China Wholesale Black Oil Tempered Torsion Spring Overhead Sectional Garage Door Tension Spring

We are professional manufacturer of Garage door spring and Industiral door hardwares,including springs,spring cones,cable drum,hinges,brackets,industrial bearing,tracks etc.
Our mission is to provide the highest quality garage door spring ,outstanding customer service ,and competitive prices.
These high quality Garage Door Torsion Springs include cones installed on the springs and are sleek, oil tempered and coated black for a strong smoother operation. These sturdy garage door torsion springs are made of steel coils with aluminum cones and can withstand any weather making them the best buy for your garage door. Engineered For Maximum Application Range.Minimum 10,000 Cycles, At +/- 7.5lbs Of Target Door Weight.Springs Are Made Of Steel Coils With Aluminum Cones.Both Winding And Stationary Cones Are Installed.Black Coated, Oil Tempered,Galvanized Wire Provides A Clean Durable Finish.Clear, Easy To Read Spring Markings For Easy Identification.
NameWholesale Cheap Black Oil Tempered Torsion Spring Overhead Sectional Garage Door Tension SpringDiameter1 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



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.
Q: What is your warranty?
A: One year after sale service.