china door frame roll forming machine are used to produce door frames and related components through an efficient, automated roll forming process. Roll formed door frames offer durability, dimensional accuracy, and flexible production capabilities. This article provides a comprehensive overview of roll formed door frame production lines from China, covering equipment types, technical parameters, applications, specifications, suppliers, installation, operation, maintenance, and more.
Overview of China Door Frame Roll Forming Equipment
Roll forming is a continuous bending operation in which sheet or coil material is progressively formed into a desired cross-sectional profile through consecutive sets of contoured rolls. Door frames and jambs require an open cross-section profile.
China is a major manufacturer and exporter of roll forming equipment for door frame production. Key advantages of China suppliers are:
- Cost-effective pricing and good value
- Customization to buyer requirements
- Quick delivery times
- Availability of full production lines
- Strong R&D capabilities
- Excellent after-sales service and support
Main Types of China Door Frame Roll Formers
There are two main configurations of door frame roll forming machines from China – C-type and O-type.
| Type | Description |
|---|---|
| C-Type Roll Former | C-shaped machine with forming rolls positioned on the top and bottom. Material is fed horizontally. Suitable for high-volume production. |
| O-Type Roll Former | O-shaped machine with forming rolls on the sides. Material is fed vertically. Compact footprint. Lower capacities. |
Door Frame Roll Forming Machine Types Comparison
| Parameter | C-Type Roll Former | O-Type Roll Former |
|---|---|---|
| Production Speed | Higher, up to 18 m/min | Lower, up to 10 m/min |
| Production Volume | High-volume applications | Lower-volume batches |
| Footprint | Larger | Compact |
| Material Feeding | Horizontal | Vertical |
| Cost | Higher for heavy-duty models | Lower for basic models |
Roll Forming Technology for Door Frames
- PLC control system
- Servo motor driven forming rolls
- Decoiler for sheet uncoiling
- Automatic punching units
- Corner notching devices
- Cut-off knives
- Hydraulic folder for bending
- Conveyor systems
Complete door frame production lines also integrate supporting processes like punching, notching, shearing and sawing.
Door Frame Styles Produced
- Residential frames
- Commercial and industrial frames
- Steel and aluminum frames
- Hollow metal doors
- Fire-rated doors
- Storm doors
- Security doors
- Insulated doors
Typical Sections Produced
- Jambs
- Headers
- Mullions
- Sills
- Stiles
- Rails
- Glazing stops
- Casing trim
- Brickmould
Applications and Uses of Roll Formed Door Frames
Roll formed door frames provide dimensional stability, durability, and design flexibility at optimized costs.
Industries and Sectors Using Roll Formed Door Frames
| Market Segment | Description |
|---|---|
| Construction | Residential and commercial building construction |
| Institutions | Schools, hospitals, public buildings |
| Retail | Stores, shopping malls, restaurants |
| Hotels | Hospitality and tourism infrastructure |
| Industrial | Warehouses, factories, manufacturing plants |
| Infrastructure | Airports, metro stations, stadiums |
Benefits of Using Roll Formed Door Frames
- Consistent and precise dimensions
- High production rates for cost efficiency
- Custom profiles can be produced
- Versatile material options like steel, aluminum
- Suitable for hollow metal doors and fire-rated doors
- Eco-friendly process with low waste
- Powder coating can be applied for colors and protection
- Integration with doors, hardware and glazing
Technical Specifications and Design Standards
Roll formed door frames must conform to design specifications, dimensional standards, and building codes.
