Kangjian Kangjian

Windows and doors parts Supplier & Factory for Serbia

High-Precision Structural Aluminum Extrusions & Hardware Systems engineered for Balkan Climate Realities & EU Compliance

Featured Building Architectural Systems for Serbia

6063 T5 Door Extruded Aluminum Profiles for Belgrade Projects

6063 T5 Door Extruded Aluminum Profiles for Belgrade Architectural Projects

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Lightweight Door & Window Aluminum Hardware for Novi Sad

Custom Lightweight Door & Window Aluminum Hardware for Novi Sad Developments

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Shower Room Door Aluminum Profile Systems for Serbian Projects

Premium Shower Room Door Aluminum Profile Systems for Serbian Projects

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High-Strength 6061 6063 Aluminum Profiles for Serbian Windows

High-Strength 6061 6063 Aluminum Profiles for Serbian Window Manufacturers

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Serbia’s Architectural & Industrial Construction Evolution

Over the past decade, Serbia has emerged as a focal point for infrastructure investment and commercial construction within the Western Balkan region. The rapid expansion of urban centers such as Belgrade, Novi Sad, Niš, and Kragujevac has catalyzed a significant demand for high-performance building systems. Major structural initiatives—most notably the Belgrade Waterfront project and massive industrial logistics parks along the pan-European transport corridors—have transformed the local architectural language.
Historically reliant on legacy structural frameworks, the contemporary Serbian construction market requires advanced, lightweight, and thermally-broken systems. This structural shift is propelled not only by aesthetics but by rigorous local building regulations. Architects and engineering consultants across the region are actively seeking building components that can provide high structural resistance to wind load, absolute water tightness, and acoustic dampening. High-rise developments in Belgrade’s business districts have created a strict technical environment where conventional window and door hardware is no longer sufficient. To succeed in this landscape, developers must partner with suppliers capable of providing high-grade aluminum extrusions engineered to meet specific European mechanical stresses.

Belgrade Urban Dynamics

High-density multi-story residential and mixed-use commercial developments demanding wind resistance up to Class C5 (EN 12210) and high acoustic decoupling parameters due to increasing urban noise levels.

Industrial & Logistics Hubs

Massive manufacturing sites and supply hubs near the Belgrade-Novi Sad corridor requiring heavy-duty industrial door tracks, large-span aluminum frames, and robust mechanical structures capable of high duty cycles.

Import Substitution & Supply Security

Mitigating regional logistical bottlenecks through optimized maritime routes ending at Thessaloniki, Rijeka, or Constanța, with smooth land logistics directly into mainland Serbia.

Regulatory Directives & Energy Efficiency in Serbia

As an official candidate for EU membership, Serbia is systematically aligning its building codes and regulatory regimes with European standards. Crucially, the Serbian Rulebook on Energy Efficiency in Buildings enforces strict U-value (thermal transmittance) limitations for all external envelope systems. For new buildings, the maximum allowed thermal transmittance for external windows and glazed doors is capped at 1.5 W/m²K (which is even lower for premium public structures).
Meeting these compliance metrics demands a technological pivot. Pure aluminum is highly conductive; hence, the use of advanced polyamide thermal breaks (such as PA66 GF25) within the extruded profile systems has become mandatory. Structural hardware, locking mechanisms, hinges, and friction stays must also meet performance criteria under EN 14351-1, validating mechanical strength, air permeability, water tightness, and structural wind resistance.
Additionally, the industrial sectors require specialized welding certifications like EN 15085 and ISO 3834, as well as strict adhesive bonding regulations such as DIN 6701. These certifications ensure that structural components will perform safely over decades of heavy service. The table below represents the performance requirements required by Serbian general contractors for structural glazed solutions:
Performance Criterion EU/Serbian Reference Standard Target Architectural Metric
Thermal Transmittance (U-Value) EN ISO 10077-1 / Rulebook on Energy Efficiency ≤ 1.3 - 1.5 W/(m²·K) for complete systems
Air Permeability EN 12207 Class 4 (Highest sealing efficiency)
Water Tightness EN 12208 Class 9A (Withstands heavy driving rain)
Wind Load Resistance EN 12210 Class C4 / C5 for high-rise buildings
Acoustic Performance EN ISO 717-1 Rw (C; Ctr) = 40 dB to 48 dB (Acoustic glazing)

Qingdao Kangjian Aluminum Industry Technology Co., Ltd.

