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A torsion spring is a spring that works by torsion or twisting; that is, a flexible elastic object that stores mechanical energy when it is twisted. The amount of force (actually torque) it exerts is proportional to the amount it is twisted. There are two types. A torsion bar is a straight bar of metal or rubber that is subjected to twisting (shear stress) about its axis by torque applied at its ends. A more delicate form used in sensitive instruments, called a torsion fiber consists of a fiber of silk, glass, or quartz under tension, that is twisted about its axis. The other type, a helical torsion spring, is a metal rod or wire in the shape of a helix (coil) that is subjected to twisting about the axis of the coil by sideways forces (bending moments) applied to its ends, twisting the coil tighter. Some familiar examples of uses are the strong helical torsion springs that operate clothespins and traditional springloaded-bar type mousetraps. Other uses are in the large coiled torsion springs used to counter-balance the weight of garage doors, and a similar system is used to assist in opening the trunk (boot) cover on some sedans. Small coiled torsion springs are often used to operate pop-up doors found on small consumer goods like digital cameras and compact disc players. We manufacture and supply torsion spring that are durable in quality and can withstand forces such as twist or rotation. Torsion springs are further able to endure lateral and angular forces. These are characterized by their properties to increase the diameter as well as body length under changing temperature or pressure conditions. Our torsion springs are available in various dimensions. The Torsion Spring manufactured by us is also capable of providing unparalleled quality service. Moreover, our range is offered at industry leading price. Features: 1.Various of torsion spring and wire form, even punch fitting of hareware 2.Usage of torsion Spring: auto,motorcycle,industry,ariculture,mine,furniture,etc. 3.high quality and competitive pricing 4.Small and huge orders as well as OEM/ODM accepted 5.Customised designs are welcome for torsion spring,so send us your specifications now 6.we have passed ISO9001:2008 and SGS certification.