Key Specifications
| Parameter | Typical Range |
|---|---|
| Material Thickness | 16 gauge (1.6mm) to 20 gauge (1mm) |
| Frame Width | 35mm to 250mm |
| Profile Depth | 32mm to 150mm |
| Corner Joints | Mitered 45-90° cuts |
| Maximum Length | 6.5m for C-type <br> 3.5m for O-type |
| Hole Spacing | 50mm increments |
| Hole Diameter | 8-30mm |
| Notch Height | 10-25mm |
| Notch Width | 8-15mm |
Roll Formed Door Frame Dimensional Standards
| Standard | Description |
|---|---|
| ANSI/SDI A250.8 | Specifications for Standard Steel Doors and Frames |
| DIN 18111 | Tolerances for Door Leaves and Frames |
| EN 12519 | Windows and Doors – Terminology |
| AAMA 101 | Voluntary Specification for Aluminum Prime Windows and Sliding Glass Doors |
Design Considerations
- Frame strength and rigidity
- Joint construction for stability
- Corner notching and reinforcement
- Hardware accommodations
- Wall opening dimensions
- Thermal insulation needs
- Glazed openings
- Fire rating requirements
- Load deflection limits
- Corrosion resistance
China Door Frame Roll Forming Machine Suppliers
Many manufacturers in China export high-quality roll forming machines for door frame production.
Notable China Suppliers
| Company | Location | Product Range |
|---|---|---|
| Botou Xianfa | Hebei | C-type and O-type roll formers |
| Dingtek | Jiangsu | Full door frame lines |
| Jou Yu | Shandong | Aluminum and steel machines |
| Liuzhou GME | Guangxi | Up to 1000 mm line widths |
| Metform | Shanghai | Custom roll forming solutions |
| Reliableway | Guangdong | 10+ models available |
Cost and Pricing Details
- Base price range: $5,000 to $50,000
- Varies by speed, capacities, automation features
- C-type machines more expensive than O-type
- Complete production lines cost over $100,000
| Type | Capacity | Price Range |
|---|---|---|
| Manual C-Type | 50 m/hr | $10,000 – $15,000 |
| Automatic C-Type | 120 m/hr | $20,000 – $40,000 |
| High-Speed C-Type | 180 m/hr | $50,000 – $80,000 |
| Manual O-Type | 40 m/hr | $5,000 – $10,000 |
| Automatic O-Type | 80 m/hr | $15,000 – $25,000 |
- Additional costs for shipping, installation, training
- Spare parts, wear items incur maintenance costs
Installation and Operation
Proper installation and operation procedures must be followed to achieve optimal performance from the roll forming equipment.
Installation Guidelines
- Level concrete foundation with sufficient load bearing strength
- Leave clearance for safe material loading and offloading
- Anchor machine securely and precisely align forming sections
- Proper connection of electrical, pneumatic and hydraulics
- Install safety guarding around moving parts
- Integrate conveyors and downstream cutting/bending machines
- Calibrate sensors, controls and instruments
Operation and Usage Tips
- Strictly follow manufacturer instructions
- Allow proper warm-up and test runs during commissioning
- Gradually increase speeds during initial production
- Monitor product quality and machine parameters frequently
- Perform trial runs before batch production
- Balance production flow to downstream processes
- Ensure skilled supervision and trained operators
- Adhere to safety, maintenance and operational protocols
Maintenance and Troubleshooting
Regular maintenance and prompt troubleshooting ensures maximum working life and productivity.
Routine Maintenance Activities
| Task | Frequency | Details |
|---|---|---|
| Inspection | Daily | Check for leaks, loose parts, unusual noises |
| Lubrication | Weekly | Apply grease and oil per schedule |
| Machine Cleaning | Monthly | Remove dust, dirt and debris |
| Belt Adjustment | Quarterly | Inspect and adjust belt tension |
| Forming Rolls | 6 months | Inspect for wear or damage, replace if required |
| Sensor Calibration | Yearly | Re-calibrate sensors and instruments |
Troubleshooting Guide
| Issue | Possible Causes | Action to Take |
|---|---|---|
| Poor part quality | – Worn forming rolls<br>- Misaligned rolls<br>- Improper sheet thickness | – Replace damaged rolls<br>- Realign rollers and guides<br>- Use material per specifications |
| Excessive noise | – Loose machine parts<br>- Bearing failure<br>- Roll imbalance | – Tighten loose parts<br>- Replace bearings<br>- Rebalance or replace rolls |
| Reduced output | – Low line speed<br>- Frequent downtime<br>- Material jams | – Run machine at rated speed<br>- Identify and fix downtime issues<br>- Clear jams, adjust guides |
- Always consult manual and contact manufacturer for complex faults
- Proper maintenance is key to maximize up-time and productivity
Choosing a Door Frame Roll Forming Machine Supplier
Several factors must be evaluated when selecting a roll forming machine supplier from China.
