High Quality Torsion Spring Spring for Garage Door/Roller Shutter Door

• Function: Drive, Restoration
• Material: Oil Tempered Wire
• Usage: Industrial, Auto, Furniture, Motorcycle, Home Appliance, Sectional Door
• Load Type: Torsion
• Production Process: Cold Roll
• Shape: Cylinder
• Model NO.: Door Spring
• Door: Garage Door/Roller Shutter Door/Sectional Door
• Transport Package: Wooden Case
• Specification: As your require
• Trademark: zhongteng&sanjue
• Origin: Anhui, China
• HS Code: 7320909000
• Production Capacity: 300000pieces/Year

Product Description

Door Spring:




Production Details:
 

Material	Steel,Carbon Steel(SWC),cold roller steel ,Stainless Steel(SUS 301,SUS 302,SUS 303 etc),Music Wire(SWP),55 Crsi etc.
Finish	Galvanized,black oxide,chrome plating,electrophoresis etc
Application	Auto Parts, Industrial Machine, Office Equipment, Furniture, stamping parts for cars
MOQ	The small quantity for the test is OK.
Payment Terms	Normally, T/T 30% deposit and balanced 70% before shipment, other payment terms can discuss.
Packing	Inner Plastic bags, Outer Boxes or Wooden box, or per customer's requirement
Lead Time	7-15 days, per customer's quantity
Origin Place	Anhui, China

Production Display:









Company Details:

1.OEM Service.

2. All your inquiries and emails will be replied in 12 Hours.  

3. Experienced staff answers your questions in professional and fluent English. We promise to give the products' details and video to you in time.  

4. With a professional R&D team, we are capable of producing the products you want.

5. Factory directly sale and we believe we can offer high quality and lower price products to you.  

6. Thoroughly examined by experienced professionals to ensure their durability, reliability and lifetime technical guidance.

Certification:



Workshop display:



Production Workflow :





Packing & Shipping:










FAQ

1. How can I get a sample to check your quality?

After price confirmation, you can require for samples to check our quality.
If you just need a sample we have in our stock, we will provide you sample for free, as long as you afford the express freight.

2. How long can I expect to get the customized sample?

After you pay the sample charge and send us confirmed files, and the mold is existing in our factory, the samples will be ready in 10-15 working days;
If the mold is not existing, we need to open a new mold, the samples will be ready in 15-18 working days; The samples will be sent to you via express and arrive in 3-5 working days. You can use your own express account number or prepay us if you do not have an account.

3. What about the lead time for mass production?

Honestly, it largely depends on the order quantity and the season when you place the order. As usual, 20-35working days will be ok. If you are very urgent, we will try our best to do it.

4. What are your terms of delivery?

We accept FOB, CFR, CIF, etc. You can choose the one which is the most convenient or cost-effective for you.

5. What are your terms of payment?
We accept T/T, L/C, Paypal, Western Union, or 30% pre T/T 70% balance before shipment.

With regard to the spring of the lifting door, the lifting door rises and falls steadily under the action of spring force when lifting and falling.