مورّد نوابض الالتواء السوداء المعالجة بالزيت لأبواب المرائب (ذات معدلات الاستخدام العالية)

Residential oil tempered black torsion garage doors springs from CHI, the best global garage door spring supplier, designed to provide smooth, reliable operation and extended cycle life for sectional garage doors. These springs ensure consistent tension, improved safety, and reduced maintenance, making them suitable for high-usage residential settings and bulk wholesale applications.
With 18-year-experience garage door manufacturer, CHI ensures rapid, dependable delivery for wholesale clients, with doors carefully packed in reinforced crates to protect against transit damage. Our logistics and packaging solutions guarantee that each shipment arrives intact, simplifying handling for distributors and installers and supporting efficient project timelines.
————Key Specifications————
• Diameter: 1-3/4", 2", 2-5/8", 3-3/4", 5-1/4", 6"
• Standard springs can more than 16,000 cycles
• Garage door spring material: high carbon steel 82B
• 4 Types Customized Surface Treatment
————Performance & Benefits————
• Oil tempered springs use protective surface treatment to reduce rust and oxidation, helping maintain stable performance and longer service life in daily garage door operation.
• Crafted from 82B high-carbon steel, the springs provide strong fatigue resistance and support up to 16,000 standard cycles or 25,000 high cycles for different usage needs.
• Stenciled dimensions and winding marks make spring size, direction and specification easier to identify, helping installers improve accuracy and reduce on-site selection mistakes.
————CHI Manufacturing & Process Strength————
• Our springs go through strict quality control, including salt spray testing and performance checks, helping wholesale clients receive more durable and consistent spring products.
• We support customizable stenciling for springs up to 50", helping distributors and installers manage warehouse stock, repeat orders and product identification more efficiently.
• Robust packaging and careful handling help reduce shipping damage during long-distance transport, supporting faster, safer and more reliable delivery for garage door commercial partners.
————Contact Us————
China Chi Hardware Co.,Ltd.
Website: https://www.chihw.com/