What certifications do your products have?

Our products adhere to stringent European industry standards and have earned certifications including EU CE mark, international SGS, and ISO9001.

What are the available sizes for the torsion springs?

We offer sizes ranging from 1-3/4 inch to 6-inch, with inner diameters from 30mm to 152.4mm.

Heavy-Duty Spring for Industrial Sectional Doors with Superior Load Capacity Torsion Spring

Name: Heavy-Duty Spring for Industrial Sectional Doors with Superior Load Capacity Torsion Spring
Brand: NHentrance Co., Ltd.
SKU: 1988684451

Jiangsu, ChinaNHentrance Co., Ltd.

US$1.20-2.50

500 kg

Product specifications

Surface Treatment

Sample price:US$2.50/kg.Request sample

Product profile

Customization

Available

Function

Pressed

Material

Steel

Model NO.

Torsion Spring

Usage

Industrial, Auto, Motorcycle, Home Appliance, Garage Door

Load Type

Torsion

Production Process

Hot Roll

Shape

Coil

Packaging Details

Cartons and Pallets

Delivery Time

According to Order Quantity

Application

Garage Door, Industrial Door

Lead Time

6-10days

Transport Package

Pallet

Specification

1-3/4" ~6"

Trademark

NHentrance

Origin

Jiangsu, China

HS Code

7320209000

Key features

Premium Corrosion-Resistant Steel: Manufactured from high-grade steel ensuring long-lasting durability and consistent performance.

Precision-Engineered Torsion System: Maintains optimal tension to reduce wear on door components and enhance overall safety.

Multiple Size Options: Available in various inner diameters ranging from 30mm to 152.4mm to fit different doors.

EU CE and ISO9001 Certified: Adheres to stringent European industry standards with international SGS and ISO certifications.

Global Export Experience: Products exported to over 30 countries including the US, EU, Canada, and Australia.

Fast Lead Time: Standard delivery time is 6-10 days depending on order quantity.

Versatile Applications: Suitable for residential, commercial, industrial, and garage door systems.

Advanced Production Facilities: Operates advanced facilities in Wuxi and Dongtai for large-scale output and quality control.

Company profile

Raw-Materials TraceabilityR&D CapabilitiesIn-stock CapacityFast Delivery

NHentrance Co., Ltd.

Jiangsu, China

Business Type: Manufacturer/Factory, Trading CompanyAverage Response Time: ≤1.73h

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?

Signs that your door spring needs replacement include difficulty opening or closing the door, visible wear and tear, or a loud noise when operating the door.

Q:Can I replace a door spring myself?

Replacing a door spring can be dangerous and requires specialized tools and knowledge. It is recommended to hire a professional for this task.

Q:How long do door springs typically last?

The lifespan of a door spring depends on its usage and quality. On average, a torsion spring can last about 7-9 years or approximately 10,000 cycles.

Q:What kind of payment terms would you accept?

We usually accept T/T and L/C, etc. If you prefer another payment term, please discuss them with us.

Q:What is the lead time for orders?

The standard lead time is 6-10 days, though it may vary according to the order quantity.