Specifications

types of compression spring
1.ISO9001 ISO14001
2.High quality raw material
3.Prompt delivery

types of compression spring

 

YISEN has specialized in producing types of compression spring for many years.   types of compression spring combined the high-quality materials and perfect design,using top-grade raw materials. OEM for all kinds of   types of compression spring is welcome!

 

1. types of compression spring  

Wire-retracting spring is also called the power spring or the spiral spring , which is made by the steel ribbon, it can be divided into the natural type power spring and the prestress force type power spring due to its relaxed shape. The natural type power spring is made directly by the wrapped steel,  while the prestressed force type power spring will finalize the shape first, then reverse the direction into a spiral shape, its shape after spread out just looks like the letter S , hence it is also known as the S shaped spring. 
When we use the spiral spring, we need to use a case to confine its outer diameter, the middle of the spring is connected to the line shaft. Once the line shaft and the spring do relative rotation by the external force, the spring will be rolled onto the line shaft and store power. After the external force disappears, the spring generates torque force to drive the line shaft, and output the storage power via the line shaft at the same time. 
Comparing under the same specification spring, the prestress force type can store more torque force of  25%~40% , it can provide more rotation turns under the same space.

 

2.Specifications of tension coil springs

 

Company Introduction	Yisen Spring Inc. The professional spring manufacturer with over 12 years experience; We have through the ISO 9001 & ISO 14001 Certificates; Lead quality supplier evaluated by Alibaba; Provide OEM & ODM service, etc. welcome your inquiry anytime.
Product	Name	Wire-retracting spring /Spiral spring/constant force spring/Power spring/Free spring for toys, etc.
	Usually we can supply production range as below
	Thickness	0.05~2mm
	Width	3~85mm
	Length	As per customer's requirement
	If you have any drawing, detailed data or special requirements of spiral spring, kindly just let us know, we could produce as your drawing or design for you.
	Usage	1) toys 2) take-up spring 3) electronic wire take-up spring 4) clock and timer 5) hose reel 6) car safety belts
	Packing	PE bag + Hard carton + Pallet or As your requirement
	Quality	High quality with reasonable price and good service, Rated as a high quality supplier by the customers, and who came from Europe, North America, South America, China, etc.
Sample		1) For the standard parts, we can provide a few pieces for free if we have in stock. Otherwise we will charge sample cost and shipping cost in advance. 2) If you have your own sample, we can make it according to it, and the lead time is about 7~15 days.
Mass production		According to the MOQ 1,000pcs of the company, the lead time is about 5~25 days!
Trade term		EXW, FOB Shenzhen Sea Port/HK, or send to you by express.
Our service		1) Quick responses with full attention within 24 hours. 2) OEM or ODM orders are welcome. 3) Samples and production status updated promptly. 4) Fast and safe delivery for samples and orders. 5) Best service before and after sales. Our pursuit: Same price, our quality is much more better! Same quality, our price is much more cheaper!

 

     How to place an order:

1.What you need to do is send us your design drawing, samples or design concept draft, after that we will assess your products and budget unit price for you.(see bottom charts )

2. We'll communicate with you again about if there is a need for sample making after your approval.

3. Production time of samples: 3 days for simple samples and 7 to 10 days for complicated samples which need mold open.

4. For customers of first cooperation, we can make a proof for free to show our capacity and high efficiency service to you. As for particularly complicated samples, we will communicate with you separately.

5. Mass production delivery: usually delivery time is 10-15 days, but we can try 7-10 days if it is a rush order. It depends on production plan if it's a sizable order.

6. Packaging: as to complicated products, we can special design based on your packing requirement.

7.Our freight advantage:

  a) If you are worrying about freight trouble because of your small quantity goods, it will be the best choice to use express. We will offer you the cheaper express price than the official UPS or DHL; for example, 100kg goods only need 6usd/kg and 50kg goods only 7usd/kg. If you just place an order for 1000pcs, you only need to pay very little express charges and gain the fastest delivery.

  b) If you place a large order, we will help you ship goods by sea, and we are very experienced to handle with it, we can organize all kinds of goods a whole container and recommend best vessels agent for you.

 

About the payment:

 

 

TT 30% deposit 70% after receiving the copy receipt,  West Union or as your request

 

 

 

Package of tension coil springs

 All springs will be carefully packed and shipped to you with PE bags.

 

Products Display

 

Knowledge of compression spring

 

 

 

 

About us :

  

Dongguan City Yisen Precision Spring Co., Ltd. (Since 1998) is a high technology hardware company with more than 200 workers, and has been specializing in designing and manufacturing springs, hardware and spring making machines. We've gained worldwide customers' trust with our high design level, top class quality, high grade services and competitive prices, which make us become the supplier for many famous companies in many business lines in the world. Our company has been certified by GB/T19002-1994 and ISO9002:1994 management system in order to upgrade the whole quality management and provide you with the best quality products and the most valuable services!

 

  Your satisfied is our bussiness!