What is the maximum door weight supported?

The hinge can bear a door weight of 100KG per 2 pieces.

Koblenz Same Style Factory Customize Concealed Hidden 40 80 Kg Interior Swing Door Hinge Invisible 3D Adjustable Hinges

Name: Koblenz Same Style Factory Customize Concealed Hidden 40 80 Kg Interior Swing Door Hinge Invisible 3D Adjustable Hinges
Brand: Dongguan Shengang Precision Metal & Electronic Co., Ltd.
SKU: 1950486701

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

US$30.00

100-999 Pieces

US$28.00

1,000-4,999 Pieces

US$25.00

5,000-999,999 Pieces

US$10.00

1,000,000+ Pieces

Sample price:US$35.00/piece.Request sample

Product profile

Customization

Available

Warranty

2 Warranty

Type

180°Hinge

Model NO.

SG-25135

Finish

Zinc Plated

Material

Iron

Intermediate Gap

11mm

Min Door Thickness

35mm

Max Door Weight

80kg/2PCS

Function

3D Adjustable

Feature

Hidden/Adjustable

Transport Package

White Inner Boxes, Yellow-Brown Outer Cartons

Specification

135*28*70mm

Trademark

Origin

China

Production Capacity

10000piece/Pieces

Key features

High Load Bearing Capacity: Supports door weights up to 100KG per pair, ensuring stability for heavy interior doors.

OEM/ODM Customization: Accepts custom logos, packaging, and specific gap/thickness requirements for branded orders.

Premium Material Options: Available in zinc alloy or aluminum alloy with zinc plating for rustproof and durable usage.

Professional Manufacturer: Factory with 20+ years experience, multiple patents, and advanced CNC/die-casting equipment.

Versatile Application: Suitable for wooden doors, interior doors, and swing doors with thickness around 35-36mm.

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: ≤2.03h

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.

Product Q&A

Q:Are you a manufacturer or trading company?

We are a professional factory and exporter for more than 20 years. We could accept OEM, ODM service for one station purchase for you.

Q:Can you offer samples?

Sure, we could provide samples for your testing and checking first. If you need, please send us TM or inquiry.

Q:What are your company strengths?

1. Leader in concealed door hinge industry in China. 2. Gained multiple patent certificates. 3. Monthly new arrivals. 4. High grade of raw material for rustproof and durable usage. 5. Professional sales & after-sales team. 6. Quick response to inquiries. 7. Customization accepted.

Q:What are your trade and payment terms?

Usually under EXW, but we accept FOB, CFR, CIF, DDP etc. Payment is usually by T/T, but we also accept LC, D/P, PayPal, Western Union.

Q:Can I customize my logo and packaging?

Yes, we could customize logo and package for you. Please share your brand name or logo with us on TM or inquiry.