Active Member
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[China]
Address: No.10 DongKeng KeJi Road, DongKeng Town, Dongguan City, Guangdong Province
Contact name:Wendy
Dongguan Hezhi Hardware Co., Ltd. |
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Factory Custom Brake Titanium Steel Return Tension Coil Spring With Dual Pull Hook
Tension spring characteristics
Tension 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. This initial tension determines how tightly the stretch
spring is wound without any load.
The rings are tightly wrapped so that they can be stretched by
force, and each end is wound in a Loop. The following is the
necessary information for a stretch spring:
Parameters:
(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.
A typical example is the Extension Spring
| Material | Stainless Steel (SUS304,301.316,310,201,631, ect) | |
| Paino/Music Steel | ||
| Carbon Steel | ||
| Iron | ||
| Finished | Electroplating | Zinc ,Nickel ,copper ,black |
| Heating | In different tempurture | |
| Cleanning | ||
| Rust-Proof | ||
| Clean | ||
| Passivation | ||
| 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 | |
| Wire diameter Range | 0.05mm-20mm | |
| Design | According to customer's drawing or sample | |
| Tolerance | As customer's request | |
| Packaging | PE Bag+carton Box Inner plastic bags and Outer carton | |
| 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 or can be used in all kinds of products. | ||
| 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 | Good elasticity high hardness | Electronic part, home appliance, Locks, toys or can be used in all kinds of products. |
Music Wire (SWP) | N/A | SWP-A SWP-B | High tensile resistance Long worklife | Application for all kinds of small products |
| Copper Wire | Phosph or copper wire( C519R), Nickel plated copper, Bronze | N/A | Good conductivity of electrical | Electronics, electrical applicance |
| Iron | Galvanize iron wire | Customized or normal material | Soft material | Craft spring Decoration wire |
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 use CNC computer spring machine to produce a variety of compression spring, extenion spring, torsion spring, battery spring, touch button spring, wire forming spring, constant force spring, die spring, stamping parts and a variety of high precision hardware products, widely use in hardware, lamps, electrical, appliance, bicycles, motorcycles, cars, mobile phones, digital products and ao on. And expreely, our price is very competitive because we are manufactory. We are the source. You can welcome to visit our website dghezhi.en.alibaba.com, which includes our company profiles, history and something latest designs.
The testimony is pragmatic and the attitude of the people. Quality
service is the pursuit of the people!
* Inquiry and consulting support.
* Sample testing support.
* View our Factory.
* Training how to instal the machine, training how to use the
machine.
* Engineers available to service machinery overseas.
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.
