment Process:

• Total Quenching: The steel nail is heated to 850-900 ºC, then cooled rapidly to reach a surface hardness of HRC52-58 (Rockwell hardness), coupled with a bending strength of at least 1200MPa.

Tempering Process: Secondary heating at 200-300 ºC alleviates internal stress, augments toughness, and prevents brittle fractures.

2. Structural Optimization Design

• Nail Tip:

Triangular Pyramid Shape: Featuring a tip angle of 30°, combined with a surface high-frequency quenching layer (hardness HRC60+), it minimizes penetration resistance and heightens drilling efficiency.

Spiral Groove Engraving: Select models (like textured cement nails) incorporate spiral grooves on the nail body using rolling technology, increasing mechanical grip with the substrate and enhancing pull-out resistance by 30%.

• Nail Cap:

Butterfly/Hexagonal Head: Expands the stress area, distributes hammering stress evenly, and prevents the nail cap from embedding into the board's surface (e.g., gypsum board).

Anti-Slip Rolling Pattern: The cap's top features diamond rolling patterns, which, when paired with a rubber hammer, minimize the risk of hand slipping.

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2, Technical Parameters and Performance Comparison

[Table]
Comparison of Advantages Across Cement Steel Nails, Ordinary Round Nails, and Expansion Bolts with Their Parameters
Fit for substrates like concrete, brick walls, granite wood, thin steel plates, concrete, and hollow bricks. They can be directly driven into high hardness substrates without pre-drilling required.
Tensile Strength: Cement nails offer ≥ 800N/mm², ordinary nails only ≤ 400N/mm², and the strength varies for expansion bolts (typically 500-1000N/mm²). Cement nails match the strength of expansion bolts but increase installation efficiency by 5 times.
Shear Strength: Cement nails deliver ≥ 600N/mm² compared to ordinary nails ≤ 300N/mm², with variations for expansion bolts (typically 400-800N/mm²). Their shear performance surpasses expansion bolts, making them ideal for lateral stress scenarios.
Temperature Resistance: Ranges from -40 ºC to 150 ºC for cement steel nails, -20 ºC to 80 ºC for ordinary nails, and -20 ºC to 120 ºC for expansion bolts. Superior temperature resistance makes cement nails perfect for outdoor and industrial settings.
Cost Efficiency: Each cement nail costs 0.1-0.3 yuan, compared to 0.02-0.05 yuan for ordinary nails and 0.5-2.0 yuan per expansion bolt set, highlighting their exceptional comprehensive cost-effectiveness.