Hangzhou bluesteel machine co., ltd
Hangzhou bluesteel machine Co., Ltd . forming the machine,creating the future
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Roller Shutter Garage Door Tension Spring Right / Left Direction Long Life
• Torsion spring material: Carbon steel & Stainless steel&sSpring steel
• Torsion spring wire dia:0.1-8mm
• Torsion spring size: all size/AS you required
• Torsion spring surface Finish: zinc plated (trivalent chromium or sexivalent chromium), nickel plated,oxidation plated, plain finish , Black Oxide and so on
• Torsion spring plating: BlackOxided, Zinc,Chrome, Galvanized, Nickel,Dacromet, Delta-Tone, Geomet,Ruspert
• Torsion spring packing: as you required
• Torsion spring sample lead time: within 7—10 days
• We also could produce according to buyer's drawing or samples/Non standardcompression springs.
| Material | Spring steel |
| Wire diameter | 6.5-8mm |
| Outside diameter | 90mm |
| Total coils | 70-90 |
| Active coils | 70-90 |
| Direction | Right/left |
| Hardness | HRC 38-40 |
| Surface treatment | oiled |
| Load type | torsion |
| Style | cylinder |
| Usage | overhead garage door,construction |
