High Cycle Garage Door Torsion Spring

Name: High Cycle Garage Door Torsion Spring
Brand: Hangzhou Kuntai Hardware Co., Ltd.
SKU: 2333071645

Zhejiang, ChinaHangzhou Kuntai Hardware Co., Ltd.

US$1.00-50.00

300 Sets

Sample price:US$50.00/set.Request sample

Product profile

Customization

Available

Function

Drive

Material

Iron

Model NO.

KT-SP-001

Usage

Industrial, Motorcycle

Load Type

Torsion

Production Process

Cold Roll

Shape

Cylinder

Transport Package

Wooden Box

Specification

1-3/4-6inch

Trademark

KUNTAI

Origin

China/Vietnam

Key features

Oil Tempered High Carbon Steel: Wound from premium high-carbon spring wire and oil-tempered for stable load retention throughout the service life.

Supplied Wound and Coned: Each spring is delivered with matched winding cones and set screws already fitted, so installers mount directly without on-site coning.

Left- and Right-Hand Wound as Matched Pairs: Every set is wound to the correct hand and packed as a pair, keeping the door level and the cable drum balanced under load.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceSelf-brandedPatents Awarded

Hangzhou Kuntai Hardware Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 4 years CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤8.29h

AI-Powered supplier vetting

SummaryThe supplier sells bearings, building metal fittings, hardware, doors and windows, and special steel materials. It reports broad customization and R&D capabilities, including new products in the past year and ODM services. Production is supported by punching, injection molding, hydraulic riveting, and bearing assembly equipment, with peak-season lead times of one month and off-season lead times within 15 workdays. Quality assurance and ISO9001:2015 certification are reported. However, the supplier has no valid manufacturing-capacity contract with affiliated subcontractors, lacks overseas warehouses, branches, agents, and showrooms, and has weaknesses in documented supplier assessment, corrective-action, complaint, fire-drill, and environmental-management records. No evidence of major-brand OEM customers or customer cases is provided.

CertificationsThe supplier reports holding an ISO9001:2015 certificate, providing explicit evidence of a quality-management certification. However, it reports no factory environmental impact assessment and no regular fire drills during the past year, so certification evidence is limited to quality management.

R&D capabilityThe supplier reports new products during the past year, ODM services, and multiple levels of customization. It does not provide an available SDK and does not serve well-known brands through OEM, but those points do not negate the stated product-development and ODM capabilities.

Production capacityProduction-related equipment includes punching, injection molding, hydraulic riveting, and bearing assembly machines. The supplier reports in-stock capacity, peak-season lead time of one month, off-season lead time within 15 workdays, and uniformly followed finished-product inspection instructions. A limitation is the absence of a valid manufacturing-capacity contract with affiliated subcontractors.

Customization capabilityThe supplier explicitly offers customization from samples, designs, minor customization, full customization, and flexible customization. These capabilities are reported consistently across the R&D and design-service information, indicating broad customization coverage.