China Spring Factory Custom 316 Stainless Steel Precision Machining Corrosion Resistant Valve Extension Spring

Product Description

Product Description

Extension Spring/Tension Spring

What is an Extension Spring?
 
An extension spring is a mechanical spring designed to resist stretching and return to its original length when the load is removed. It is usually made with closed coils and has hooks or loops at both ends for attachment. When pulled axially, it stores energy and exerts a pulling force. Extension springs are widely used in machinery, automotive, furniture, and appliances to provide tension, return motion, and counterbalance.

Applications of Extension Springs

Extension springs are widely used to absorb tension, provide return force, and maintain clamping or pulling motion in countless mechanical devices.
 
Common applications include:
 
Automotive components (throttle return, door handles, brake systems)
Furniture and hardware (sofa recliners, cabinet latches, hinges)
Household appliances (washing machines, microwaves, toys)
Industrial machinery and tools
Fitness equipment
Electronic devices, valves, and pumps
Vending machines, medical equipment, and automation systems
 
They are essential parts for resetting mechanisms, tension control, and load balancing.

·Model:HF-ES/TS****

Main Products

Company Profile

The company relies on 10 years of technological accumulation and has passed ISO9001 and IATF16949 certificates In 2022. Huifeng Springs focuses on providing customized one stop sevices solutions for the automotive, electronics, mechanical and other fields, empowering customers with product upgrades through cutting-edge technology, intelligent manufacturing and efficient services, and helping to enhance the value of the global industrial chain. We are driven by technology and based on quality, continuously creating core competitiveness for our customers, and committed to becoming a leader in the field of precision spring and hardware manufacturing! 

If you are interested in any of our products or would like to discuss a customer orders, please feel free to contact us, We are looking forward to establishing successful business relationships with you in the nearly future.

Packaging & Shipping

FAQ

Q1:What types of springs can your company manufacture?
A1:We manufacture a wide range of springs, including compression springs, extension springs, torsion springs, strip forms,wire forms,Etc. We also have the capability to manufacture customized springs to meet your specific needs.

 

Q2:What materials do you use to manufacture springs?
A2:We can work with a variety of materials, including stainless steel, carbon steel, alloy steel, brass, and nickel alloys,etc. If you have a specific material requirement, please let us know and we can discuss whether we can accommodate your needed.

Q3:How can I get an sample for testing? What is your nearest shipping port?
A, Free sample: We'd love to send you free samples which have in stock, and you just need to arrange the shipment or pay the shipping fee.
B, Charged sample: $100 for sample develop, and refund after mass production.

Q4:What is spring constant and how is it measured?
A4:Spring constant is a term used to describe the stiffness of a spring. It is a measure of the amount of force required to compress or stretch a spring by a certain distance. Spring constant is an important parameter used in designing and selecting springs for various applications. Knowing the spring constant allows engineers to determine the load capacity of a spring and its deflection under a given load. This information is critical for us to design springs that can meet the specific requirements, such as maintaining a constant force, absorbing shock, or returning a component to its original position. Check out our blog post to learn more about spring constant formula.

Q5:What is your lead time for manufacturing custom springs?
A5:Our lead time can vary depending on the complexity of the spring, the type and the quantity you require. Generally, we aim to provide a quote within 24-48 hours of receiving your request and can manufacture most custom springs within 7-25days.
 
Q6:What is your quality control process?
A6:Huifeng Spring  commitment to excellence and our customers requires the active involvement of all employees working together to continually improve the quality of our products while maintaining to meet or exceed customer expectations. Because of our commitment to an effective quality management system, we have been awarded ISO certification to manufacture springs, wire forms, etc. We operate a quality management system that complies with ISO 9001:2015 and ISO 9001:16949.

Q7:What is your minimum order quantity?
A7:The MOQ is based on yours design /materials .This means that even if you only require a small quantity of springs, there will be a minimum charge to cover our setup costs.
 
Q8:What is your shipping policy?
A8:We can ship our springs anywhere in the world and use a variety of shipping methods, including UPS, FedEx, and DHL. We can also work with your preferred shipping provider if you have one.

Wire Diameter:	0.1mm – 12mm  or customized
Outer Diameter:	1.0 mm – 80mm or customized
Total Length:	Customized
Material:	Carbon steel, Music wire, Stainless steel 304/316, Galvanized steel
Spring Rate (k):	Custom according to requirements
Hook Type:	Machine loop, Cross loop, Side loop, Extended hook, Custom hook
End Treatment:	Grinding, polishing, shot peening, plating
Tolerance:	Length ±0.1mm, OD ±0.05mm
Quality Control :	ISO 9001:2015,REACH ,ROHS,etc .
Application:	Industrial machinery, automotive, electronics, furniture, fitness equipment, valves, pumps