Door and Window Frame Roll Forming Line

Door and Window Frame Roll Forming Line — A professional manufacturer offering comprehensive solutions covering the entire door and window sector, with one-stop delivery from steel strip to finished product.

I.Series Overview

The Door and Window Frame Roll Forming Line is a complete cold-roll forming production system designed specifically for manufacturing various steel door and window frame profiles. As core structural components of architectural door and window systems, the cross-sectional precision and structural strength of these frames directly determine installation quality, sealing performance, and service life. Utilizing a continuous cold-roll forming process, this equipment transforms metal coils into finished profiles through an integrated workflow—encompassing uncoiling, leveling, punching, roll forming, cutting, and discharging—in a single pass.
The cold-roll forming process employs a series of sequentially arranged forming rollers to continuously bend metal strips (such as coils) transversely, rapidly shaping them into open or closed profiles. Compared to traditional stamping or bending methods, cold-roll forming offers significant advantages, including high material utilization, superior dimensional accuracy, high production efficiency, and low costs.
This series provides comprehensive cold-roll forming solutions for the full range of door and window frame profiles—including open-type frames, closed-type frames, and inner window frames. It is compatible with various materials, such as cold-rolled steel, galvanized steel, and stainless steel, handling thicknesses ranging from 0.8 mm to 2.0 mm. The equipment features fully automated PLC control and a touchscreen HMI, ensuring a continuous, automated workflow from uncoiling to the discharge of finished products.
The products strictly comply with the industry standard JG/T 152-2003, "Steel Profiles for Multi-functional Residential Door Frames." This standard applies to multi-functional residential door frame profiles manufactured from cold-rolled steel sheets or strips using cold-roll forming processes.

II. Introduction to Various Equipment Types

1. Cold Bending Forming Equipment for Open Door and Window Frames
Equipment Overview
The cold bending forming equipment for open door and window frames is a specialized cold bending forming production line for producing open-type steel door and window frame profiles. Open-section cold-bent steel profiles have relatively simple cross-sectional shapes and mature forming processes, making them one of the most widely used door and window frame profile types on the market. The equipment can produce various open-section profiles such as security door frames, fireproof door frames, and ordinary door frames.
Core Advantages
Multiple Profiles in One Machine, Flexible Production: Enables the production of multiple profile types on a single machine, meeting the production needs of different specifications of door and window frames.
High Efficiency and Stability: The production line speed can reach 0-15m/min, with stable and reliable performance.
High-Precision Forming: The roller material is GCr15, quenched (HRC58-62), with high hardness and good wear resistance.
Fully Automatic Control: The PLC automatic control system enables full-process digital management.
Equipment Composition
The equipment mainly consists of a feeding machine, guiding section, leveling section, punching device, forming main unit, cutting machine, receiving table, electrical control cabinet, and other components. The hydraulic station utilizes accumulators and PLC control, enabling high-speed punching and shearing. Equipped with various hydraulic punching and grooving devices, it can cut/punch all necessary holes/grooves online, allowing products to be directly bent into complete door or window frames without further processing.
Applications: Security door frames, fireproof door frames, ordinary door frames, PVC window steel linings, door lining steel profiles, etc.

2. Closed-section door and window frame cold bending forming equipment
Equipment Overview
The closed-section door and window frame cold bending forming equipment is a specialized cold bending forming production line for producing closed-section steel door and window frame profiles. Compared to open-section cold bending steel, closed-section cold bending steel has a more complex and generally asymmetrical cross-sectional shape, resulting in significant differences in welding quality control, dimensional control, and forming equipment. Closed-section profiles offer significant advantages such as high structural strength, good torsional resistance, and aesthetic appeal, making them the preferred profile type for high-quality steel doors and windows.
Core Advantages
High Strength with Closed Sections: The closed section forms a closed tubular structure, resulting in more even stress distribution under external forces and significantly higher structural strength than open profiles.
Advanced Welding Technology: Closed profiles utilize two closure methods: welding and interlocking. Welding is primarily used in the production of closed cold-formed profiles made from carbon structural steel strips and alloy steel strips, with common methods including high-frequency induction welding, high-frequency resistance welding, and tungsten inert gas welding. Interlocking is mainly used in the production of closed cold-formed profiles made from thin coated strips.
Multiple Precision Forming Passes: Closed profile forming requires more passes (approximately 41 passes) and auxiliary deformation tools to ensure stable closed section dimensions and tight joints.
Stable Forming Quality: Utilizing appropriate forming and welding processes ensures stable and reliable forming and welding quality.
Applications: High-quality security door frames, fireproof door frames, closed window frames, and high-end residential and commercial building door and window frame systems.

3. Cold Bending Forming Equipment for Inner Window Frames
Equipment Overview
The cold bending forming equipment for inner window frames is a specialized cold bending forming production line for producing steel inner window frame profiles and PVC window steel liners. The inner window frame is the frame structure surrounding the window opening on both sides and top in a door and window system; its cross-sectional accuracy directly determines the installation quality and sealing performance of the window.
Core Advantages
Professional Inner Window Frame Forming: Specifically designed for the cross-sectional characteristics of inner window frame profiles, resulting in high forming accuracy and good consistency.
PVC Window Support: Can produce PVC window steel liners, a key supporting equipment in PVC door and window manufacturing.
Multi-Type Production: Can produce multiple panel types on a single machine, with high production efficiency and good straightness.
Compact Equipment: The entire line has a compact design, small footprint, and is suitable for various factory layouts.
Equipment Composition
The equipment mainly consists of a feeding machine, guiding section, leveling section, punching, forming main unit, cutting machine, receiving table, and electrical control cabinet. The production process is: feeding → leveling → punching → forming → cutting → receiving.
Applications: PVC window steel lining, steel inner window frame, door and window inner steel lining, etc.

