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Engineered from aircraft-grade aluminum, stainless steel, and galvanized alloys to deliver maximum structural integrity, advanced thermal dissipation, and verified environmental protection.
Precision-stamped and laser-cut parts tailored for telecommunication base-stations and electrical sub-rack frameworks.
Ultra-accurate laser contouring and perforation designed for high-density electrical ventilation and harness routing.
Heavy-duty NEMA and IP-rated modular control boxes built to house sensitive PLCs, inverters, and switchgear units.
Custom mounting plates, internal DIN-rail brackets, and door chassis engineered for rugged industrial control boxes.
How exponential growth in 5G infrastructure, edge data nodes, smart energy grids, and Industry 4.0 automation is redefining custom metal chassis engineering.
The global demand for custom sheet metal enclosures within the telecommunications and electrical control sectors has transitioned from generic containment boxes into ultra-precise, highly specialized thermal and physical protection hubs. As telecommunication infrastructure accelerates toward millimeter-wave 5G and early-stage 6G deployments, outdoor equipment is exposed to extreme weather variations, ultraviolet degradation, electromagnetic interference (EMI), and aggressive salt-spray corrosion. Off-the-shelf catalog cabinets can no longer satisfy the spatial constraints, high thermal fluxes, and specific ingress protection ratings demanded by top-tier telecom carriers and industrial automation integrators.
Simultaneously, the electrical control engineering sector is experiencing an unprecedented shift toward decentralized intelligence. Distributed smart grids, utility-scale renewable energy storage systems (BESS), solar inverter hubs, and robotics automation panels require enclosures that combine high mechanical rigidity with sophisticated internal routing architecture. High-precision sheet metal fabrication empowers design engineers to integrate multi-compartment partitions, vibration-dampening sub-chassis, and robotic continuous-weld seams that ensure dust-tight, water-submersion-resistant seals (IP66, IP67, and NEMA 4X ratings).
Custom aluminum and stainless steel housings engineered with micro-fin heat sinks, active thermoelectric cooling, and zero-compromise RF pass-through apertures for outdoor edge micro-datacenters.
Formulated with hot-dip galvanized steel, marine-grade AL 5052-H32, and fluorocarbon powder coatings resistant to 1000+ hours of continuous salt-spray exposure under ASTM B117 standards.
High-precision internal mounting matrices, laser-cut DIN-rail mounting plates, and segregated high/low voltage channels designed for seamless PLC, VFD, and SCADA hardware integration.
Bespoke sheet metal fabrication tailored to the rigorous demands of distinct high-tech operational environments.
In telecommunication ecosystems, custom sheet metal enclosures serve as the frontline defense for active and passive network hardware. Remote Radio Units (RRUs), baseband units (BBUs), and optical cross-connect terminals generate substantial internal heat loads while confronting direct solar radiation. Our specialized fabrication integrates extruded aluminum heat-pipe channels, double-wall solar radiation shield panels, and precision-foamed PU sealing gaskets. These engineering safeguards guarantee internal operating stability even when ambient temperatures swing from -40°C to +65°C.
Industrial control boxes, Variable Frequency Drive (VFD) enclosures, and Motor Control Centers (MCC) require flawless spatial optimization and electromagnetic shielding (EMC). High-power switching generates significant electromagnetic noise that can disrupt low-voltage logic controllers. Through specialized beryllium-copper gasket grooves, zinc-plated conductive mating surfaces, and seamless laser-welded joint seams, our custom sheet metal control boxes eliminate EMI crosstalk while providing arc-resistant containment for hazardous operational zones.
Utility-scale solar farms and microgrid battery containers demand modular sheet metal control panels engineered for rapid field serviceability and stringent fire retardancy. Custom sheet metal fabrication enables multi-tier busbar isolation, seismic-rated tie-down structures, and integrated liquid cooling manifold brackets that comply with UL 9540A safety standards.
| Application Sector | Recommended Materials | Target Ingress / Standard | Thermal Management Type | Key Fabrication Techniques |
|---|---|---|---|---|
| 5G Outdoor Telecom Node | Aluminum 5052-H32 / Stainless 304 | IP65 / IP66 / NEMA 4X | Air-to-Air Heat Exchanger / Dual Wall | Fiber Laser Cutting, CNC Bending, Robotic TIG |
| Factory Automation PLC Panel | Cold-Rolled Steel (SPCC) / SECC | IP54 / IP55 / NEMA 12 | Forced Air Ventilation with Louvered Filters | High-speed Punching, Laser Welding, Powder Coat |
| Solar & BESS Control Inverter | Hot-Dip Galvanized / Al-Mg-Zn Alloy | IP66 / NEMA 3R / NEMA 4 | Liquid Cold Plate & Heat Dissipation Fins | Heavy Gauge Bending, Stud Welding, Gasket Foaming |
| Marine & Petrochemical Control | Stainless Steel 316L (Electropolished) | IP67 / IP68 / NEMA 4X | Closed Loop Sealed Thermoelectric Air Cond. | Full Seam Continuous Welding, Passivation |
Our company focus on sheet metal fabrication, aluminum die casting, stainless steel casting.
