Garage Door Torsion Spring, Overhead Door Spring, Garage Door Spring manufacturer / supplier in China, offering High Quality Garage Door Springs From Hefei Wangqin Spring Factory, Hardware Accessories Garage Door Torsion Spring, Garage Door Parts Garage Door Torsion Spring and so on.
Min. Order / Reference FOB Price | |
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5000 kg | US $1.60/ kg |
Local Area: | Hefei, Anhui, China |
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R&D Capacity: | OEM, ODM, Other |
Payment Terms: | LC, T/T, PayPal |
Type: | Door Spring |
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Material: | High Carbon Steel |
Function: | Drive, Restoration, Measurement |
Product Description
Introduction to Sectional Garage Door Extension SpringsSectional garage doors are hinged, and they bend in the tracks as the door opens and closes. Many of these doors are counterbalanced with extension springs, also designated "stretch springs," and they have seven characteristics. The length is the measurement of all the coils pressed together. This, along with the inside diameter of the coils and wire size - the thickness of the wire from which the springs are made - determine the stretch, the distance the spring is extended - normally half the door height, and pull, the force the spring pulls when stretched its normal length. The type of ends determine how the ends of the spring are mounted. The initial tension is the percentage of pull needed to separate the coils. This is determined by the pitch with which the springs are wound. On sectional garage door springs, this normally is 15 percent. For example, a 100-pound pull spring requires 15 pounds of weight to separate the coils; when a door is open, the two springs will support 15 pounds of door weight without any stretch.
Most extension springs are made of oil tempered wire. These are normally coated or painted. Some springs are made of galvanized wire.
Garage door extension springs counterbalance the weight of garage doors to make them easy to open and close. One end is secured to a stationary angle or bracket, and the weight of the door pulls the other end.
NameSectional Garage Door Extension Springs from Hefei Wangqin Spring Diameter1 3/4" ,2" , 25/8" , 3 3/4" , 5 1 /4" , 6" and othersMaterial72B ,82B , 60Si2MnA,65Mn EtcCustomizableCan made by your drawings, samples and dimensionsSurface TreatmentWhite zinc plating, Nickel plating, Chrome plated, Cataphoresis, Become black, Powder coating, Apply oil ,paint or as customers' requestApplication Garage doors,overhead doors,industrial door installation ,roller shutter doors in matching torsion and extension springCertificationSGS ,ISO9001MOQAny small trial order is welcomeDeliver time7-15 workdays based on MOQPackageStandard Packaging, Pallet Wooden Carton Or as per customers' requirementsPayment term30%T/T deposit,70% before shipping
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Q: What is your warranty?
A: One year after sale service.
FAQ
How to make Torsion Spring as per your enquiries?
1,Pls provide me main specification as follows:
•Wirediameter
•Material
•Body length
•Maximum outside diameter, minimum inside diameter
•Number of coils
2, detailed drawing or real samples is very useful.
3, door dimension(door width&height,door weight and lifting systerm) is also Ok, we can custom designed.
Q: Are you a manufacturer ? Do you Accept OEM?
A: Yes, as a professional manufacturer, we have been in spring field for over 14years and we accept OEM! Just give us your design, we will make samples for you soon.
Q:What is your strengths?
A: •Competitive price
•High quality
•Good communication with customers
•Best after-sales service
Q:What is your packing?
A: •Standard packing,PE bags, plywood cases, wooden carton, pallet.
•based on your requirements.
Q: How long is your delivery time?
A: Within 3-5 days after order /confirm/ied. Of course, it depends on the actual quantity.
Q: What payment method do you accept?
A: we accept T/T, western union or paypal before production. Other payments are negotiable
Q: What is your terms of payment ?
A:•Payment<=1000USD, 100% in advance.
•Payment>=1000USD, 30% T/T in advance ,balance before shipment.
Q: What is your sea shiping port?
A: SHANGHAI port usually; any problems contact us ASAP.