Premium Heavy-Duty 3 3/4" Galvanized Torsion Spring for Industrial Door Use

Name: Premium Heavy-Duty 3 3/4" Galvanized Torsion Spring for Industrial Door Use
Brand: Hefei Wang Qin Spring Co., Ltd.
SKU: 2312882875

Anhui, ChinaHefei Wang Qin Spring Co., Ltd.

US$1.20-1.50

5,000 Kg

Product profile

Customization

Available

After-sales Service

Sincere to The Letter of The Perfect Service, 100%

Warranty

1 Year

Model NO.

QY26751

Type

Door Spring

Material

High Carbon Steel

Size

Customizable

Key Features

Premium High-Tensile Steel Construction,

Core Functions & Benefits

Compatible with Most Standard Sectional Garage Doo

Common Applications

Residential Sectional Overhead Garage Doors

Transport Package

Standard Packing, Pallet

Specification

95mm/133mm/152mm

Trademark

Origin

Hefei Anhui China

HS Code

7320909000

Production Capacity

5000pairs/Week

Key features

Customizable Sizes: Full customization available per customer drawings or specific needs.

High-Tensile Steel: Constructed from premium high-carbon steel for superior durability.

1-Year Warranty: Comprehensive 1-year warranty coverage for mechanical defects.

OEM & ODM Support: Full OEM and ODM services including customization from designs and samples.

Fast Delivery: Typical lead time of 7-15 workdays based on order quantity.

Multi-Surface Treatment: Available in Galvanized, Oiled, Powder-Coated, or Electrophoretic finishes.

CNC Precision: High-precision manufacturing using CNC machining for accurate dimensions.

Sample Availability: Samples provided for testing and quality verification before bulk orders.

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: ≤1.16h

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.