Plug-end garage door extension springs are manufactured from high-carbon steel, designed for strength, durability, and stable performance. The plug-end design provides a compact and secure connection, making installation easier and more space-efficient compared to hook or loop ends. These springs are widely used in residential garage doors and are available in multiple sizes with customizable specifications.

Garage door torsion springs made of 82B high-carbon steel, compliant with ASTM A229 standard. Available in sizes from 1-3/4” to 6” ID, with wire diameters 0.192”-0.625”. Long lifespan up to 17,000–18,000 cycles.

Garage door torsion springs made of 82B high-carbon steel, compliant with ASTM A229 standard. Available in sizes from 1-3/4” to 6” ID, with wire diameters 0.192”-0.625”. Long lifespan up to 17,000–18,000 cycles.

Garage door torsion springs made of 82B high-carbon steel, compliant with ASTM A229 standard. Available in sizes from 1-3/4” to 6” ID, with wire diameters 0.192”-0.625”. Long lifespan up to 17,000–18,000 cycles.

Garage door torsion springs made of 82B high-carbon steel, compliant with ASTM A229 standard. Available in sizes from 1-3/4” to 6” ID, with wire diameters 0.192”-0.625”. Long lifespan up to 17,000–18,000 cycles.

Garage door torsion springs made of 82B high-carbon steel, compliant with ASTM A229 standard. Available in sizes from 1-3/4” to 6” ID, with wire diameters 0.192”-0.625”. Long lifespan up to 17,000–18,000 cycles.

Garage door torsion springs made of 82B high-carbon steel, compliant with ASTM A229 standard. Available in sizes from 1-3/4” to 6” ID, with wire diameters 0.192”-0.625”. Long lifespan up to 17,000–18,000 cycles.

Garage door torsion springs made of 82B high-carbon steel, compliant with ASTM A229 standard. Available in sizes from 1-3/4” to 6” ID, with wire diameters 0.192”-0.625”. Long lifespan up to 17,000–18,000 cycles.

Garage door torsion springs made of 82B high-carbon steel, compliant with ASTM A229 standard. Available in sizes from 1-3/4” to 6” ID, with wire diameters 0.192”-0.625”. Long lifespan up to 17,000–18,000 cycles.

Industrial Door Torsion Springs Inner diameters: 1-3/4"–6", wire 0.192"–0.625" Custom lengths & specs available 11 production lines, fast 7–10 day delivery ASTM A229 82B steel, lifespan 70,000–80,000 cycles OEM/ODM & bulk customization supported

Inner diameters: 1-3/4"–6", wire 0.192"–0.625" Custom lengths & specs available 11 production lines, fast 7–10 day delivery ASTM A229 82B steel, lifespan 15,000–18,000 cycles OEM/ODM & bulk customization supported

Tianjin Wangxia Spring Co., Ltd. - With 20 years' expertise, we're China's leading garage door spring manufacturer. We specialize in: Sectional door torsion springs Rolling door torsion & extension springs Industrial door torsion springs Product Specifications: ✔ Inner diameters: 1-3/4" to 6" ✔ Wire diameters: 0.192"-0.625" (customizable) ✔ Custom lengths available Production Capacity: • 11 dedicated production lines • Fast delivery: 1-2 containers in 7-10 days • ASTM A229 compliant 82B high-carbon steel • 70,000-80,000 cycle lifespan Services: ✓ OEM/ODM supported ✓ Bulk order customization