Is the hinge made of zinc alloy?

Yes, the main body is made of zinc alloy with stainless steel #304 screws.

What is the minimum door thickness required?

The minimum door thickness supported is 40mm.

Zinc Alloy Flush Doors 3D Adjustable Concealed Hinge 60kg

Name: Zinc Alloy Flush Doors 3D Adjustable Concealed Hinge 60kg
Brand: Dongguan Shengang Precision Metal & Electronic Co., Ltd.
SKU: 874461655

Guangdong, ChinaDongguan Shengang Precision Metal & Electronic Co., Ltd.

US$1.00-25.00

1 Piece

Sample price:US$50.00/piece.Request sample

Product profile

Customization

Available

Type

180°Hinge

Finish

Powder Coating

Model NO.

SG-HC30140

Material

Zinc Alloy

Name

Zinc Alloy Flush Doors 3D Adjustable Concealed Hin

Size

140*29.50mm

Door Weight

2PCS for 60kg

Door Thickness

40, 45, 50mm

Open

180 Degree

Finishing

Plating/Baking

Fireproofing

Transport Package

White Inner Boxes, Yellow-Brown Outside

Specification

140*29.50mm

Origin

China

HS Code

8302100000

Production Capacity

100000PCS

Key features

3D Adjustable Concealed Hinge: Allows precise alignment with 180-degree opening angle for seamless installation.

High Load Capacity: Supports door weight up to 60kg per pair for heavy-duty applications.

Premium Zinc Alloy Material: Constructed from durable zinc alloy with stainless steel #304 screws for longevity.

Customizable Door Thickness: Compatible with door thickness ranging from 40mm to 50mm.

OEM and ODM Services: Full customization available for packaging and product specifications.

Fast Delivery Options: Standard lead time of one month for both peak and off-peak seasons.

Flexible Payment Terms: Accepts T/T, PayPal, Western Union, and customizable deposit ratios.

Professional Manufacturer: Established in 2000 with 30+ series of concealed hinge systems.

Company profile

Dongguan Shengang Precision Metal & Electronic 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, etc. CertifiedExport Year: 19 Years CertifiedNearest Port: Shenzhen Port, Guangzhou PortAverage Response Time: ≤3.92h

AI-Powered supplier vetting

SummaryDongguan Shengang Precision Metal & Electronic Co., Ltd. is a China-based limited trading/manufacturing company established in 2007, with a stated founding description also referring to February 2000. It operates from Dongguan, Guangdong, with 117 employees, a 5,550 m² manufacturing plant, six production lines, and 5 R&D engineers. Its product range centers on door and window hardware, including hinges, locks, handles, closers, stoppers, and sliding or folding-door fittings. The supplier reports ISO 9001:2015 certification, OEM/ODM cooperation, international export coverage, and sales in Europe, America, Southeast Asia, and the Middle East. Production-management and technical capabilities are supported by stated equipment, engineers, quality-control personnel, and testing activities. However, the provided information does not substantiate after-sales procedures, financial strength, specific customer cases, or measurable customization performance.

Supplier typeThe supplier is identified as a China-based limited company and trade company, while its descriptions also characterize it as an international manufacturer integrating R&D, production, and sales of door and window hardware. This indicates a combined trading and manufacturing profile rather than a purely trading entity.

CertificationsThe supplier explicitly reports holding an ISO 9001:2015 certificate for its management system. This is direct evidence of a recognized quality-management certification, although the scope and validity details are not provided.

R&D capabilityThe supplier reports advanced production equipment, leading production technologies, 5 R&D engineers, mold-making and product-testing activities, and multiple product types including adjustable concealed and casement hinges. These statements directly support active technical development and product innovation capability.

Production capacityThe supplier reports a 5,550 m² manufacturing plant, six production lines, advanced equipment, production technologies, dozens of production staff, quality-control personnel, and a production-management system. Its stated product scope and broad export markets further indicate established operating capacity.

Customization capabilityThe supplier states that its engineers conduct R&D, mold making, production and processing, and product testing, and that it cooperates with international brands through OEM and ODM. These activities explicitly support customization capability, although no customization examples, minimum quantities, or technical limits are specified.