| Introduce | 
        
                                    
                        Basic Info. | Model NO.  | CH-TS04 |  | Direction | Left&right hand |  | Surface Treatment | Black (Oli tempered) & Galvanized & Powder coated |  | Transport Package | Wooden Case |  | Origin | Jiangsu, China |  
   | Wire Diameter | 4.8-13mm |  | Length | As your requirement |  | Trademark | JDX |  | Material | 82B |  | HSCODE | 7320209000 |  
   - Engineered for maximum application range.
 - Minimum 10,000 cycles, at +/- 7.5lbs of target door weight.
 - Springs are made of steel coils with aluminum cones.
 - Black oil tempered, galvanized and powder coated wire provides a clean durable surface finish.
   | Product name | China Factory Cheap Customized Color Torsion Spring Garage Door Extension Springs for Rolling Shutter Doors |  | Diameter | 1-3/4", 2", 2-5/8", 3-3/4", 5-1/4", 6" |  | Material | 72B, 82B, 65Mn |  | Surfae finish | Oli Tempered, Galvanized, Powder Coated |  | MOQ | Small qty is also welcome and acceptable.  |  | Certification | ISO9001 |  | Package | International standard packaging, wooden case and do as customers' requirements |  | Payment term | 30% prepayment in advance, 70% before shipping  |  
  Product Description| Name | Torsion Spring |  | Surface treatment | Plating nickel/ zinc/ black/ gold/ silver/ brass/ chrome, electrophoresis coating plastic, oiled to prevent rust, etc |  | Diameter | 1-3/4'',2", 2-5/8'', 3-3/4,5-1/4'', 6" |  | Packaging | Inner Packing: Plastic bag; Carton Box Outer Packing: Cartons, wooden boxes or pallets |  
  
                 
             
            
 |