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MEGODOOR Provides High-Speed Door Solutions for Ex db IIB T4 Gb / Ex tb IIIC T135°C Db Applications
In special industrial environments such as petrochemical plants, fine chemical workshops, pharmaceutical facilities, powder processing plants, spray painting areas, and hazardous material storage zones, customers no longer look for a door that simply opens and closes. In areas where explosive gases and combustible dust may both be present, the door system must meet higher safety standards.
As a manufacturer focused on customized industrial door solutions, MEGODOOR can provide high-speed roll-up door systems designed to meet the requirements of Ex db IIB T4 Gb / Ex tb IIIC T135°C Db, helping customers achieve safer, more efficient, and more reliable personnel and logistics access control in hazardous areas.
Dual Explosion-Proof High-Speed Doors for Gas and Dust Hazardous Areas
In some industrial applications, explosive gas and combustible dust may exist at the same time. This is common in chemical raw material workshops, pharmaceutical intermediate production areas, powder feeding zones, spray coating areas, and solvent handling environments. In these cases, ordinary high-speed doors are not suitable.
At MEGODOOR, we believe that a high-speed door for such environments should not only offer the basic advantages of industrial doors, such as fast opening and closing, frequent operation, and good sealing performance, but should also be equipped with properly matched explosion-proof control systems, explosion-proof control boxes, explosion-proof operating devices, and related integrated control solutions according to the hazardous area classification.
For customers requiring Ex db IIB T4 Gb / Ex tb IIIC T135°C Db, MEGODOOR can develop a more practical and project-oriented high-speed roll-up door solution based on the actual site conditions.
How MEGODOOR Understands Dual Explosion-Proof High-Speed Door Projects
In MEGODOOR’s view, a dual explosion-proof high-speed door project is not simply about adding several explosion-proof accessories. It requires a full understanding of the customer’s site conditions, including:
- Door opening size and installation conditions
- Type of hazardous media in the area
- Explosion-proof requirements for gas and dust
- Daily operating frequency of the door
- Whether integration with equipment, access control, AGV systems, air shower rooms, or conveyor lines is required
- Whether status feedback, remote control, or interlock functions are needed
Different projects have different requirements. Some customers focus more on explosion-proof safety, while others care more about logistics efficiency. Many customers also need the door to provide sealing, dust isolation, area separation, and communication linkage functions at the same time. Therefore, MEGODOOR does not simply apply a standard product, but matches the solution to the real application scenario.
Application Scenarios for MEGODOOR Dual Explosion-Proof High-Speed Doors
1. Chemical Workshops
In chemical factories, some areas may contain volatile gases, while combustible dust may also be generated during batching, packaging, and material transfer. In such environments, the door must meet hazardous area safety requirements while maintaining high traffic efficiency for forklifts, personnel, and pallet movement.
2. Pharmaceutical and Intermediate Production Areas
Pharmaceutical factories often require cleanliness, dust control, and area separation. At the same time, some processes involve alcohol, solvents, or powder raw materials. MEGODOOR can provide door configurations that combine explosion protection with fast and convenient access.
3. Powder, Additive, and Granular Material Production Areas
Industries such as starch, milk powder, feed additives, chemical powders, and metal powders place great importance on dust explosion protection. If gas risks also exist, the overall configuration requirements for the door system become even higher.
4. Spray Painting, Coating, and Solvent Handling Areas
Areas around spray booths, paint mixing rooms, and hazardous material zones usually have strict requirements for safety performance, integrated control, and fast response. MEGODOOR can provide high-speed door solutions that better match the workflow of industrial production sites.

Features of MEGODOOR Dual Explosion-Proof High-Speed Door Solutions
Customized According to Project Requirements
MEGODOOR does not treat dual explosion-proof high-speed doors as a single standard model. Instead, each solution is customized according to the project requirements. Different door sizes, site environments, and control needs can all be addressed with targeted configurations.
Fast Opening and Closing for Higher Traffic Efficiency
For industrial environments with frequent movement, high-speed roll-up doors can significantly improve the passage efficiency of people and goods, reduce waiting time, and suit areas where forklifts, AGVs, and logistics vehicles pass through frequently.
Support for Multiple Control and Linkage Methods
According to customer requirements, MEGODOOR high-speed doors can work with:
- Conveyor line linkage opening
- AGV communication and automatic door control
- Access control system integration
- Air shower room dual-door interlock
- Equipment start/stop signal linkage
- Open-position, closed-position, and fault alarm feedback signals
For factories with a high level of automation, these functions can greatly improve overall operating convenience.
Sealing, Dust Control, and Area Separation
In addition to explosion-proof requirements, many customers also need the door to help with dust control, isolation, energy saving, and reduction of air exchange. MEGODOOR considers the curtain material, sealing method, opening speed, and site environment together when designing the solution.
Better Suited for Industrial Project Delivery
MEGODOOR has long experience serving industrial customers and understands the practical needs involved in installation, commissioning, system integration, and project acceptance. Compared with simply selling standard door products, we place greater emphasis on complete project delivery capability.
Why More Customers Value Complete System Capability
Many customers ask us:
“Does using explosion-proof electrical components mean the door is already a dual explosion-proof high-speed door?”
From a project delivery perspective, the answer is not that simple.
MEGODOOR believes that a reliable dual explosion-proof high-speed door solution should focus on the following:
- Whether the explosion-proof rating matches the site requirement
- Whether the whole system is configured properly, rather than only some components being explosion-proof
- Whether the solution matches the actual control logic on site
- Whether installation, commissioning, and later maintenance are convenient
- Whether the system can balance daily high-frequency operation with long-term stability
For hazardous area projects, customers are not only buying a product. They are also choosing project experience, technical coordination capability, and after-sales support.
Services MEGODOOR Can Provide
For projects requiring high-speed roll-up doors that meet Ex db IIB T4 Gb / Ex tb IIIC T135°C Db, MEGODOOR can support customers with:
- Door opening measurement and solution recommendations
- Non-standard high-speed roll-up door customization
- Explosion-proof supporting solution design
- Linkage control interface reservation
- Integration with access control, equipment, AGV systems, and other automation systems
- Installation and commissioning guidance
- After-sales maintenance support
If customers already have drawings, technical specifications, or tender requirements, MEGODOOR can also configure the solution accordingly to improve communication efficiency and project execution.
When high-speed doors are used in hazardous areas, safety always comes first. For industrial environments where explosive gas and combustible dust may both be present, choosing a dual explosion-proof high-speed roll-up door solution that meets Ex db IIB T4 Gb / Ex tb IIIC T135°C Db helps ensure smoother project implementation and more stable long-term operation.
As a customized industrial door manufacturer, MEGODOOR can provide dual explosion-proof high-speed roll-up door solutions based on the customer’s actual site conditions. We focus not only on the door itself, but also on whether the entire solution truly fits the site, operates reliably, and is easy to manage.
If you are looking for a manufacturer of high-speed roll-up doors for dual explosion-proof requirements, MEGODOOR welcomes your inquiry. We can recommend a more suitable industrial door solution according to your industry, door size, explosion-proof requirements, and linkage control needs.



