Sectional Garage Door Extension Springs in White Color From China Manufacturer

Basic Info

Model NO.	QY2019
Production Process	Cold Roll
Shape	Coil
Direction	Left Hand & Right Hand
Size	as Your Require
Transport Package	Standard Packing, Pallet
Specification	72B, 82B, 60Si2MnA, 65Mn
Trademark	QY
Origin	Hefei Anhui China
HS Code	7320909000
Production Capacity	5000pairs/Week

Product Description

Introduction to Sectional Garage Door Extension Springs

Sectional 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.

• Engineered For Maximum Application Range.
• Minimum 10,000 Cycles, At +/- 7.5lbs Of Target Door Weight.
• Plug-end extension spring with safety containment rod
• For use with single-panel garage doors, toy hauler doors, etc.
• Black Coated, Oil Tempered Wire Provides A Clean Durable Finish.
• Clear, Easy To Read Spring Markings For Easy Identification.
• Weigh door by disconnecting springs and placing scale under door
• Match measured door weight with same spring weight capacity
• Double-looped ends for stronger connection to lift cables

Name	Sectional Garage Door Extension Springs in White Color from China Manufacturer
Diameter	1 3/4" ,2" , 25/8" , 3 3/4" , 5 1 /4" , 6" and others
Material	72B ,82B , 60Si2MnA,65Mn etc...
Customizable	Can made by your drawings, sample and dimension
Surface Treatment	White zinc plating, Nickel plating, Chrome plated, Cataphoresis, Become black, Powder coating, Apply oil ,paint or as customers' request
Application	garage doors,factory lift doors,industrial door installation ,shutter doors in matching torsion and extension spring
Certification	ISO9001
MOQ	Any small trial order is welcome
Deliver time	7-15 workdays based on MOQ
Package	Standard Packaging, Wooden Carton Or as per customers' requirements
Payment term	30%T/T deposit,70% before shipping

• Springs for your sectional garage door - replacement extension springs based on your garage door weight simple installation - install new or replace old, rusty springs quickly (professional installation recommended)
• Simple installation - install new or replace old, rusty springs quickly (professional installation recommended)
• Corrosion resistant - powder coated steel coils to help slow rusting process over spring life
• 1-year warranty - springs are warranted for 1 year from purchase date

 

How to make Torsion Spring as per your enquiries?Pls provide me main specification as follows•Wire diameter •Material•Body length•Maximum outside diameter, minimum inside diameter•Number of coils Or detailed drawing or real samples is very usefulFAQ:Q: Are you a manufacturer ? Do you Accept OEM?
A: Yes, as a professional manufacturer, we have been in spring field for over 11 years and we accept OEM! Just give us your design, we will make samples for you soon
Q: Can you do design for me?
A: Yes. We have a professional team having rich experience in spring design and manufacturing.Just tell us your door dimension(door width&height, door weight and lifting systerm), we can custom designed spring size and spring weight
Q:What is your strengths?
A: Competitive price High quality Good communication with customers Best after-sales serviceQ:What is your packing?
A: a, Standard packing,PE bags, plywood cases, wooden carton, pallet. b, Based on your requirements
Q: How long is your delivery time?
A: Within 3-5 days after order confirmed. 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 negotiableQ: 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
Q: What is your warranty?
A: One year after sale service.