Is the hinge suitable for outdoor use?

Yes, it passed a 72H-168H salt spray test, making it suitable for humid environments like kitchens and bathrooms.

What is the maximum weight capacity of the hinge?

The hinge supports weights ranging from 40kg to 120kg depending on the specific model.

Do you offer OEM and ODM services?

Yes, we offer both OEM and ODM services with customization from samples or designs.

3D 3-Way Wood Door Concealed Hidden Invisible Hinges 180 Degree

Name: 3D 3-Way Wood Door Concealed Hidden Invisible Hinges 180 Degree
Brand: TOPUNION HARDWARE AND PLASTIC CO., LIMITED
SKU: 2203239585

Guangdong, ChinaTOPUNION HARDWARE AND PLASTIC CO., LIMITED

US$7.00-13.60

50 Pieces

Sample price:US$6.07/piece.Request sample

Product profile

Customization

Available

After-sales Service

3 Years

Warranty

3 Years

Model NO.

IH120

Type

Vertical Adjustment Range 3/16"

Finish

Refer to Requirement

Material

Stainless Steel

Lead Time

45-60 Days

Logo

Laser on Lever Post

Min Thickness

35mm,40mm,45mm

Screws

Stainless Steel 304

Feature

Adjustable

Application

Hotel, Covernment , Apartment Building etc.

Max Weight

40kg,60kg,80kg,100kg,120kg

Suitable for

Wooden,Steel,Profile,Folding Door etc.

Color

Black,Sliver,Golden, Antique Brass, etc.

Size-Zinc Alloy

246X34X28mm

Siza-Stainless Steel

160×30×34mm

Corrosion Test

72h - 168h Salt Spray Test Passed

Transport Package

Plastic Bag+ Inner Box+ Carton

Specification

Refer to Requirement

Trademark

OEM

Origin

China

HS Code

8302410000

Production Capacity

50, 000 PCS/Month

Key features

Complete Invisibility: Hinge is entirely hidden from view for a clean, seamless, and minimalist appearance.

3D Micro-Adjustment: Allows precise adjustments in depth, height, and lateral directions for perfect alignment.

Soft-Close Function: Integrated damping system ensures quiet, gentle closing and prevents slamming.

High Corrosion Resistance: Passed 72H-168H Salt Spray Test, ideal for humid environments like kitchens and bathrooms.

Robust Construction: Made from high-grade stainless steel or cold-rolled steel with durable finishes.

Wide Application: Suitable for wooden, steel, profile, and folding doors in hotels, apartments, and furniture.

Easy Installation: Designed for standard 35mm cup hole installation, saving time and labor costs.

Customization Options: Offers full, minor, and flexible customization from samples or designs.

Company profile

High Repeat Buyers ChoiceExhibition ExperienceStandardized quality controlManagement Certification

TOPUNION HARDWARE AND PLASTIC CO., LIMITED

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 4 Years CertifiedNearest Port: Shenzhen Port, Guangzhou PortAverage Response Time: ≤8.88h

AI-Powered supplier vetting

SummaryTopunion Hardware & Plastic Co., Limited is identified as a professional architectural hardware manufacturer established in 2002, with stated manufacturing, R&D, sales, and customer-service capabilities. Evidence supports broad customization, 3D software design, OEM/ODM, and multiple machining and testing facilities. The supplier reports quality assurance, documented corrective-action and complaint-handling procedures, and ISO9001:2015 certification. Production information includes specified outputs for several hardware products and peak-season fulfillment within 15 workdays. Export sales represent 71%–90% of total sales, with four years of export experience. Financial records are referenced for 2021–2023, but no substantive financial results are provided. Innovation capability is mixed: R&D and design services are documented, while SDK availability is explicitly absent. No factory environmental impact assessment report is available, although this does not directly determine the requested fields.

Supplier typeThe supplier is explicitly described as a professional technical supplier and professional architectural hardware manufacturer. Its stated scope covers hardware development, manufacturing, wholesale, security equipment, plastic products, and related import/export activities, indicating a manufacturing-oriented supplier with product-development capability.

CertificationsThe company states that its products are designed and manufactured according to ANSI or EN/DIN standards, and it holds an ISO9001:2015 certificate. These are explicit indications of standards alignment and quality-management certification.

After-Sales capabilityThe supplier reports clear procedures and followed records for corrective and preventive actions and customer-complaint handling. Its company description also lists customer service as part of its operating capabilities, providing direct evidence of an organized after-sales process.

R&D capabilityThe supplier reports R&D capability, 3D software design services, hardware product development, OEM/ODM, and extensive customization. However, SDK availability is explicitly marked as unavailable, so the evidence supports product and design innovation but not SDK-based development.

Production capacityProduction capability is supported by stated machining, stamping, cutting, drilling, welding, milling, CNC, packing, riveting, and testing facilities, along with specified outputs for sliding-door rollers, lever handles, and pull handles. The supplier also reports peak-season order fulfillment within 15 workdays, indicating documented manufacturing capacity and delivery capability.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also states that customized logos and packaging, OEM, and ODM are available, demonstrating broad product and branding customization support.

Product Q&A

Q:What is the warranty period for this hinge?

We provide a 3-year warranty for all mechanical defects.

Q:What materials are used to make this hinge?

The hinge is constructed from high-grade stainless steel or zinc alloy.

Q:Can the hinge be customized in color and design?

Yes, we offer full customization, minor customization, and flexible options from samples or designs. Colors include Silver, Black, Golden, and Antique Brass.

Q:What is the minimum order quantity?

The minimum order quantity is 100 pieces.

Q:How long does it take to produce an order?

The production lead time is 45 days, or 45-60 days depending on the season.