
USA Standard Automatic Hardware Fittings Heavy Duty Garage Door Torsion Spring. Customized Size: Available in various sizes including 2', 2' 5/8, 3' 3/4, and 6' to meet specific needs. Diverse Surface Treatments: Options include nickel, zinc, black, gold, silver, brass, chrome plating, electrophoresis, and oiling. High-Quality Steel Material: Manufactured from durable steel using hot roll production process for superior strength. Customized Surface Finish: Surface can be galvanized or treated with various plating options to prevent rust. Mold Making Service: We accept custom mold requests with costs returnable upon reaching sufficient quantity. Flexible Packaging: Standard cartons available, or custom packing as per customer request. Industry Experience: Over 30 years in stamping industry with 10+ years specialized in garage door hardware. Global Market Reach: Products exported to USA, Russia, Poland, South Africa, Australia, and many other regions.