What is your after-sales service policy?

For defective products, send pictures for verification. If the issue is ours, we will send a replacement without extra fees.

Can I get a free sample before ordering?

Yes, free samples are available for checking, but you need to pay the express shipping cost. Delivery takes about 2-4 days.

What is your delivery time?

Our delivery time is usually 20-30 days after receiving the deposit.

How can I trust you for the first cooperation?

You can check our quality via samples, visit us face-to-face, or start orders through Alibaba Trade Assurance.

High Quality Strong 14.5mm Core Heavy Duty Stainless Steel Door Hinge

Name: High Quality Strong 14.5mm Core Heavy Duty Stainless Steel Door Hinge
Brand: Guangzhou Longterm Technology Co.,Ltd.
SKU: 711774535

Guangdong, ChinaGuangzhou Longterm Technology Co.,Ltd.

US$1.95

300-999 Pairs

US$1.90

1,000+ Pairs

Product profile

Customization

Available

Type

180°Hinge

Finish

Nickel Plated

Model NO.

LC-AS4330

Material

Stainless Steel

Size

4"X3"X3.0mm

Core Diameter

14.5mm

Accessories

M5X30 Stainless Steel Screws

Feature

Anti-Rust, Strong

MOQ

300 Pairs

Delivery Days

15-20days

Transport Package

Inner Box+Master Carton

Specification

SGS, ISO9001

Trademark

LONGTERM

Origin

Foshan, Guangdong

HS Code

8302100000

Production Capacity

500000sets One Month

Key features

Durable Stainless Steel Material: Constructed from 201SS or 304SS for superior strength and anti-rust performance.

180 Degree Rotation: Features a 180-degree hinge design for versatile door opening angles.

Multiple Size Options: Available in various sizes including 3x3, 4x3, 5x3, and 6x3.5 inches.

OEM and ODM Services: Customization available from samples or designs since 2007 with R&D support.

Strict Quality Control: 100% inspection for visual and function checks before packing.

Secure Packaging: Multi-layer protection with EPE bags, poly bags, and 5-layer master cartons.

Free Sample Availability: Free samples provided for quality check, buyer pays express shipping cost.

Fast Delivery Time: Standard delivery within 20-30 days after deposit confirmation.

Company profile

High Repeat Buyers ChoiceYears of Export ExperienceQuality AssuranceR&D Capabilities

Guangzhou Longterm Technology Co.,Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs CertifiedExport Year: 13 years CertifiedNearest Port: Guangzhou PortAverage Response Time: ≤8.10h

AI-Powered supplier vetting

SummaryThe supplier is a Foshan-based hardware manufacturer with a production base exceeding 20,000 square meters, nine stated workshops, four production lines, and listed output across hinges, handles, locks, and smart locks. It supports customization from samples and designs and reports established export activity, with 71%–90% of sales from exports and 13 years of exporting. However, it reports no private-mold R&D, no 3D software design service, no SDK availability, and only one year of total R&D engineer experience. Certification management is weak because supplier-management-system certification is listed as NIL. Service controls are mixed: written procedures and records exist for service assessment, but there is no approved-supplier list and no written corrective-action or complaint-handling procedures. Financial evidence is limited to year labels without performance metrics. Customer cases are not provided.

Supplier typeThe supplier identifies itself as GUANGDONG HYH HARDWARE INDUSTRIAL Co., Ltd., operates from Foshan, China, and describes a factory with more than 20,000 square meters, nine workshops, and hardware manufacturing equipment. Its listed products and facilities support classification as a hardware manufacturer rather than a purely trading or service company.

CertificationsThe supplier-management-system certification field is explicitly listed as “NIL.” No other certification evidence is provided in the supplied slices, so the available evidence indicates a certification shortfall for this field.

After-Sales capabilityThe supplier has written procedures and followed records for assessing service capability, and it offers defined quotation and payment terms with a stated one-month lead time in both peak and off-season periods. However, it has no written corrective/preventive-action procedures or records and no written customer-complaint-handling procedures, which directly weakens after-sales governance.

R&D capabilityThe company description states that it has an R&D department for novel and popular designs, but the detailed capability data reports no private-mold R&D, no professional-technical-supplier capability, no 3D software design service, no SDK availability, and only one year of total R&D engineer experience. These explicit limitations outweigh the general statement about having an R&D department.

Production capacityThe supplier reports four production lines, nine workshops, integrated manufacturing equipment, and output covering multiple hardware categories, including 6,000,000 door hinges, 2,000,000 cabinet handles and knobs, 600,000 door-lock sets, 120,000 smart locks, and 6,000,000 cabinet hinges. Finished-product inspection instructions are uniformly followed, but the factory does not continuously reconcile quantities for each batch or production lot.

Customization capabilityThe supplier explicitly offers customization from samples and customization from designs. This directly supports product customization, although the supplier separately states that it does not provide 3D software design services and has no private molds.