III. Technical Parameters of the Equipment Series

Item Parameter
Applicable materials: Cold-rolled sheet, galvanized sheet, stainless steel, Q235, etc.
Material thickness: 0.8–2.0 mm (customizable)
Material strength ≤350 MPa
Production line speed: 0–15 m/min (up to 20 m/min)
Number of forming stations: 18–41 (depending on profile complexity)
Shaft diameter Φ60–Φ80 mm
Roller material: GCr15/Cr12MoV, quenched (HRC 58–62)
Main motor power: 5.5–15 kW
Cutting precision ±0.5 mm
Control system: Fully automatic PLC control
Operators 1 person

IV. Production Process

Uncoiling → Leveling → Punching → Roll Forming → Cutting → Discharge

Process Description
Uncoiling: Load the metal coil onto the uncoiler for stable material feeding.
Leveling: Precision leveling using a leveler to eliminate internal material stress.
Punching: Hydraulic punching unit performs precise punching for mounting holes, lock holes, etc.
Roll Forming: Multi-stage progressive cold-roll forming to gradually shape standard door and window frame profiles.
Cutting: Hydraulic fixed-length cutting ensures high precision and clean, smooth edges.
Discharge: Output of finished products in an orderly manner.

V. Application Areas

The door and window frame profiles produced by this equipment series are widely used in the following sectors:
Residential and Civil Buildings: Door and window frame systems for offices, retail stores, private homes, and apartments—featuring high strength, corrosion resistance, and high dimensional precision.
Commercial and Public Buildings: Door and window frame systems for shopping malls, hotels, office buildings, hospitals, and schools—meeting high architectural standards.
Security and Fire-Rated Doors: Fully automated production of security and fire-rated door frames—serving as the core structural components of these doors.
UPVC (Steel-Reinforced) Doors and Windows: Production of steel reinforcement profiles for UPVC doors and windows—key auxiliary equipment for their manufacture.
Industrial Buildings: Door and window frame profiles for industrial plants, warehouses, and similar facilities.
Export Projects: Production of door and window frame profiles destined for international markets.

VI. Market Outlook

Driven by the continuous growth of the global construction industry and rising quality standards for doors and windows, the market for cold-roll forming equipment for door and window frames is showing a positive growth trend.
Continued growth in the cold-roll forming equipment market: By 2025, the market size for cold-roll forming equipment in China exceeded RMB 18 billion, with a compound annual growth rate (CAGR) of approximately 7.2%. Domestic production of cold-formed steel rose by about 8.3% year-on-year, with particularly strong demand in sectors such as construction door frames and light-gauge steel framing. High-speed, high-precision, and fully automated cold-roll forming lines have become the mainstream choice for purchasers.
Significant advantages of steel door and window profiles: Cold-formed steel profiles for door and window frames offer benefits such as optimized cross-sectional shapes, high dimensional accuracy, and lightweight characteristics. Steel door frame profiles are manufactured from cold-rolled steel sheets or strips using cold-bending and rolling processes, adhering to established industry standards.
Cold-roll forming replacing traditional processes: Cold-roll forming technology enables rapid processing of metal materials, significantly boosting production efficiency while reducing energy consumption and manufacturing costs. High-precision processing ensures stability and consistency, meeting the construction industry's stringent requirements for component accuracy.
Expanding export markets: Chinese cold-roll forming equipment for door frames has successfully entered European markets, such as Spain, and international demand for China's high-quality door and window frame forming equipment continues to grow.

VII. Service & Support

Solution Design: Personalized equipment selection and production line layout based on customer product drawings, capacity requirements, and target markets.
Custom Manufacturing: Support for non-standard customization; orders can be placed using cross-sectional drawings or samples, with full oversight from roll design to complete machine fabrication.
Installation & Commissioning: On-site installation, commissioning, and operator training provided by engineers to ensure rapid production startup.
After-Sales Support: Long-term technical consultation and spare parts supply, along with online technical support throughout the product lifecycle; engineers hold all necessary visas and are available for on-site service worldwide.
Continuous Optimization: Equipment modification and capacity upgrade services available to adapt to changing production needs.

VIII. Why Choose Us?

Nearly 20 Years of Manufacturing Experience: Mature technology, refined processes, and reliable quality.
Comprehensive Product Range: One-stop supply of all door and window frame profiles, including open-type frames, closed-type frames, and inner window frames.
High-Precision Manufacturing: Cutting precision of ±0.5mm, far exceeding industry standards.
Efficient Production: Line speeds of 0–15m/min; the entire line can be operated by a single person.
Fully Automated Intelligent Control: PLC automation with touchscreen interface; features one-touch setup and automatic counting.
Industry Standard Compliance: Products strictly adhere to the JG/T 152-2003 standard for "Steel Multifunctional Residential Door Frame Profiles."
Rugged Durability: Quenched GCr15/Cr12MoV rollers (HRC 58–62) ensure long service life and consistent precision.
Direct Manufacturer: No middlemen, offering excellent value for money.