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Carbon Steel Heavy-Duty 4Pcs Expansion Anchor
When heavy loads and critical structural connections are at stake, the margin for error is zero. A failed anchor in these applications means more than a minor setback-it means equipment damage, safety violations, and costly project delays. For engineers, contractors, and procurement professionals specifying heavy-duty anchoring systems, the demand is clear: absolute reliability under the most demanding conditions.
The Carbon Steel Heavy-Duty 4Pcs Expansion Anchor is designed to deliver that level of confidence. Unlike standard expansion anchors, this four-piece configuration features a separate expansion sleeve, cone, washer, and threaded stud. This design enables deeper embedment, more aggressive expansion, and superior load distribution, making it the preferred choice for heavy structural applications, seismic zones, and safety-critical installations.
Specifications
|
Item |
Details |
|
Material |
High-Grade Carbon Steel (Class 8.8 / 10.9 available) |
|
Surface Finish |
Zinc Plated, Yellow Zinc, Hot-Dip Galvanized, Dacromet |
|
Structure |
4-Piece Assembly (Sleeve + Cone + Washer + Stud) |
|
Size Range |
M10 x 95mm to M30 x 300mm |
|
Tensile Strength |
≥800 MPa (Class 8.8) / ≥1000 MPa (Class 10.9) |
|
Base Material |
Cracked and Uncracked Concrete, Stone |
Application Scenario: Steel Structure Fixing, Heavy Machinery Mounting, Industrial Equipment Anchoring
Common Challenge: Heavy static loads combined with dynamic forces from machinery operation create continuous stress on anchor points. Standard expansion anchors often struggle to maintain consistent clamping force under sustained tension, leading to creep, loosening, and eventual failure.
Our Solution: The four-piece design separates expansion function from load-bearing thread, allowing for deeper embedment and more aggressive gripping action. Precision-machined cone and heat-treated expansion sleeve work together to deliver superior load capacity. Threaded stud manufactured to Class 8.8 or 10.9 tensile strength ensures the anchor withstands the most demanding industrial applications.
Application Scenario: Seismic Zones, Bridge Infrastructure, Power Transmission Towers
Common Challenge: Seismic events subject anchor points to cyclic tension, shear, and reversal loads. Standard expansion anchors may lose clamping force under such extreme conditions, creating critical safety risks in earthquake-prone regions.
Our Solution: The four-piece design features an expansion sleeve engineered from high-ductility material with optimized geometry. This configuration maintains stable grip even under reverse cyclic loading, providing reliable performance where seismic safety is paramount. The deeper embedment capability adds an extra margin of security for critical infrastructure.
Application Scenario: Cracked Concrete Foundations, Tunnel Linings, Retaining Walls
Common Challenge: Cracked concrete presents a serious challenge for traditional expansion anchors. Cracks can propagate through the anchor zone, causing conventional anchors to lose grip and compromising structural integrity.
Our Solution: The expansion mechanism is specifically designed for cracked concrete applications. The four-piece configuration allows the expansion sleeve to maintain clamping force even when cracks open or shift under load. This makes the anchor suitable for safety-critical applications where concrete cracking is anticipated or unavoidable.
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