Oil Tempered Garage Door Torsion Spring Manufacturer | Custom Sizes Available
ASTM A229 High-Carbon Steel | Wire Size 0.192”–0.625” | ID 1-3/4” to 6”
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.