Swing Chair Heavy Duty Galvanized Tension Coil Spring With Hook

Basic Information
Place of Origin: China
Brand Name: HEZHI
Certification: Rohs&Reach
Model Number: N/A
Minimum Order Quantity: 1000pcs
Price: $0.11 - $0.25USD/ Piece/Pieces
Packaging Details: PE Bag with Carton Box
Delivery Time: 7-15 work days
Payment Terms: T/T, L/C
Supply Ability: 10,000,000 Piece/Pieces per Month According to the order
Detail Information
Product Name: Factory Customized Heavy Duty Carbon Steel Galvanized Steel Reverse Hooks Extension Spring For Swing Chair Application: Hardware ,Furniture, Industrial, Auto, Car ,Toy And More
Size: ,0.1mm-80mm Usage: Industrial, Automobile
Wire Dia: 0.05mm-20.0mm Material: Iron, Stainless Steel, Carbon Steel ,Piano Wire Or As Required
Finish: White Zinc Plating, Nickel Plating Or Customized Color: White, Black, Silver, Gold Or As Required
Style: Spiral, Coil Sample: Offer
High Light:

Galvanized Tension Coil Spring


Chair Tension Coil Spring


Galvanized tension spring with hook

Product Description

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.

Material Stainless Steel (SUS304,301.316,310,201,631, ect)
Paino/Music Steel
Carbon Steel or as your requirments
Iron etc
Finished Electroplating Zinc ,Nickel ,copper ,black and so on
Heating In different tempurture
Cleanning Passivation,Clean,Rust-Proof
Process CNC Machine, digital control multi-functional computer spring coiling machine, mechanical automatic spring coiling machine, spring grinding machine, heat treatment equipment, large hot coil spring production line, quality testing instruments.
Application used in computer, electronics, home appliances, cameras, instruments, doors, motorcycles, harvesters, automobiles, and other industries to control the movement of machine parts, ease impact or vibration, storage energy, measure the size of force and so on!
Wire diameter Range 0.05-20mm
Design According to customer's drawing or sample
Packaging  inner plastic bags and outer carton




















Swing Chair Heavy Duty Galvanized Tension Coil Spring With Hook 0

Material Type Model number Characteristic Application
Stainless Steel (SUS) With or without magnetism shine or nitrided surface, dark surface 201, 202 etc. Less nickel plated, could not proceed salt spray test General using craft and toys
301, 302, 303, 304, 305, 310, 316, 321 High temperature resistance Electronic part, home appliance, Locks, toys 
410, 420, 430 etc. High strength OEM aments and tableware products
630, 631 etc. High heat stability Electrical application or product use under high temperature
Carbon Steel (SWC) Low carbon steel, high carbon steel, nickel plated steel, Galvanized wire 55CrSi, 60SizMNA, 

Good elasticity

high hardness

Electronic part, home appliance, Locks, toys 

Music Wire





High tensile resistance

long worklife

Application for all kinds of small products
Copper Wire Phosph or copper wire( C519R), Nickel plated copper, Bronze   Good conductivity of electrical


Electrical applicance

Iron Galvanize iron wire Customized or normal material Soft material

Craft spring

Decoration wire

Production Detail


Swing Chair Heavy Duty Galvanized Tension Coil Spring With Hook 1

Reference Drawing


Swing Chair Heavy Duty Galvanized Tension Coil Spring With Hook 2


Company Profile


Dongguan Hezhi Hardware Co., Ltd. is located in Dongkeng Town, Dongguan City, Guangdong Province, China. We are a worldwide import and export trading company.We belong to a group of companies established in the early 20th century.Our company is a spring factory specializing in R&D design, amnufacturer and sales, introduced equipment technology and hired senior engineers with more ten years of experience to highly cooperate with various customized ODM and OEM products.

Our company 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

Should any of these items be of interest to you, please let us know. We will be happy to give you detail.

As a very active manufacturers, we develop new designs nearly every month, if you have interest in it, it's my pleasure to offer.

to debug mechanical equipment and customize production.


Slogan:“The testimony is pragmatic and the attitude of the people. Quality service is the pursuit of the people!Swing Chair Heavy Duty Galvanized Tension Coil Spring With Hook 3

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HeZhi in Vietnam

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Our Service
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Pre-Sales Service

* Inquiry and consulting support.
* Sample testing support.
* View our Factory.

After-Sales Service

* Training how to instal the machine, training how to use the machine.
* Engineers available to service machinery overseas.

Packing & Delivery
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1. Are you a factory or a trading company?

A1: We are the manufacturer of the hardware. We can provide OEM service and also provide samples for testing. Last but
not least, we produce not only rivet nut column, but aslo al kinds of springs.

2.Small order quantity is workable

A2: From the initial sample design of the spring to the mass production of the springs, we can quickly reach your manufacturing goals and immediately provide the best products because we have an excellent production management system and expertly trained technical personnel.
3.Committed to high quality production
A3: To keep HeZhi Springs at the forefront of the industry, we have implemented a stringent internal quality control system and regularly import the latest manufacturing equipment and instruments. Through our precise manufacturing technology and expert mold making process, we provide our customers with the best products and service.
4.Efficiency in manufacturing
A4: Our company's machinery and equipment are controlled by CNC computers. In order to respond to international needs and standards, we continuously update and upgrade our equipment every year. Our machines effectively increase production capacity and save on manufacturing costs. The manufacturing department is the most important core of the whole company and by treating it with utmost importance, we reap great benefits in manufacturing efficiency.
5.Excellent customization services
A5: HeZhi's R&D team designs and completes customized products according to the needs of customers. From the selection of materials to the function of the products, we can design and develop products to suite different customers' requirements. We are constantly involving ourselves in all aspects of the industry because only by having a complete view and analysis of the industry, can there be innovative breakthroughs.

6. Payment term
A6: *T/T : 30% pre T/T, 70% before delivery.
       *Trade Assurance

7. Packing
A7: *A: Poly bag, Plstic tray ,small box, carton.
      *B: According to customers' requirements.

8. Delivery
A8: *Sample: 7-10 days after deposit received.
      *Batch goods: 12-15 days after samples approved.

9. Do you provide samples? Is it free or extra?
A9: We can provide free samples when we have them in stock, but you have to pay the freight.


Contact Details

Phone Number : 18379949013

WhatsApp : +8618379949013