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Best Price Extension Spring for Garage Door and Sectional Opening System
US$1.20-2.50
500 kg
Sample price:US$2.50/kg.Request sample
Product profile
Customization
AvailableFunction
PressedMaterial
SteelModel NO.
Tension SpringUsage
Industrial, Auto, Motorcycle, Home Appliance, Garage DoorLoad Type
TorsionProduction Process
Hot RollShape
CoilPackaging Details
Cartons and PalletsDelivery Time
According to Order QuantityApplication
Garage Door, Industrial DoorLead Time
6-10daysTransport Package
PalletSpecification
1-3/4" ~6"Trademark
NHentranceOrigin
Jiangsu, ChinaHS Code
7320209000Key features
Premium Steel Material: Manufactured from high-grade, corrosion-resistant steel for long-lasting durability.
Certified Quality: Adheres to EU CE, SGS, and ISO9001 standards for global market compliance.
Wide Size Range: Available in multiple inner diameters from 44.45mm to 152.4mm for various doors.
Global Export Experience: Exported to over 30 countries including US, EU, Canada, and Australia.
Professional Manufacturing: Advanced production facilities in Wuxi and Dongtai with over 20 years expertise.
Optimal Tension Control: Precision-engineered system reduces wear on door components and enhances safety.
Flexible Payment Terms: Accepts T/T and L/C with options for discussion on other terms.
Fast Lead Time: Standard lead time of 6-10 days according to order quantity.
Company profile
Business Type: Manufacturer/Factory, Trading CompanyAverage Response Time: ≤2.37h
AI-Powered supplier vetting
SummaryThe supplier is identified as a professional technical supplier with R&D capability, 3D software design services, and broad customization options. It operates two production lines, reports output for high-speed PVC doors, high-speed spiral doors, and dock levelers, and has 11–20 quality-control staff, including 13 inspectors in one record. Quality inspection instructions are reportedly standardized. The supplier has in-stock capability and defined service quotation and payment terms, but lacks overseas agents or branches, overseas warehouses, overseas showrooms, and offline trade-show participation. No valid manufacturing-capacity contract with related subcontractors is reported. Financial records are referenced for 2022–2024, but no financial figures or performance details are provided. No SDK is available, and no customer cases are identified.
Supplier typeThe supplier is explicitly described as a professional technical supplier. Its stated scope includes communication equipment, smart-home devices, molds, office supplies, metal products, and bearings, while its facilities and industry experience cover entrance-related products.
R&D capabilityThe supplier reports professional technical R&D capability, 3D software design services, and over 20 years of industry expertise with a dedicated R&D team. Conversely, no SDK is available, so the evidence supports general product-development capability but not SDK-based integration capability.
Production capacityThe supplier operates two production lines and reports annual output of 10,000 high-speed PVC doors, 12,000 high-speed spiral doors, and 10,800 dock levelers. It has production facilities in Wuxi, Dongtai, and Thailand, but no valid manufacturing-capacity contract with related subcontractors is reported.
Customization capabilityBoth R&D and design-service records explicitly list customization from samples, customization from designs, full customization, minor customization, and flexible customization. This directly supports broad customization capability.
Product Q&A
Q:How do I know if my door spring needs replacement?
A:
Signs include difficulty opening or closing the door, visible wear and tear, or loud noise when operating.
Q:Can I replace a door spring myself?
A:
It is dangerous and requires specialized tools; hiring a professional is recommended.
Q:How long do door springs typically last?
A:
On average, a torsion spring lasts about 7-9 years or approximately 10,000 cycles.
Q:What payment terms do you accept?
A:
We usually accept T/T and L/C, but other terms can be discussed.
Q:What certifications do your products have?
A:
Products adhere to EU CE mark, international SGS, and ISO9001 Quality Management System.
Send Inquiry
*To:
NHentrance Co., Ltd.
NHentrance Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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