Material: Steel
Surface treatment: oil
Product name
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Commercial Overhead Roller Shutter Doors Torsion Spring
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Material
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ASTM A229 (82B)
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Wire size
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.207 .218 .225 .234 .243 .250 .262 .273 etc
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Inner dia
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1 3/4’ 2’ 3 3/4’ 5 1/4’ 6
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Surface Finished
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Oiled tempered, Electroplate black , Galvanized
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Certificate
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ISO9001-2008
|
Life Cycles
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15000-18000 cycles
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Usage
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Residential Sectional Garage Doors, Commercial Overhead Doors
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Delivery time
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Within 7-15 working days after receiving the deposit .
|
Garage Door Torsion Springs