What materials are used for the springs?

Springs are made from premium high-carbon spring steel with excellent fatigue resistance.

What finishes are available for corrosion resistance?

Oiled, powder coated, galvanized, and electrophoretic finishes are available.

Heavy-Duty Commercial Door Torsion Spring for Optimal Performance

Name: Heavy-Duty Commercial Door Torsion Spring for Optimal Performance
Brand: Hefei Wang Qin Spring Co., Ltd.
SKU: 2305450015

Anhui, ChinaHefei Wang Qin Spring Co., Ltd.

US$1.20-1.50

5,000 kg

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Sincere to The Letter of The Perfect Service, 100%

Warranty

1 Year

Model NO.

QYS12019

Type

Door Spring

Material

Metal

Wire Diamater

2.5-12mm

Length

Customizable

Cycles

10000-30000

Transport Package

Standard Packing, Plywood Box

Specification

1 3/4" 2" 2 5/8" 3 3/4" 5 1/4" 6"

Trademark

Origin

Hefei Anhui China

HS Code

7320909000

Production Capacity

5000pairs/Week

Key features

Premium Material Construction: Crafted from high-carbon spring steel with professional quenching and tempering for superior durability.

Long Cycle Life Options: Available in 10,000, 20,000, or 30,000 cycle ratings to meet diverse application needs.

Full Customization Capability: Wire diameter, length, inner diameter, and wind direction can be fully customized.

Anti-Rust Protection: Features full anti-rust coating and multiple finish options including oiled, powder coated, and galvanized.

Precision Manufacturing: Made via CNC precision coiling ensuring uniform coils and balanced torsion force.

Safety Certified Quality: Each product passes strict load safety tests to prevent sudden breakage risks.

ISO Certified Standards: Manufactured under ISO certified quality control systems for reliability.

Comprehensive Warranty: Includes a 1-year warranty covering mechanical defects and performance issues.

Company profile

Patents AwardedFast DeliveryQuality AssuranceR&D Capabilities

Hefei Wang Qin Spring Co., Ltd.

Anhui, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 11 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤1.48h

AI-Powered supplier vetting

SummaryHefei Wang Qin Spring Co., Ltd. is a China-based manufacturer/factory in Anhui specializing in automatic door balance system and garage door springs. It reports ISO 9001 certification, nine production lines, in-stock capability, and lead times within 15 working days in both peak and off-seasons. The supplier offers broad customization, ODM, and OEM services for popular brands, but reports no new products in the past year and has fewer than five R&D engineers. Service processes exist for corrective actions and complaints, but written records and formal assessment procedures are absent. It has no overseas warehouse, showroom, agent, branch, or stated overseas-service countries, and lacks a valid manufacturing-capacity contract with related subcontractors. Financial evidence is insufficient for a credibility assessment, while customer-case evidence is limited to OEM service for popular brands and participation in R+T Asia.

Supplier typeThe supplier is identified as a manufacturer/factory and other business entity, organized as a limited company in China, with an operating location and factory address in Anhui. This directly supports classification as a manufacturing supplier.

CertificationsThe supplier reports holding ISO 9001 certification. This is explicit evidence of a certified quality management system, although no certificate scope, issuing body, or validity details are provided.

Production capacityThe supplier describes professional production and testing equipment, strict quality control, nine production lines, inventory capability, and lead times within 15 working days in both seasons. Nevertheless, it reports no valid manufacturing-capacity contract with related subcontractors, so the overall production assessment is positive but not without a documented control gap.

Customization capabilityThe supplier explicitly offers full customization, design-based customization, sample-based customization, minor customization, flexible customization, ODM services, and OEM services for popular brands. These offerings directly support strong customization capability.