Good Quality Oil Tempered Torsion /Extension Spring

Name: Good Quality Oil Tempered Torsion /Extension Spring
Brand: Hefei Wang Qin Spring Co., Ltd.
SKU: 925357515

Anhui, ChinaHefei Wang Qin Spring Co., Ltd.

US$0.90-1.60

500 kg

Sample price:US$1.50/kg.Request sample

Product profile

Customization

Available

Type

Door Spring

Material

High Carbon Steel

Wire Diameter

2.0mm-12.0mm

Direction

Left Hand & Right Hand

Length

as Your Require

Surface Treatment

Zinc&Black Coated

Function

Drive, Restoration, Measurement

Usage

Industrial, Auto, Furniture, Home Appliance, Garag

Load Type

Torsion

Production Process

Cold Roll

Shape

Coil

Transport Package

Standard Packaging, Pallet, Wooden Box Pallet

Specification

as Your Require

Trademark

Origin

Hefei Anhui China

HS Code

7320909000

Production Capacity

5000pairs/Week

Key features

Oil Tempered Construction: Black coated, oil tempered wire provides a clean, durable finish for smoother operation.

High Cycle Durability: Minimum 10,000 cycles with +/- 7.5lbs tolerance of target door weight.

Customizable Dimensions: Wire diameter 2.0mm-12.0mm, length as required, and custom shapes available.

Diverse Surface Options: White zinc plating, nickel plating, chrome, powder coating, or oil paint.

Aluminum Cones Included: Both winding and stationary cones installed with steel coils for strength.

Wide Material Selection: Available in 72B, 82B, 60Si2MnA, and 65Mn high carbon steel.

ISO9001 Certified: Manufactured under strict ISO9001 quality management standards.

Flexible MOQ Policy: Accepts small trial orders to welcome new customers.

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: ≤1.68h

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? Do you Accept OEM?

Yes, as a professional manufacturer, we have been in spring field for over 14years and we accept OEM! Just give us your design, we will make samples for you soon.

Q:How long is your delivery time?

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

Q:What payment method do you accept?

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

Q:What is your sea shiping port?

SHANGHAI port usually; any problems contact us ASAP.

Q:What is your warranty?

One year after sale service.