High-Strength Black Torsion Spring | Custom Heavy-Duty Industrial Spring

High-strength black torsion spring made by a professional spring manufacturer. Crafted from premium alloy steel with excellent durability and corrosion resistance. Custom sizes, torque, and coatings available for industrial and mechanical applications.

• Factory-direct supply with stable quality

• Customizable size, torque, and surface finish

• Made of premium alloy steel for durability

• Black anti-corrosion coating for longer lifespan

• Ideal for industrial, automotive, and fitness equipment