Certification: : TS16949, ISO9001, 14001, 13485 Application: Automobile/aviation/medicalequipment/furniture / mechanical Professional manufacturer of all kinds of coil springs, spring steel, compression springs, torsion springs, extension springs, annular springs, disc springs, Application to Automobile/aviation/Medical-equipment/furniture /Mechanical and Production WIRE DIAM.: 0.01-80mm Wholesale Large Tension/Extension Springs, Customized Design 1> Our products can be made according to your requirement. 2> Superior quality, competitive prices, first-class craftworks, safe Package and prompt delivery and reasonable price. 3> We do quotation within 24 hours and welcome your any inquiry at Any time. 4> Various kinds of Tension Springs 1) With the largest wire diameter is 60mm 2) Different shapes of hooks available 3)ISO9001, 14001, TS16949, 13485 5> Please provide us the following information before we quote to you. (1). Wire diameter (2). Material (3). Free length (4). Maximum outside diameter, minimum inside diameter (5). Number of coils Tension Springs Features: 1) With the largest wire diameter is 80mm. 2) Different shapes of hooks available 3) Normal ratio between wire diameter and inside diameter is 1: 2.5, and We have successfully achieved 1: 1 More detail please call or email to me directly, Get best price from me!