Founded in 2012, Wenzhou Cuyue Lock Technology Co., Ltd. is a leading comprehensive industrial hardware manufacturing enterprise specializing in three core product lines: cabinet locks, hinges, and handles. Backed by a dedicated, professional R&D and design team, Cuyue maintains complete in-house capabilities across product engineering, precision mold development, advanced manufacturing, and rigorous testing validation. By addressing the market’s growing demands for superior product quality, rapid delivery, flexible customization, and strict cost control, Cuyue provides reliable industrial locking and hardware system solutions to global OEM and B2B partners.
Among our specialized hinge offerings, the CL250-2 Stainless Steel Corner Concealed Hinge with Pin is engineered to provide hidden, clean-lined articulation and robust mechanical performance for demanding industrial enclosures.
1. Detailed Material Grade & Corrosion Resistance Performance
Material integrity and environmental durability are critical for hardware deployed in industrial cabinets and outdoor enclosures:
Premium SUS 304 Stainless Steel Construction: Manufactured from high-grade 304 stainless steel with a natural metal finish, the CL250-2 offers exceptional resistance against rust, chemical exposure, and atmospheric oxidation compared to standard carbon steel alternatives.
Corrosion Resistance & Salt Spray Performance: The high chromium and nickel content in the 304 stainless steel forms a passive protective oxide layer, ensuring long-term reliability in humid or coastal environments.
IP Rating Enclosure Matching: Designed for concealed corner integration, this hinge works seamlessly with enclosure gasketing systems to help electrical cabinets maintain high-performance IP-rated weatherproofing (such as IP65 dust-tight and water-resistant standards).
2. Detailed Technical Parameters & Specifications Table
To assist engineers, CAD designers, and procurement managers in quick technical evaluation, below are the core specifications derived from our official engineering documentation:
| Technical Parameter | Specification & Engineering Details |
| Model Number | CL250-2 (Corner Concealed Hinge Series) |
| Material Grade | 304 Stainless Steel (Natural Finish) / Carbon Steel Option |
| Surface Treatment | Stainless Steel Natural Color (White Zinc Plated for steel version) |
| Maximum Opening Angle | 120° Full Angular Rotation |
| Structural Design | Concealed corner mount with removable pin and $\emptyset4$ split ring |
| Mounting Style | Internal Concealed Screw Fixation |
| Application Suitability | Industrial cabinets, electrical enclosures, and flush-mounted doors |
3. Typical Industrial Application Scenarios
The CL250-2 concealed corner hinge is engineered for high-frequency industrial environments where aesthetic clean lines and secure internal mounting are required:
Electrical & Control Enclosures: Secures internal or flush-mounted doors on outdoor power distribution switchgear, low/medium voltage control panels, and automation boxes.
5G Telecom & Outdoor Base Station Cabinets: Provides reliable, hidden door articulation for remote telecommunication housings and fiber-optic junction boxes.
Server Racks & Data Center Enclosures: Delivers clean, concealed movement for enterprise server cabinets and network distribution frames.
Specialized Machinery & Instrument Housings: Fits discreetly into industrial machinery access panels where external hinges would disrupt the clean industrial exterior design.
4. Why Choose the Cuyue CL250-2 Concealed Hinge?
Concealed Aesthetic Design: Mounted inside the cabinet corner, the hinge remains hidden when the door is closed, delivering a sleek, tamper-resistant exterior.
Secure Pin & Split Ring Mechanism: Features a robust hinge pin secured with a $\emptyset4$ split ring, allowing for secure assembly while facilitating easy door removal during maintenance.
120-Degree Opening Clearance: Supports a smooth 120° opening angle, providing ample clearance for technicians to access internal equipment, wiring, and components.
Direct Manufacturer Advantages: As your direct manufacturing partner, Cuyue offers complete in-house R&D, mold development, and strict quality control, ensuring competitive pricing and reliable custom hardware solutions.
5. Frequently Asked Questions (FAQ)
Q1: What is the primary function of the CL250-2 concealed hinge?
A: The CL250-2 is designed for industrial enclosures to provide internal, hidden door mounting with a clean exterior profile and smooth 120-degree opening.
Q2: What material is used to manufacture the CL250-2 hinge?
A: It is manufactured from premium 304 stainless steel with a natural finish, offering outstanding corrosion and rust resistance.
Q3: What is the maximum opening angle of this concealed hinge?
A: The hinge supports an opening angle of up to 120 degrees, ensuring unobstructed access to the cabinet interior.
Q4: Does the CL250-2 include a removable pin?
A: Yes, it features a durable hinge pin secured with a standard $\emptyset4$ split ring for secure positioning and easy maintenance.
Q5: Is the CL250-2 suitable for outdoor Electrical & Control Enclosures?
A: Absolutely. Its 304 stainless steel construction makes it ideal for outdoor electrical enclosures exposed to moisture and harsh environmental conditions.
Q6: How does a corner concealed hinge improve cabinet security?
A: Because the hinge mechanism is housed internally within the cabinet corner, external tampering or pin removal from the outside is prevented when the door is locked.
Q7: What surface treatments are available for the CL250 series?
A: Depending on the material choice, options include stainless steel natural color and white zinc plated for carbon steel variants.
Q8: Can CUYUE customize hinge dimensions for OEM projects?
A: Yes. As a comprehensive hardware manufacturer with in-house R&D and mold tooling, Cuyue fully supports custom specifications, dimensions, and OEM/ODM requests.
Q9: Are carbon steel versions of this hinge available?
A: Yes, the CL250 series offers both carbon steel (white zinc plated) and 304 stainless steel options to suit different project budget requirements.
Q10: Why choose CUYUE as your industrial hardware supplier?
A: CUYUE combines over a decade of manufacturing expertise, in-house mold development, strict product testing, rapid delivery schedules, and cost-effective factory-direct pricing.
