304 Stainless Steel Double U Bolt Cross Buckle Fixed U shaped Pipe Clip

Deskripsi

What Is a Double U Bolt?

A double U bolt is a specialized fastening component consisting of two U-shaped rods connected by a central plate or crossbar, forming a rigid clamping structure. Unlike single U-bolts that secure one pipe or object, double U-bolts provide dual-point anchoring for enhanced stability, making them ideal for heavy-load applications where vibration resistance and structural integrity are critical.

These bolts are commonly used in industrial piping, automotive suspension systems, structural supports, and marine applications. Their design distributes clamping force evenly, preventing slippage and reducing stress concentrations on secured components.

Materials

Double U bolts are manufactured from high-strength materials to withstand demanding conditions:

• Carbon Steel (Grade 8.8, 10.9, 12.9) – High tensile strength for industrial and automotive uses.

• Stainless Steel (304, 316, 316L) – Superior corrosion resistance for marine, chemical, and food-grade applications.

• Alloy Steel (AISI 4140, 4340) – Heat-treated for extreme durability in heavy machinery.

• Hot-Dip Galvanized Steel – Zinc-coated for outdoor and underground corrosion protection.

Surface Treatments

To enhance performance and longevity, double U bolts undergo:

• Hot-Dip Galvanizing (HDG) – Thick zinc layer for maximum rust resistance.

• Electroplated Zinc – Cost-effective corrosion protection for mild environments.

• Powder Coating – Adds color and extra wear resistance.

• Passivation (Stainless Steel) – Boosts corrosion resistance by removing surface contaminants.

• Black Oxide – Improves aesthetics and provides mild rust protection.

Specifications

Double U bolts vary in design based on application needs:

• Bolt Diameter: M10 to M36 (metric) or 3/8″ to 1-1/2″ (imperial).

• Leg Length: 50mm to 500mm, adjustable for different clamping depths.

• Center Plate Thickness: 5mm to 20mm, depending on load requirements.

• Thread Type: Full or partial threading (coarse/fine pitch options).

• Load Capacity: 5,000 to 50,000 lbs, depending on material and size.

Application Fields

Double U bolts are essential in industries requiring high clamping force and vibration resistance:

• Automotive & Trucking – Securing leaf springs, exhaust systems, and heavy-duty suspensions.

• Industrial Piping – Anchoring large-diameter pipes in chemical plants and refineries.

• Marine & Offshore – Fastening deck fixtures, railings, and underwater structures.

• Construction & Infrastructure – Reinforcing steel beams, bridges, and scaffolding.

• Mining & Heavy Equipment – Stabilizing hydraulic lines and machinery components.

Excellent Case: Reinforcing a Mining Dump Truck’s Suspension System

Scenario:

A mining company operating 50-ton dump trucks experienced frequent suspension failures due to extreme off-road conditions. The original single U-bolts securing the multi-leaf springs were bending under heavy loads, causing misalignment and unsafe driving conditions.

Solution:

The engineering team replaced the standard U-bolts with high-strength double U-bolts (AISI 4140 alloy steel, hot-dip galvanized, M24 diameter). The dual clamping points distributed stress more evenly across the leaf spring pack, while the heat-treated alloy steel resisted deformation under impact loads.

Outcome:

• Eliminated Suspension Failures – No more bent or broken U-bolts after 12 months of operation.

• Extended Component Life – Leaf spring lifespan increased by 40% due to reduced stress concentrations.

• Improved Safety – Stable suspension alignment prevented dangerous swaying at high loads.

• Reduced Downtime – Maintenance intervals extended from 3 months to over 1 year.

This application demonstrated how double U bolts solve critical load-bearing challenges in extreme environments.

Conclusion

Double U bolts provide superior clamping force and stability compared to single U-bolts, making them indispensable for heavy machinery, automotive, and industrial applications. Their dual-anchor design, material strength, and corrosion-resistant treatments ensure long-term reliability under harsh conditions.

When selecting double U-bolts, consider:
✔ Load requirements (static vs. dynamic forces)
✔ Environmental exposure (moisture, chemicals, temperature extremes)
✔ Material grade (stainless steel for corrosion, alloy steel for strength)

For maximum durability in critical applications, hot-dip galvanized or 316 stainless steel double U-bolts are the optimal choice.