English
русский
Français
عربى
Why choose us?
Shanghai Pinxing's Explosion-Proof Manufacturing Heritage
Shanghai Pinxing Explosion-proof Motor Co., Ltd. has focused on explosion-proof motor technology since establishment, developing specialized expertise in hazardous environment applications. Our manufacturing facility includes dedicated areas for explosion-proof motor assembly, with controlled environmental conditions to ensure consistent quality in critical safety components. The company maintains multiple international certifications for explosion-proof equipment production, supported by in-house testing capabilities for explosion containment verification.
Technical Development in Hazardous Area Protection
Our engineering department has developed proprietary design methodologies for explosion-proof motor optimization, including thermal modeling to predict surface temperatures under varying load conditions, pressure calculation for explosion containment, and flame path optimization for maximum safety margins. Research initiatives focus on materials science for improved flamepath durability and sensor integration for condition monitoring in inaccessible hazardous areas.
Certification and Compliance Management
Shanghai Pinxing maintains active certifications under IECEx, ATEX, and NEC/UL systems for explosion-proof motors. The certification portfolio covers multiple protection types (Ex d, Ex e, Ex nA, Ex t) and gas/dust groups. Our quality management system includes specific procedures for explosion-proof product traceability, with documented material certifications and manufacturing process controls for all safety-critical components.
Popular Industries And Applications
Petrochemical and Refining Operations
Refineries and petrochemical facilities utilize explosion-proof motors in areas where hydrocarbon vapors may be present, including pump stations, compressor buildings, loading areas, and processing zones. These applications require motors certified for Group IIA, IIB, or IIC gases depending on the specific hydrocarbons processed, with temperature classifications appropriate for the autoignition temperatures of the materials present.
Chemical Manufacturing and Processing
Chemical plants employ explosion-proof motors for mixing equipment, reactor drives, solvent handling systems, and drying operations where flammable solvents or reactive chemicals create explosive atmospheres. Applications often require consideration of both gas and dust hazards, with motors certified for combined environments or selected based on the dominant hazard present.
Grain Handling and Food Processing
Elevators, milling operations, and food processing facilities utilize explosion-proof motors in areas where combustible dusts accumulate. These applications require motors certified for dust explosion hazards (Group III), with particular attention to surface temperature limits and enclosure integrity to prevent dust ingress that could interfere with cooling or create internal dust accumulations.
Pharmaceutical Production
Pharmaceutical manufacturing employs explosion-proof motors in solvent recovery areas, tablet coating operations, and powder processing where flammable solvents or combustible powders create hazardous conditions. These applications often require specialized surface finishes for cleanability and validation documentation for regulatory compliance.
Wastewater Treatment and Biogas
Wastewater treatment facilities and biogas plants utilize explosion-proof motors in digester areas, sludge processing, and gas handling systems where methane and other biogas components create explosive atmospheres. These applications often involve high humidity environments requiring additional corrosion protection measures.
Hardcore Parameters
| Protection Type | Applicable Standards | Key Design Features |
| Flameproof (Ex d) | IEC 60079-1, ATEX | Enclosure withstands internal explosion, prevents flame propagation |
| Increased Safety (Ex e) | IEC 60079-7, ATEX | Prevents excessive temperatures, arcs, sparks during normal operation |
| Non-sparking (Ex nA) | IEC 60079-15, ATEX | Prevents ignition from sparks in normal operation |
| Dust Ignition Proof (Ex t) | IEC 60079-31, ATEX | Prevents dust ingress, limits surface temperatures |
| Pressurized (Ex p) | IEC 60079-2, ATEX | Maintains protective gas pressure above surrounding atmosphere |
| Voltage Range | 380V to 13.8kV | Low and high voltage configurations |
| Power Range | 0.75kW to 5000kW | Complete range for hazardous area applications |
| Temperature Class | T1 to T6 available | Based on gas group requirements |
| Gas Groups | I, IIA, IIB, IIC | Mining and surface industry applications |
| Enclosure Material | Cast iron, aluminum, stainless steel | Based on corrosion requirements and weight considerations |
| Ingress Protection | IP54 to IP66 | Dust and water protection levels |
| Ambient Range | -40°C to +60°C | Extended ranges for special applications |
| Certification Marks | IECEx, ATEX, UL, CSA | International approval markings |
| Bearing Isolation | Labyrinth seals, V-rings | Flame path interruption at shaft openings |
1-Minute Selection Guide
Material Compatibility with Hazardous Substances
Material selection considers chemical resistance to substances present in the operating environment. For hydrocarbon exposure, standard cast iron with epoxy coatings provides adequate protection. For acidic or alkaline environments, stainless steel enclosures or specialized coating systems may be required. Sealing materials must resist degradation from both the internal atmosphere (potentially containing arcing byproducts) and external contaminants. Gasket materials are selected based on temperature resistance and compatibility with expected chemicals.
Enclosure Material Trade-offs
Cast iron provides excellent explosion pressure resistance and corrosion protection but adds weight. Aluminum offers weight reduction and good heat dissipation but requires thicker sections for equivalent pressure resistance. Stainless steel provides maximum corrosion resistance but at higher cost. Fabricated steel allows custom dimensions and mounting configurations but requires careful weld procedure qualification for explosion-proof integrity.
Surface Treatment Selection
Surface treatments range from standard painting systems for general industrial environments to multi-coat epoxy systems for chemical exposure. Zinc-rich primers provide cathodic protection for steel components. Anodizing creates hard, corrosion-resistant surfaces on aluminum. Specialized coatings such as PTFE or ceramic-based materials are available for extreme chemical resistance or non-stick requirements in dust applications.
Customized services
Application-Specific Engineering
Shanghai Pinxing provides engineering services for explosion-proof motor applications, including hazardous area classification review, protection method selection, and custom design for unique operating conditions. Our technical team evaluates installation environments, process materials, and operational requirements to recommend appropriate motor specifications. Engineering deliverables include explosion protection documentation, installation drawings with safety clearances, and maintenance procedure development.
Certification Management Services
We offer certification management for projects requiring multiple international approvals or site-specific certifications. Services include documentation preparation for regulatory submissions, coordination with notified bodies, and maintenance of certification records throughout the equipment lifecycle. For modifications or repairs, we provide re-certification services to maintain compliance with explosion protection standards.
Specialized Manufacturing Capabilities
Our manufacturing facilities support production of explosion-proof motors with custom features including specific mounting configurations, auxiliary device integration, special surface finishes, and non-standard cooling arrangements. Quality control procedures specific to explosion-proof manufacturing include dimensional verification of flamepaths, pressure testing of enclosures, and temperature rise validation under worst-case conditions.
