What payment method do you accept?

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

What is your terms of payment?

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

What is your sea shiping port?

SHANGHAI port usually; any problems contact us ASAP.

Premium Carbon Steel Long Extension Spring for Industrial Doors

Name: Premium Carbon Steel Long Extension Spring for Industrial Doors
Brand: Hefei Wang Qin Spring Co., Ltd.
SKU: 924581825

Anhui, ChinaHefei Wang Qin Spring Co., Ltd.

US$0.40-1.80

500 kg

Sample price:US$1.50/kg.Request sample

Product profile

Customization

Available

Function

Drive, Restoration

Usage

Industrial, Furniture

Model NO.

QYS191

Load Type

Torsion

Production Process

Cold Roll

Shape

Coil

Wire Diameter

2.0mm-12.0mm

Direction

Left Hand & Right Hand

Transport Package

Standard Packaging, Pallet or Wooden Case

Specification

As your require

Trademark

Origin

Hefei Anhui China

HS Code

7320909000

Production Capacity

5000pairs/Week

Key features

Customizable Dimensions: Wire diameter 2.0mm-12.0mm, Left/Right hand, and custom drawings/samples accepted.

Durable Material: Carbon steel coils (72B, 82B, etc.) with aluminum cones, oil tempered and black coated.

High Cycle Life: Minimum 10,000 cycles at +/- 7.5lbs of target door weight for reliable performance.

Versatile Surface Treatment: Options include zinc plating, nickel/chrome plating, powder coating, oil, or paint.

Professional OEM Service: 14+ years experience, accepts OEM/ODM, full customization from designs and samples.

Fast Delivery: Delivery within 3-5 days after order confirmation, depending on actual quantity.

Low MOQ: Any small trial order is welcome, supporting flexible purchasing needs.

Quality Certified: Certified by SGS and ISO9001, ensuring high quality and competitive prices.

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: ≤0.94h

AI-Powered supplier vetting

SummaryHefei Wang Qin Spring Co., Ltd. is a manufacturer based in Anhui, China, specializing in the design and production of automatic door balance system springs. The company holds ISO 9001 certification and has a strong focus on quality control. However, it lacks written records for corrective and preventive actions and customer complaint handling procedures. The supplier is capable of providing OEM and ODM services but lacks recent innovation in R&D. It also has limited international service capabilities, with no overseas warehouses or agents. The company has a moderate production capacity and offers flexible customization options.

Supplier typeThe supplier is a combined manufacturer and factory based in China, operating as a limited company.

CertificationsThe supplier holds an ISO 9001 certification, indicating compliance with quality management standards.

R&D capabilityThe supplier offers customization but has not introduced new products in the past year, reflecting limited innovation.

Production capacityThe supplier operates 9 production lines and has a significant annual output of garage door springs, indicating strong production capability.

Customization capabilityThe supplier provides a range of customization services, including full and minor customization, indicating flexibility.

Client casesThe supplier provides OEM services for popular brands, demonstrating experience with significant clients.

Product Q&A

Q:How to make Torsion Spring as per your enquiries?

1, Pls provide main specification: Wire diameter, Material, Body length, Max/Min diameter, Number of coils. 2, Detailed drawing or real samples is very useful. 3, Door dimension (width, height, weight, lifting system) is also Ok, we can custom designed.

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:What is your strengths?

Competitive price, High quality, Good communication with customers, Best after-sales service.

Q:What is your packing?

Standard packing, PE bags, plywood cases, wooden carton, pallet. 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.