What is the minimum order quantity?

MOQ is negotiable and any small trial order is welcome to verify quality first.

What is the lead time for this garage door torsion spring?

Samples take 5 to 7 days and bulk orders take 15 to 30 days depending on quantity and specification.

How is this garage door torsion spring packed and tested?

It is packed in polybag, paper carton and a seaworthy wooden case after 100 percent pre-shipment load and cycle testing.

Heavy Duty Garage Door Spring Set for Sectional Doors ISO9001 Certified

Name: Heavy Duty Garage Door Spring Set for Sectional Doors ISO9001 Certified
Brand: Jinan Chenji International Trade Co., Ltd.
SKU: 2190966342

Shandong, ChinaJinan Chenji International Trade Co., Ltd.

US$9.90

20-99 Sets

US$7.90

100-299 Sets

US$6.90

300+ Sets

Sample price:US$58.00/piece.Request sample

Product profile

Customization

Available

Function

Buffer, Drive

Material

Steel

Model NO.

CS-SP-156

Usage

Auto, Home Appliance

Load Type

Torsion

Production Process

Cold Roll

Shape

Coil

Spring Material

Spring Steel (High-Carbon Steel)

Structure

0.218-0.500 Inch Wire Torsion Coil

Package

Polybag-Paper Carton-Wooden Case

Custom HS Code

73202010

Wire Diameter

0.218-0.500 in

MOQ

Any Small Trial Order Is Welcome

End Type

Coned Ends

Application 1

Residential Garage Door

Application 2

Double Car Sectional Door

OEM Service

Available

Factory Since

2014

Production Equipment

35 Sets of Spring Manufacturing Equipment

Transport Package

100X100X100cm Wooden Case, 1100kg, Seaworthy

Specification

standard

Trademark

chenji

Origin

China

HS Code

7320209000

Production Capacity

49000PC/Week

Key features

ISO 9001 certified heavy duty spring set manufacturer since 2014 with 35 sets of production equipment

heavy duty spring set built for Residential Garage Door and Double Car Sectional Door duty

0.218-0.500 in wire diameter option available on CHENJI-GAR-36

100% pre-shipment inspection with load and cycle testing on every CHENJI-GAR-36 production lot

Oil tempered finish corrosion protection for heavy duty spring set

OEM and ODM private-label manufacturing for CHENJI-GAR-36 with custom branded packaging

35 sets of production equipment producing heavy duty spring set to ISO 9001 standards

Small trial order welcome with free sample for heavy duty spring set

Company profile

Years of Export ExperienceImporters and Exporters

Jinan Chenji International Trade Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2014-09-17Nearest Port: QingdaoAverage Response Time: ≤1.84hTerms of Payment: T/T, PayPal, Western UnionInternational Commercial Terms(Incoterms): FOB, CFR, CIF

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier offering 3D software design, SDK support, ODM, OEM, and multiple customization options. It reports brewing-equipment production of 1,000 sets annually, exports to a broad range of regions, and generally states lead times of within 15 working days off-season and one month during peak season, although another slice reports within 15 working days during peak season. CE certification and regular fire drills are documented. After-sales services include installation, debugging, maintenance, repair, and training. Financial records are indicated for 2021–2023, but no financial performance values are provided. Innovation evidence is weak because no new products were launched in the past year, and quality-control test equipment is reported as zero. The supplier states OEM service for popular brands, but no specific customer names or case details are provided.

Supplier typeThe supplier is explicitly identified as a professional technical supplier and provides 3D software design services. This supports classification as a technical and design-capable supplier rather than only a standard product manufacturer.

CertificationsThe supplier reports sustainable-development and product certification capability through CE certification. This is explicit certification evidence, although no additional certification types are listed.

After-Sales capabilityThe supplier has documented procedures and records for handling customer complaints and service corrective/preventive actions. It offers installation, debugging, maintenance, repair, and training, with service coverage determined by customer demand; however, it has no overseas warehouses, showrooms, agents, or branches.

Production capacityThe supplier reports annual brewing-equipment production of 1,000 sets, exports to numerous global regions, and an off-season lead time within 15 working days. It also reports one month for peak-season fulfillment in one slice, while another states within 15 working days during peak season, so peak-season capacity information is inconsistent.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. This is direct evidence of broad customization capability.