Headquartered at No. 168, Tianshan 1st Road, Jimo District, Qingdao, Qingdao Kangjian Aluminum Industry Technology Co., Ltd. has rapidly grown since its formal commercial consolidation in 2022 to become a premier supplier of engineered aluminum solutions. Operating a production facility covering an area of 200 mu (with 80,000 square meters of high-tech production plants and 4,000 square meters of administrative centers), the factory operates an annual extrusion capacity of 15,000 tons of high-precision profiles.
15K T
Annual Capacity
5 Lines
Extrusion Presses
200 Mu
Industrial Campus
90+
Technical Experts
The manufacturing capabilities are supported by five advanced extrusion lines: including one 2500T, one 1450T, one 1150T, and two 700T extruders. This configuration allows us to fabricate a wide range of profile sizes and complex multi-void structural geometries. In addition, our robust quality systems are certified under GB/T19001-2016/ISO9001 Quality Management System, GB/T24001-2016/ISO14001 Environmental Management, IATF16949 Automotive Quality Management, ISO22163 Railway Industry Management, EN15085 and ISO3834 Welding standards, AWS welding specifications, and DIN6701 Bonding regulations. This deep compliance allows us to cater to highly demanding industrial markets, providing unparalleled structural safety for Serbian buyers.
Kangjian Aluminum Extrusion Factory Floor

Supply Chain Resilience: From Qingdao Port to Belgrade Logistics Parks

In international procurement, logistics efficiency and cost control are critical. Leveraging Jimo's unique location relative to Qingdao Port, Kangjian has structured a highly efficient logistics network that reduces transport delays into Central and Eastern Europe. We utilize optimized maritime trade lanes to deliver goods directly to South-East European entry points, specifically:

Route A: Port of Thessaloniki (Greece)

The primary entry point for southern shipments. Cargo is unloaded and transported via the Belgrade-Skopje-Thessaloniki railway or direct road networks, ensuring swift customs clearance into Serbia.

Route B: Port of Rijeka (Croatia)

An ideal maritime hub for northern and western regions of Serbia. Direct connection via the regional E70 expressway allows delivery straight to Belgrade and Novi Sad warehouses within days of arrival.

Route C: Port of Constanța (Romania)

Direct Danubian and inland freight routing to eastern Serbian manufacturing hubs, keeping transportation costs highly competitive for heavy industrial extrusions.

Precision Profile Inspection
Extrusion Die Pre-Heating and Setups
Export Logistics Packaging and Loading

Brand Story: Forging High-End Aluminum Profiles with Global Scope

In Qingdao, a dynamic maritime city along the Yellow Sea, the foundations for high-precision aluminum extrusions were laid in 2022. The founders recognized a critical bottleneck: a scarcity of custom extrusion facilities capable of combining tight engineering tolerances with large-scale industrial output.
Backing domestic growth and aiming towards international markets, Kangjian has established a robust "dual-sea layout". The commitment to produce premier materials and serve demanding global markets is built into our processes. Through investments in advanced extrusion machinery and rigorous testing processes, our high-strength, corrosion-resistant profiles are trusted by major marine, automotive, and building projects worldwide.
From high-speed rail profiles to structural system components for high-rise commercial structures, Kangjian represents reliability, durability, and expert engineering.
Qingdao Factory Landscape High-quality Anodized Profiles

Alloy Optimization: 6063-T5 vs. 6061-T6 for Structural Integrity

For windows, sliding doors, and curtain walling structures in Serbia, choosing the appropriate alloy grade and temper is essential. We mainly work with Al-Mg-Si alloys, specifically customizing properties via heat treatment to achieve optimal characteristics.

6063-T5 Aluminum Profile Systems

Composition: Mg (0.45–0.9%), Si (0.2–0.6%), Fe (≤ 0.35%).
Mechanical Properties: Tensile strength ≥ 160 MPa, Yield strength ≥ 110 MPa, Elongation ≥ 8%.
Application: Ideal for complex architectural profiles, window frames, door stiles, and custom structural extrusions. Provides excellent surface finishes for anodizing and powder coating.

6061-T6 Heavy-Duty Component Hardware

Composition: Mg (0.8–1.2%), Si (0.4–0.8%), Cu (0.15–0.4%), Cr (0.04–0.35%).
Mechanical Properties: Tensile strength ≥ 290 MPa, Yield strength ≥ 240 MPa, Elongation ≥ 10%.
Application: Specially reserved for heavy-duty structural connector plates, high-stress window anchors, robotic arms, and PV bracket frameworks requiring high structural load capacities.

Innovation

Innovation-Driven Engineering

We develop high-precision custom profile geometries to meet specific thermal performance and spatial clearances required by architectural designs.

Quality

Strict Quality Control

Our testing laboratories trace alloy compositions, dimensional tolerances, anodization thickness, and tensile strength characteristics for every batch.

Support

Robust Logistical Partnerships

We support transparent global trade, arranging ocean shipping, bulk container packing, customs documentation, and regional freight solutions.

Core Extruded Aluminum Applications for Serbia

Globally Verified Quality Certificates

ISO Quality Certificate
Management Certificate
Welding Certification
Environmental System
Quality Management System
ISO Standard
High-Tech Standard
IATF16949 Auto Quality Certificate

Partners & Collaborators

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Technology Roadmap: Future-proofing Balkan Construction

The global construction framework is rapidly incorporating sustainable design and technological integration. For Serbian developers aiming to build carbon-neutral structures or high-performance facilities, Kangjian is continuously aligning its production lines to support these future requirements:

Low-Carbon Recycled Aluminum Extrusions

Transitioning to primary aluminum billets processed with renewable energy sources and integrating up to 60% post-consumer scrap content to assist developers in attaining LEED and BREEAM certifications in Serbia.

