Is OEM/ODM available for your company?

Yes, OEM and ODM are available. We have R&D capabilities and can develop new molds.

What materials does your factory use?

We usually use Steel-Q235 and Zinc Alloy 4-4(NO.5) sourced from major factories in Hangzhou.

What is the lead time for samples and bulk orders?

Samples can ship in 1-2 days, while bulk orders take 40-45 days.

Durable Self-Closing Gate Spring for Outdoor Applications and Safety

Name: Durable Self-Closing Gate Spring for Outdoor Applications and Safety
Brand: Hangzhou Jiansen Hardware Co., Ltd.
SKU: 2239372565

Zhejiang, ChinaHangzhou Jiansen Hardware Co., Ltd.

US$3.36

100-999 Sets

US$2.69

1,000+ Sets

Sample price:US$10.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

1 Years

Warranty

1 Years

Model NO.

JL250316

Type

Spring

Finish

Powder Coating

Material

Iron

Available

Vinyl Gate, Fences, and Outdoor Doors

Color

Black, Accept Customization

Feature

Easily Assembled, Sustainable, Eco Friendly

Terms of Payment

T/T

OEM

Transport Package

Poly Bage+Carton

Specification

spring 14.5''

Trademark

Jiansen

Origin

Zhejiang

HS Code

830210000

Production Capacity

5000 Sets/ Month

Key features

Durable High-Strength Material: Made of high-quality steel with excellent elasticity and fatigue resistance for long service life.

Automatic Self-Closing Function: Quickly resets after opening to automatically close doors without manual operation.

Shock Absorption Design: Provides buffer effect to reduce noise and protect door body and frame from impact.

Easy Installation: Comes with complete accessories including screws and pins for convenient fixing.

Wide Compatibility: Suitable for wooden, vinyl, aluminum, and metal doors as well as fences.

Customizable Color: Available in black with options for custom color customization.

Complete Package: Includes 1 spring, 1 adjusting pin, 2 locating pins, and 4 screws.

Eco-Friendly & Sustainable: Designed with sustainable features and durable materials to reduce replacement costs.

Company profile

Exhibition ExperiencePatents AwardedOverseas WarehouseStandardized quality control

Hangzhou Jiansen Hardware Co., Ltd.

Zhejiang, 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 Port; Ningbo PortAverage Response Time: ≤2.41h

AI-Powered supplier vetting

SummaryThe supplier is a combined company with a broad hardware, metal structure, door and window, mold, mechanical component, plastic product, and furniture scope. It reports extensive customization, ODM and OEM capabilities, recent new-product development, and a substantial equipment base covering laser cutting, CNC bending, polishing, pipe cutting, punching, grinding, turning, hydraulic processing, and packaging. ISO9001:2015 and RoHS are reported, alongside documented service, corrective-action, and complaint-handling procedures. Inventory and overseas warehouse services are available, with stated lead times within 15 working days in both peak and off-season periods. However, there is no valid manufacturing contract with related subcontractors, no approved supplier list, no overseas showroom, no SDK, and no Fortune 500 customer collaboration. Financial information is insufficient for a reliable credibility assessment.

Supplier typeThe supplier is identified as a combined company and reports a broad business scope covering hardware products, metal structures, doors and windows, molds, mechanical components, plastics, furniture, and import/export activities. This indicates a diversified manufacturing and trading structure rather than a narrowly specialized supplier.

CertificationsThe supplier reports an ISO9001:2015 management-system certificate and RoHS product compliance certification. These explicitly support quality-management and product-compliance capabilities, although no other certifications are provided.

After-Sales capabilityThe supplier has written procedures and records for service assessment, corrective and preventive actions, and customer complaint handling. It also provides in-stock capability, overseas warehouse services, and stated lead times within 15 working days in both peak and off-season, but lacks an overseas showroom and has no valid manufacturing contract with related subcontractors.

R&D capabilityThe supplier reports new products during the past year, provides ODM services, and offers customization from samples, designs, and full or minor specifications. However, it explicitly has no available SDK, so the evidence supports product-development capability but not software-development integration.

Production capacityThe equipment list includes laser cutting, CNC bending and turning, automatic polishing, pipe cutting, punching, grinding, hydraulic processing, assembly, sealing, and manual and automatic packaging. Inventory capability, 15 qualified service suppliers, and lead times within 15 working days are also reported, while the absence of a valid manufacturing contract with related subcontractors is a documented limitation.

Customization capabilityBoth the R&D and design-capability records explicitly list customization from samples, customization from designs, full customization, minor customization, and flexible customization. The supplier also reports ODM service availability, providing direct evidence of broad customization support.