Strong Material For Heavy Loads

Our company, Kunshan Qunju Metal Products Co., Ltd., produces this product. The model number is QJ-GD1003. The torsion spring is the core part of the garage door balance system. This bracket holds the torsion spring in place. It lets the spring store and release force safely. We have two types of this bracket. The first is the hook opening bracket. The second is the track bracket. They go to different installation positions. We use three materials to make this product. The first is regular steel. The second is stainless steel. The third is galvanized steel. All these materials have very high strength. We did pulling tests. Our bracket can handle over 200 kilograms of twisting force. Many customers tell us our bracket is stronger than similar products in the market. That is because our steel thickness reaches 3 millimeters. Many others only use 2 millimeters.
Surface Finish And Corrosion Protection
We have two surface finish choices for this product. One is zinc plating. The other is powder coating. The zinc plated version can last 72 hours in a salt spray test without rust. The powder coated version has a smoother look. You can choose the color. Many of our European and American customers choose black powder coating. It matches their garage door color better. Our company has a formal quality control department. We have professional testing tools. We do sampling tests for each batch of torsion spring mounting brackets. The tests include size accuracy, twist strength, and surface adhesion. Before packing, we do sampling inspection. We do not always do 100% full inspection. That is because the production process for this bracket is already very mature. Sampling is enough to guarantee quality. This decision is based on the product itself.

Product Data Table
|
Parameter |
Details |
|
Model Number |
QJ-GD1003 |
|
Types |
Hook opening bracket, track bracket |
|
Materials |
Steel, stainless steel, galvanized steel |
|
Steel Thickness |
3 mm |
|
Max Twist Force |
Over 200 kg |
|
Surface Finishes |
Zinc plated (72h salt spray), powder coated |
|
Surface Colors (Powder) |
Custom (black popular) |
|
Inspection Method |
Sampling inspection |
|
Warranty |
1 year or more |
Why Choose This Bracket
This product is built to last. The 3mm steel gives you extra safety. A broken bracket can cause the spring to fly off. That is dangerous. Our bracket holds the spring firmly. We use high-quality raw steel. Our R&D team of five people designed the bracket shape to spread the load evenly. The hook opening type has a reinforced curve. The track type has extra welding points. We test each batch with a pulling machine. We also check the zinc coating thickness with a coating thickness gauge. Our factory has over 6,000 square meters of space. We have 60 workers. Our yearly export is over 6 million US dollars. We support OEM and ODM. You can send your own drawing. We also provide sample service. You pay the shipping cost for samples. We accept third-party inspection. We offer transport insurance for shipping damage. The lead time for standard orders is 15 to 30 days. Payment is 30% deposit and 70% balance. We accept USD, EUR, GBP, and CNY. Packing is in wooden crates or cartons. This torsion spring mounting bracket is a key safety part for any garage door system.
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