Smart Building & BIPV Frame Solutions

Extruding customized curtain wall framing systems optimized to house Building Integrated Photovoltaic (BIPV) panels, helping turn conventional facades into active energy producers.

High-Precision CNC Integration

Expanding CNC machining centers to deliver fully processed, pre-drilled, tapped, and countersunk profiles directly to door and window assembly lines, reducing local labor overheads.

Production Process Advanced Extrusion Geometry Precision Surface Treatment Automated Material Handling Profile Anodizing Bath Quality Testing Bench

Serbian Project Showcases & Structural Applications

Our custom structural profiles are designed for architectural and infrastructure projects demanding structural durability and weathering resistance. Explore our global structural applications below:
Facade System Installation

Thermal Facades for Belgrade Commercial Towers

Custom structural profiles designed for double-glazed curtain walls, providing wind resistance and structural durability.

Industrial Logistics Gate Components

Heavy-Duty Hardware for Novi Sad Industrial Estates

Heavy-gauge extrusion tracks and high-duty roller assemblies engineered for large-span warehousing facilities.

High-Rise Window Anchors

Integrated Window Systems for Residential Blocks

Multi-chamber profile designs integrating co-extruded EPDM gaskets for acoustic insulation and sealing.

Maritime Port Crane Assemblies

Corrosion-Resistant Components for Transit Hubs

Specially anodized high-thickness components built to withstand weathering and industrial environmental exposure.

Core Product Range & Architectural Components

Custom CNC Machining Aluminum Profiles for Serbian Precision Engineering

Custom CNC Machining Aluminum Profiles for Serbian Precision Engineering

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Extruded Aluminum Robotic Framework Components for Serbian Automation Hubs

Extruded Aluminum Robotic Framework Components for Serbian Automation Hubs

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Solar PV Mounting System Aluminum Alloys for Central Serbian Solar Farms

Solar PV Mounting System Aluminum Alloys for Central Serbian Solar Farms

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Custom Mechanical Structure Aluminum Extrusions for Belgrade Heavy Industries

Custom Mechanical Structure Aluminum Extrusions for Belgrade Heavy Industries

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Industrial Aluminum Robotic Arm Components for Serbian Manufacturing Lines

Industrial Aluminum Robotic Arm Components for Serbian Manufacturing Lines

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Lightweight Door Shower Room Aluminum Hardware for European Construction Sites

Lightweight Door Shower Room Aluminum Hardware for European Construction Sites

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Photovoltaic Solar Alloy Frames for High-Efficiency Energy Projects in Serbia

Photovoltaic Solar Alloy Frames for High-Efficiency Energy Projects in Serbia

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OEM Extruded Aluminum Robotics Kits for Technical Institutes in Nis

OEM Extruded Aluminum Robotics Kits for Technical Institutes in Nis

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Information Hub & Frequently Asked Questions

1. Do your windows and doors parts comply with the Serbian Rulebook on Energy Efficiency?
Yes. We supply thermally-broken aluminum extrusions designed to fit insulation bars like polyamide (PA66 GF25). When combined with appropriate low-E triple glazing, our profile designs help systems meet the strict thermal transmittance requirement of ≤ 1.5 W/m²K enforced by Serbian building authorities.
2. What is the typical transit duration from your Qingdao factory to Belgrade?
Shipments loaded at Qingdao Port normally reach Southern and Eastern European transit ports (like Thessaloniki, Rijeka, or Constanța) in 30 to 35 days. From there, land freight directly connects to destination warehouses across Serbia within 3 to 5 business days, including customs handling.
3. Do you provide custom die development for unique architectural window shapes?
Yes. Our CAD/CAM engineering division works directly from client technical drawings. We fabricate custom extrusion dies to match exact geometry specifications. We verify dimensions with coordinate measuring machines (CMM) before beginning volume extrusion.
4. What surface treatments do you offer to protect profiles from coastal and industrial weathering?
We offer specialized anodizing (up to 25 microns) and Qualicoat-certified electrostatic powder coating. These treatments provide high UV resistance, salt-spray durability, and protection against chemical corrosion in industrial zones.
5. What are your Minimum Order Quantity (MOQ) policies for custom extrusions?
For standard profiles, our typical starting batch is 1 to 3 tons per run. For custom-designed geometries requiring dedicated tooling, the MOQ depends on the profile's cross-sectional weight. We are happy to accommodate trial batches for qualified long-term commercial projects.

Start Your Custom Project Evaluation Today

If you are developing multi-family residential structures in Belgrade, planning manufacturing logistics hubs in Novi Sad, or sourcing raw extrusions for regional distribution networks, our engineering division is ready to assist. Contact us to receive alloy analyses, mechanical test sheets, and competitive FOB/CIF quotations.
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