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High quality and goodservice.
Functions:sofa parts;
Min. Order:1 tons;
Transportation:bysea;
DeliveryDate:3 days;
PaymentType:T/T;
Material: carbon steel andstainless steel
Style: Coil
Load Type: Compression
Material: Steel
About :sofa spring\ seat spring\snake spring
Extension springs are the direct opposite of compressionsprings, in that they are close-coiled helical springs that extend under apulling force. When designing extension springs consideration must be given tostress due to initial tension, stress and deflection of hooks, special coilingmethods, secondary operations, and allowance for over-stretching atassembly.
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