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| Product Name | Torsional Spring |
| Wire diameter | 4.5-12mm |
| Outside Diameter | 40/52/60/75/80/95 |
| Free Length | 300-3500mm |
| Application | Garage Door/Shutter Door/Rolling Door |
| Certification | ISO 9001 :2008 |
| Surface treatment | Black Oil temper/ Zinc |
| MOQ | 50pcs |
| Lead Time | 20-25 days |
| Product Keywords | roll up garage door spring replacement,garage door winding bars |










Q:Are you trading company or manufacturer ?
A:We are the OEM factory in Jiangsu, China, and has more than 40 years experience in processing spring.
Q: What information should I give to you for inquiry?
A: If you have drawings or samples,pls feel free to send us,and tell us your special requirements such as material ,tolerance,surface treatments and the amount you need,ect .
Q:When is the delivery time?
A:Delivery will occur between 15 and 20 days from order date. Faster delivery time can be arranged if needed.
Q:Do you have any MOQ limit?
A:Yes. it depends on the products’size and production process.
Q: How can I get one sample for testing?
A:Free sample: We’d love to send you free samples which have in stock, and you just need arrange shipment.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
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