Key Considerations for Supplier Selection
| Factor | Importance | Evaluation Criteria |
|---|---|---|
| Product Quality | Very High | Proven quality controls, international certifications |
| Technical Capabilities | High | Innovative technology, R&D investments |
| Customization | High | Ability to tailor machine to needs |
| Production Capacity | Medium | Sufficient capacity for order quantities |
| Cost and Pricing | High | Competitive pricing, value for money |
| Lead Time | Medium | Reasonable delivery schedules |
| Service Support | Very High | Responsiveness for technical support, spare parts availability |
| Company Reputation | High | Goodwill and trustworthiness of supplier |
- Obtain detailed technical literature on specifications
- Require video demonstrations of machines in operation
- Visit supplier factory if possible for inspection
- Speak with previous clients for feedback on performance
- Ensure local after-sales service support is available
Pros and Cons of China Door Frame Roll Forming Machines
Roll forming lines from China offer notable advantages but also have some limitations.
Advantages of China Door Frame Roll Formers
- Cost-effectiveness, significant cost savings
- Advanced technology comparable to western suppliers
- High degree of customization for specific needs
- Fast turnaround, quick delivery times
- Availability of complete production lines
- Hands-on technical support and field assistance
- Convenient sourcing of spare parts
- Shared language and easier communication
Limitations of China Door Frame Roll Formers
- Limited quality assurance compared to western brands
- Communication gaps arising from language barriers
- Challenges in legal contracting and intellectual property issues
- Difficulty in resolving disputes due to regulations
- Lack of control and oversight during manufacturing
- Higher perceived risk due to unfamiliarity
Conclusion
China door frame roll forming machines provide automated, efficient production of door frames combined with competitive pricing. This makes them an attractive option, but careful selection of a qualified supplier is vital. By following the guidance provided here, end users can take advantage of China’s manufacturing capabilities to obtain high-performing roll forming equipment that matches their production needs and business goals. The key is finding the ideal balance between cost savings and product quality.
FAQs
What are the main advantages of roll formed door frames?
Roll formed door frames offer dimensional consistency, design flexibility, fast production, and cost efficiency compared to traditional fabrication methods. The roll forming process minimizes material waste.
What thickness and grades of steel are used?
Cold rolled steel coil from 16 gauge (1.6mm) to 20 gauge (1mm) with finishes up to Galvanneal is commonly used. Grades such as CS and FS for structural and framing applications.
What about roll forming aluminum door frames?
Yes, aluminum coils from 0.7mm to 2mm thickness can be roll formed into door frames. Alloy grades like 6063 and 6005 are commonly used.
Can the profiles be powder coated?
Yes, roll formed parts can be power coated after fabricating for colors, finishes, and corrosion resistance.
What welding is required for door frame assembly?
Mitered corners of jambs and header are typically joined by MIG welding. Riveting or mechanical fastening may also be used.
How to design proper accommodations for hardware?
Reinforcing plates may need to be welded around hinge, lock, and closer locations specified by door manufacturers.
What building standards are applicable?
ASTM E283 for air infiltration testing. ANSI A250.4 for physical endurance testing. SDI 118 for steel frames. FEMA 320/361 for storm shelters.
How to reduce acoustic transmission through door frames?
Specialized seals, gaskets, and sound-dampening materials can be incorporated into frame cavities.
What maintenance is required for roll formed door frames?
Occasional touch-up painting for minor abrasions. Lubrication of weatherstripping and hardware. Periodic inspection.