Qingdao Lier Metal Products Co., Ltd. was established in 2007, We are Located in Chengyang District, Qingdao City, with a construction area of 10,000 square meters, more than 218 employees and products involved and automotive, medical equipment and home appliances.
We are from designers and engineers to production personnel, welders and machine operators, and quality inspectors, providing full-link metal processing customization for global customers.
As an industry-leading metal manufacturing supplier, serving various manufacture fields, including but not limited to automotive, electronics, medical, home appliance and etc.
Full-link vertically integrated metal fabrication from CAD modeling and precision laser cutting to surface finishing and international logistics.
Our Production Range Include Investment Casting, Sheet Metal Fabrication, Cnc Machining and Welding, Hot Deep Galvanized, Zinc Plate, Powder Coating Process.
Qingdao Lier Sheet Metal Products Co., Ltd. Has Passed Iso2000 System Certification. En15085, ts16949.
We Export Our High Quality Products to United Stated, Canada, australia, denmark, korea and Others Since 1995years.
The Company Has a Professional Design and Development Team, a Number of Senior Designers with More Than 20 Years of Design Experience.
Decades of proven precision metal craftsmanship empowering global market leaders in electrical controls and telecommunication hardware.
Founded in 2002, we have deep experience and mature technology in sheet metal and precision machining.
Equipped with laser cutting, CNC bending, robotic welding and precision machining. Smart factory launched in 2015 with full digital control.
ISO9001 / ISO14001 certified. Full inspection from raw material, production to delivery, ensuring high precision and stability.
Annual capacity up to 40 million pieces/sets, 80% for export. Stable mass production and on-time lead time.
Support OEM/ODM, custom made by drawings or samples. 7-day rapid sampling, 15–25 days mass delivery.
Long-term supplier for Siemens, Bosch, ABB, Schneider and other international brands, familiar with global standards and export procedures.
Independent import & export rights, providing one-stop service for customs declaration, documents, logistics and customized packaging.
With large-scale production and mature craftsmanship, we provide high-quality products at reasonable prices for long-term partnership.
Pioneering lightweight alloys, automated robotic fiber-laser welding, and intelligent IoT enclosure monitoring.
The convergence of physical sheet metal engineering with micro-sensor telemetry is giving rise to "Smart Enclosures". Modern telecommunication cabinets and power distribution hubs are now designed with dedicated internal structural bays for environmental sensors (humidity, temperature, vibration, door intrusion, and smoke detection). Through precision CNC punching and laser cutting, cable management channels and sensor brackets are integrated seamlessly into the enclosure chassis without compromising IP ratings or structural rigidity.
For aerial pole-mounted telecom enclosures and mobile control stations, weight reduction is paramount. Our engineering team utilizes advanced AL 5052-H32 and AL 6061-T6 alloys, offering over 45% weight savings compared to traditional cold-rolled steel while retaining exceptional tensile strength. Advanced FEA (Finite Element Analysis) stress simulations allow us to optimize bend radiuses and rib stiffeners, delivering maximum shock and wind-load resistance.
To adhere to strict RoHS and REACH directives, our automated electrostatic powder coating lines utilize zero-VOC, heavy-metal-free polyester and epoxy powder systems. Automated multi-stage pretreatment including zinc-phosphating and silane passivation ensures extreme adhesion and long-term corrosion resistance, guaranteed to withstand harsh coastal, desert, and industrial chemical environments.
From precision laser-cut sheet metal parts to complete electronic control box shells and custom equipment assemblies.
High-precision stamping, bending, and assembly parts for telecom racks and electrical chassis.
Ultra-accurate fiber laser cut components featuring burr-free edges and tight dimensional tolerances.
Standard and custom-dimensioned control panel boxes engineered for industrial automation.
Durable internal brackets, lock plates, and hinging systems for robust control box assembly.
Sanitary stainless steel (SUS304/316) enclosures built for hygienic and food-grade machinery.
Precision electronic housings designed with thermal vents and seamless electromagnetic shielding.
End-to-end custom metal fabrication, CNC shearing, punching, forming, welding, and surface treatment.
Heavy-duty commercial appliance chassis and vibration-dampening metal structural bases.