Extension sofa springs
High quality and good service.
Functions:sofa parts;
Min. Order:1 tons;
Transportation:by sea;
DeliveryDate:3 days;
PaymentType:T/T;
Material: carbon steel and stainless steel
Style: Coil
Load Type: Compression
Material: Steel
About :sofa spring\ seat spring\snake spring
Extension springs are the direct opposite of compression springs, in that they are close-coiled helical springs that extend under a pulling force. When designing extension springs consideration must be given to stress due to initial tension, stress and deflection of hooks, special coiling methods, secondary operations, and allowance for over-stretching at assembly.