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Galvanized Garage Door Torsion Spring | Zinc-Coated | ASTM A229 Steel | Factory Direct
Product Description
Our galvanized garage door torsion springs are designed for long-lasting durability, corrosion resistance, and clean appearance. Produced with ASTM A229 high-carbon steel, each spring is zinc-coated through an advanced galvanizing process to protect the metal surface from rust, moisture, and oxidation—ideal for humid climates and coastal regions in Canada and the United States.
Compared with standard oil-tempered springs, galvanized torsion springs offer a smoother finish, reduced maintenance, and better aesthetic appeal. They are widely used for residential sectional garage doors, commercial rolling doors, and OEM replacement systems.
With 11 production lines in China and an additional coating facility in Vietnam, we offer fast delivery, stable quality, and full OEM/ODM customization.
Factory Price Sectional Door Parts Garage Door Springs Torsion
Tianjin Wangxia Spring Co., Ltd. has been specializingin the production of springs for
12 years. It is a leading manufacturer of Garage door springs. 11 spring production
lines to ensure delivery speed. At the same time, our factory also continues to
develop ne 36,000 w products. At present, one-piece spring, square wire garage door torsion
spring and other products have received good feedback from customers at home
and abroad.
Product Details
We aim to produce the garage door springs with the highest cost-performance ratio in the market, creating a sustainable future for our customers.
1️⃣ SPRING STEEL WIRE
82B high-carbon spring steel is used as the base material to ensure excellent elasticity and torsion strength.
Before production, each coil of wire is tested for diameter accuracy and surface quality.
This guarantees that the galvanized torsion springs maintain consistent performance and meet ASTM A229 standards.
High-quality steel wire ensures durability and long-term stability during daily garage door operation.
2️⃣ COILING FORMING
Using advanced CNC coiling machines, the spring wire is formed with precise pitch and stable wire tension.
Automatic forming ensures the spring length, inner diameter, and torsion values remain consistent across batches.
The smooth surface created during this process is ideal for the later galvanizing finish.
Accurate coiling also ensures compatibility with standard North American garage door systems.
3️⃣ HEAT TREATMENT
The coiled springs are tempered at controlled temperatures to increase toughness and fatigue resistance.
Heat treatment improves the spring’s ability to withstand repeated opening and closing movements.
This step ensures the galvanized springs maintain stable torque without deformation during long-term use.
The process enhances durability and overall product lifespan.
4️⃣ GALVANIZED SURFACE COATING
A zinc-coating layer is applied to protect the spring surface from moisture, oxidation, and corrosion.
The galvanized finish offers a clean silver appearance that stays bright even after extended use.
This coating is especially suitable for humid climates, coastal regions, and cold environments in Canada and the U.S.
Compared with oil-tempered springs, galvanized springs maintain better anti-rust performance and cleaner appearance.
5️⃣ INKJET MARKING
Each spring is printed with detailed specifications, including wire size, length, inner diameter, and L/R winding direction.
Clear marking helps installers quickly identify and match replacement parts.
Color-coded cones and customized labels can be added based on OEM requirements.
This step improves installation accuracy and enhances product traceability.
6️⃣ CONE INSTALLATION
Cones are assembled using precision alignment equipment to ensure secure and accurate installation.
Both winding cones and stationary cones are fitted according to customer requirements and door system specifications.
Proper cone installation guarantees smooth torque transfer during garage door operation.
Each batch undergoes visual checks to ensure flawless assembly.
7️⃣ PACKAGING
Finished galvanized springs are packed in reinforced wooden crates to prevent bending or surface damage.
Protective wrapping, plastic caps, and foam separators can be added as needed for safer long-distance shipping.
The packaging is designed to withstand container transport and ensure the springs arrive in perfect condition.
Bulk orders are arranged neatly in labeled wooden boxes for efficient unloading.
8️⃣ TRANSPORTATION
We support multiple incoterms including EXW, FOB, CIF, DAP, and DDP shipping to the U.S. and Canada.
Springs are typically loaded in wooden crates and shipped by container to ensure stable and timely delivery.
With production bases in China and Vietnam, we offer flexible logistics options to reduce transit time and import costs.
Reliable transportation ensures your garage door inventory is maintained without interruption.
Application
Garage door springs are the core of the lifting system, balancing the door's weight mainly through torsion springs (for most overhead doors) or extension springs.
They also provide buffering for safety. Specifications should be customized according to the door's weight. Rust-proof and UV-resistant treatments are needed in humid or
outdoor environments. Regular inspection and lubrication are required, and replace them every 5-8 years to prevent aging.
Our Cases - what we finished
So far we have cooperated with 200 companies from industries . Although they differ from industry and country, they choose to work with us for the same reasonwe offer high-quality products and service at more competitive prices.
ACHIEVEMENTS
ACHIEVEMENTS
ACHIEVEMENTS
FAQ
The target market of our brand has been continuously developed over the years. For more information, please reach our team, we are more than happy to help.