Factory Customized Heavy Duty Carbon Steel Galvanized Steel Reverse Hooks Extension Spring For Swing Chair

Tension spring, also called Extension spring, is a mechanical part that uses elasticity to work. Parts made of elastic materials deform under external forces and return to their original state when removed.

Exension spring is a spiral spring bearing axial tension, the hook in the form of side hook spring, long hook spring, English hook spring, German hook spring, semicircle hook spring, duck beak hook spring and so on," hook "is used to ensure the tension source of the stretching spring, generally made of circular section material spring steel, when not bearing load, The coil between the tension spring is generally tight without gap, and the use of stretch resilience (tension) work, to control the movement of parts, energy storage, measurement force, etc., most of the stretch spring is usually under a certain degree of tension, even in the absence of any load.

The following is the necessary information for a tension spring:
(1) free length :(a) total length, (b) total length of the loop, (c) length inside the hook loop.
(2) control diameters :(a) outer diameter, (b) inner diameter, (c) inner diameter of casing.
(3) Wire size "wire diameter".
(4) Materials (type, grade).
(5) number of turns :(a) total number of turns and (b) right or left.
(6) Terminal form.
(7) load in the hook.
(8) Load rate, deflection, pounds per inch.
(9) Maximum stretching length.

HeZhi in Vietnam

Dongguan Hezhi Hardware Co., Ltd. is located in Dongkeng Town, Dongguan City, Guangdong Province, China. It is a hardware factory specializing in R&D design, manufacture and sales of precision components. The company introduces advanced equipment and production technology from Taiwan and abroad, adopts CNC high-precision computer machine, compression spring machine and other mechanical equipment, and employs senior engineers with more than ten years of work experience to debug mechanical equipment and customize production.

Its products are widely used in various fields of hardware, lamps, electronic toys, electrical appliances, bicycles, motorcycles, automobiles, digital products, screw sleeves, sports equipment, mobile phone chargers, inductor components, and wireless charging materials. The main products are: mobile phone transformer charging coil series, wireless charging coil, inductor coil, shaped spring, tension spring, compression spring, compression spring, torsion spring, battery spring, buckle, wave spring, constant force spring spring , stamping parts, and various types of high-precision products, professional customized production to meet customer needs.The company has a full set of first-class production and testing equipment. It has the most advanced CNC automatic spring machine below 10mm in China, and the production line diameter ranges from 0.08MM-10MM. Production equipment mainly includes: CNC automatic spring machine, computer universal machine, heat treatment mesh belt continuous tempering furnace, washing machine. The testing equipment is complete, such as: optical image measuring instrument, secondary element projector, voltage insulation resistance tester, torque tester, pressure tensile tester, salt spray tester, etc., to ensure the quality of the product comprehensively and effectively.

With the business philosophy of honesty, pragmatism and excellence, Hezhi Company is dedicated to serving customers at home and abroad. We hope that the products of Hezhi will help your business to be more brilliant, let us build a bright future in the high-tech era!The testimony is pragmatic and the attitude of HEZHI. Quality service is the pursuit of HEZHI!

We are looking forward to get more cooperation. Please feel free to contact us.