What is the lead time for production?

The average lead time is one month for both peak season and off-season.

Can the packaging be customized?

Yes, customized packaging services are available upon request.

What is the minimum door thickness required?

The minimum door thickness required is 40mm.

Zinc Alloy Folding Door Hinge Hidden Hinge

Name: Zinc Alloy Folding Door Hinge Hidden Hinge
Brand: Dongguan Shengang Precision Metal & Electronic Co., Ltd.
SKU: 868119855

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

US$1.00-25.00

100 Pieces

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 Folding Door Hinge Hidden Hinge

Size

140*29.50mm

Door Weight

2PCS for 60kg

Door Thickness

40, 45, 50mm

Open

180 Degree

Finishing

Baking

Fireproofing

Transport Package

White Inner Boxes, Yellow-Brown Outside

Specification

140*29.50mm

Origin

China

HS Code

8302100000

Production Capacity

100000PCS

Key features

180 Degree Opening: Provides a full 180-degree opening angle for maximum accessibility.

Heavy Duty Capacity: Supports up to 60kg door weight per pair of hinges.

Premium Material: Constructed from durable zinc alloy with stainless steel #304 screws.

Customizable Service: Offers customized packaging and personalized efficient customer service.

Fast Delivery: Ensures prompt delivery for small orders and mass production.

OEM/ODM Support: Manufacturer supports OEM and ODM services for custom requirements.

Flexible Payment: Accepts T/T, PayPal, Western Union, and small amount payments.

Quality Assurance: Established in 2000 with a focus on high-quality manufacturing.

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.