What payment methods do you accept?

We accept T/T, Western Union, or PayPal before production. Other payment methods are negotiable.

What are your terms of payment?

For payments under 1000 USD, 100% is required in advance. For payments of 1000 USD or more, 30% T/T is required in advance, with the balance due before shipment.

What is your sea shipping port?

We usually ship from SHANGHAI port. Please contact us ASAP if you have any problems.

What is your warranty?

We provide one year of after-sales service.

Premium Torsion and Extension Coil Springs for Doors

Name: Premium Torsion and Extension Coil Springs for Doors
Brand: Hefei Wang Qin Spring Co., Ltd.
SKU: 923020325

Anhui, ChinaHefei Wang Qin Spring Co., Ltd.

US$1.20-1.50

5,000 kg

Sample price:US$1.30/kg.Request sample

Product profile

Customization

Available

Function

Drive, Restoration, Drive

Material

High Carbon Steel, Steel

Usage

Industrial, Furniture, Home Appliance, Garage Door/Industrial Door/Roller Shutter Door

Load Type

Torsion

Production Process

Cold Roll

Shape

Coil

Usage

Industrial, Home Appliance, Door

Load Type

Torsion

Production Process

Hot Roll

Shape

Coil

Transport Package

Standard Packing, Pallet

Specification

72B, 82B, 60Si2MnA

Trademark

Origin

Hefei Anhui China

HS Code

7320909000

Production Capacity

5000pairs/Week

Key features

High-Quality Material: Made of 72B, 82B, or 60Si2MnA high carbon steel coils with aluminum cones.

Durable Surface Treatment: Oil tempered, black coated, or customizable with zinc, nickel, chrome plating, and powder coating.

Long Cycle Life: Minimum 10,000 cycles with accuracy of +/- 7.5lbs of target door weight.

Customizable Dimensions: Available in various diameters including 1 3/4", 2", 2 5/8", 3 3/4", 5 1/4", and 6".

Professional OEM Service: Accepts OEM with custom designs, samples, and dimensions based on customer drawings.

Versatile Application: Suitable for luxury garage doors, factory lift doors, industrial doors, and roller shutters.

ISO9001 Certified: Manufactured under strict ISO9001 quality management standards.

Flexible MOQ: Accepts small trial orders to meet diverse customer needs.

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: ≤1.34h

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 with over 11 years of experience in the spring field, we accept OEM. Just give us your design, and we will make samples for you soon.

Q:Can you do design for me?

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

Q:What are your strengths?

Our strengths include competitive pricing, high quality, good communication with customers, and the best after-sales service.

Q:What is your packing?

We offer standard packing including PE bags, plywood cases, wooden cartons, and pallets. We also provide packing based on your specific requirements.

Q:How long is your delivery time?

Delivery time is within 3-5 days after order confirmation, though it depends on the actual quantity.