• Model No.：Wh-1.1
• Type：Flat, Coil, Compression
• Thickness：0.05~0.85mm
• Width：2.0~60mm
• Min.Order：1000PCS
• Term of Payment：T,T, Paypal
• Transport Package：Lifting Doors and Windows
• Origin：China
• HS Code：7320909000
• Production Capacity：3000000 Pieces,Year

Constant Force Spring for Lifting Doors and Windows:

The structure of the coil-type puller is: a combination of a stainless steel spring with a fixed preset tension and a positioner. inverted lifting window.

This kind of puller can be installed quickly, without tools for adjustment. In particular, the bolt is very easy to pull down and connect to the load-bearing slider. At the same time, the interactive coil spring has the characteristics of preventing the load-bearing block from dislocation, twisting, and locking.


Roll-type pullers are generally divided into mobile and fixed types. Mobile type: it is hidden in the window sash and moves with the window sash; fixed fan: the lifter has a separate slider, the lifter is fixed in position, and the slider moves with the window sash. Generally,it will reach American AAMA Level 2Notice:
Because this type of spring is a non-standard product, the same shape has different sizes. QianYe has specialized in research and development and production of constant force springs for 20 years, and can customize constant force springs with a thickness of 0.075mm-0.85mm and a width of 4mm-50mm.You can also provide drawings or data (the thickness of the spring, width, working length, inner diameter, outer diameter), and the customer service staff can provide you with a quotation and customized cycle. Welcome to consult.
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Production range:
Thickness: 0.075mm~0.85mm
Width: 4mm~50mm
Length: Customized according to customer requirements

Delivery Date:
1.Orders from the date of payment of deposit, the cycle is generally 7-10 days.
2.Urgent order processing: We have urgent orders to speed up the processing process, to ensure the fastest delivery of goods to your hands.

Sample charging standard:
Qianye currently has thousands of samples, if customers need samples just we have inventory, free to provide.
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QY.SPRING Order Process

About Qianye Precision Metal Co., Ltd

Shenzhen Qianye Precision Metal Co., Ltd. was established in 2006 to supply high-quality stainless steel springs for many fields. Through continuous efforts, 19 patent certificates and 4 spring equipment software copyrights have been granted by the State Intellectual Property Office, and an enviable industry influence has been built. The company designs and manufactures a wide range of power springs, constant force springs, constant torsion springs, variable force springs and Motor Brush Spring. Qianye works in close partnership with its customers in developing bespoke solutions to meet their individual needs. In order to offer better services, it has been continuously investing in production technology and supply chain. The company itself is a stainless steel raw material manufacturer. Because of the support of raw materials, it is not subject to material restrictions when making spring products; special material requirements can be developed and manufactured; furthermore, the delivery time is greatly shortened. Quality is of the utmost importance and Qianye are certified to ISO9001, ISO14001 and national high-tech enterprise with a big emphasis on the training of its employees. Its spirit is "treat people with sincerity and create things with sincerity" to ensure it strives for excellence.

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