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we accept T/T, western union or paypal before production. Other payments are negotiable

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Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment.

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SHANGHAI port usually; any problems contact us ASAP.

Design Oil Tempered Garage Door Extension Spring

Name: Design Oil Tempered Garage Door Extension Spring
Brand: Hefei Wang Qin Spring Co., Ltd.
SKU: 929810345

Anhui, ChinaHefei Wang Qin Spring Co., Ltd.

US$1.20-1.50

2,000 kg

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Type

Door Spring

Material

High Carbon Steel

Model NO.

QY5601

Function

Drive, Restoration, Measurement

Usage

Industrial, Auto, Furniture, Home Appliance,

Load Type

Extension

Wire Diameter

2.0-6.0mm

Transport Package

Standard Packaging, Pallet

Specification

72B

Trademark

Origin

Hefei Anhui China

HS Code

7320909000

Production Capacity

5000pairs/Week

Key features

Oil Tempered Material: Made of high carbon steel with oil tempered wire for durability.

Customizable Design: Available in custom sizes, dimensions, and surface treatments based on drawings or samples.

High Cycle Life: Engineered for a minimum of 10,000 cycles at +/- 7.5lbs of target door weight.

Safety Containment: Features a plug-end extension spring with a safety containment rod.

Strong Connection: Double-looped ends provide a stronger connection to lift cables.

Durable Finish: Black coated or various plating options like zinc, nickel, and chrome for a clean finish.

Easy Identification: Clear and easy-to-read spring markings for quick identification.

ISO9001 Certified: Manufactured under ISO9001 quality management standards.

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: ≤1.60h

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.

Product Q&A

Q:Are you a manufacturer and do you accept OEM?

Yes, as a professional manufacturer, we have been in the spring field for over 11 years and we accept OEM! Just give us your design, we will make samples for you soon.

Q:Can you do design for me?

Yes. We have a professional team having rich experience in spring design and manufacturing. Just tell us your door dimension (door width&height, door weight and lifting systerm), we can custom designed spring size and spring weight.

Q:What is your strengths?

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. b, Based on your requirements.

Q:How long is your delivery time?

Within 3-5 days after order confirmed. Of course, it depends on the actual quantity.