Engineered for safety, reliability, and maximum efficiency under global compliance standards
As an authorized distributor of
Through our partnership with Wolong, we integrate century-old engineering heritage, cutting-edge material science, and global compliance systems. This ensures that every explosion-proof and NEMA-standard motor we deliver operates flawlessly under the harshest oil, gas, chemical, and mining conditions.
Evaluating hazardous environments and NEMA/IEC compliance requirements
Fully compliant flameproof protection certificates covering European ATEX, International IECEx, and Eurasian CU-TR (EAC) regulations. Our motors are built to isolate electrical arcs, preventing catastrophic thermal runaway events.
We offer premium IE3, IE4, and cutting-edge IE5 energy-saving topologies. Combining high-grade magnetic steel and induction designs, these systems drastically lower operational costs and greenhouse emissions.
An expansive portfolio covering low, medium, and high-voltage three-phase asynchronous AC motors. Engineered for fractional and heavy multi-megawatt configurations, we meet custom application criteria.
Acquisitions and technical synergies driving Wolong's product development
Wolong has built motor and drive control research centers in China, Europe, and Japan, alongside its central institute in Shanghai. This framework fosters advanced magnetic material science, structural engineering, and variable frequency speed control, placing our products at the forefront of the industry.
Our portfolio includes leading domestic brands such as Nanyang Explosion-Proof, alongside century-old global leaders: Brook Crompton, Morley, Laurence Scott, Schorch, and ATB. This positions us as a premier supplier for complex global oil, gas, and power projects.
Built for reliability under extreme stresses, our flameproof, increased safety, and positive pressure motors are certified to national and international standards. They provide safe, reliable operation in high-risk zones, coal mines, and chemical refineries.
Wolong acquired 97.94% of the ATB Group, integrating Morley's heavy-duty underground mining expertise and Laurence Scott's low-starting-current generator designs.
Schorch joined the group, bringing over a century of high-voltage engineering experience in oil, gas, chemical processing, and shipbuilding.
China's largest explosion-proof motor research and manufacturing base merged into Wolong, centralizing the development of large-scale flameproof machinery.
Acquiring GE's commercial and industrial motor division expanded Wolong's presence in high-specification North American NEMA markets.
Through strategic integrations, Wolong has combined domestic production efficiency with European design standards and North American NEMA compliance. This network provides a unified platform to support global projects with localized parts, servicing, and certification.
Validating performance, safety, and reliability across worldwide jurisdictions
Nemko / ATEX
CSA Standard
CE Directives
CCC Ex
SABS Approved
To ensure seamless operations globally, we maintain a complete compliance framework. Our facilities undergo regular audits by international authorities, ensuring our design, testing, and production methods meet or exceed global standards.
Examining the structural mechanics of our explosion-proof motors
Our cast aluminum rotors are manufactured using centrifugal casting or high-pressure die-casting, forming a single-piece structure that integrates the rotor bars and end rings. This design minimizes internal air pockets, offering high mechanical strength and reliable torque start characteristics. For large-scale motors, copper bar rotors are used. These feature welded copper bars and end rings, supported by high-speed protective retention rings. This construction ensures stable operation under severe structural stress and frequent start-stop cycles.
Stator coils are wrapped with high-mica-content polyester film and glass-fiber reinforced tapes. The complete assembly undergoes a Vacuum Pressure Impregnation (VPI) process using solvent-free resins, producing a dense, void-free insulation layer. This process provides excellent dielectric strength, resistance to moisture, and thermal stability (Class F or H), ensuring reliable operation and electrical longevity in hot, humid, or chemically aggressive environments.
Developed using multi-physics structural and fluid simulation tools, our high-strength cast iron and steel frames feature excellent mechanical rigidity and thermal dissipation properties. These heavy-duty casings are built to contain internal explosions without deformation or gas venting. High structural stiffness dampens vibrations and isolates natural frequencies, keeping bearing wear low and extending the operating life of the motor.
The low-noise ventilation system consists of an engineered fan cover, air guide cylinder, protection window, and sound-absorbing silencer plates. Featuring a side-inlet design, the assembly minimizes air turbulence and propagation losses, lowering overall motor noise. The IP22-rated protective guard prevents debris ingress while maintaining optimal cooling airflow to prevent hotspots.
Delivering high-reliability drive systems across demanding global industries
Our motors drive high-pressure pumps, compressors, and fans in refineries, offshore platforms, and pipelines. Our flameproof enclosures contain potential electrical faults, protecting personnel and assets from flammable gases.
Developed for continuous face miners, conveyors, and ventilation fans, these high-torque motors are built to withstand high levels of dust, moisture, and vibration typical of underground coal and hard-rock mines.
Featuring corrosion-resistant finishes, advanced IP protection, and marine certifications (such as DNV Type Approval), these motors provide reliable, continuous performance for thrusters, winches, and pumps in marine environments.
Driving the next generation of safe, smart, and ultra-efficient industrial drives
The industrial motor landscape is transitioning toward higher efficiency classes and smart, connected systems. To support this shift, our technical roadmap focuses on integrating advanced thermal management, smart diagnostics, and ultra-efficient electromagnetic designs.
By utilizing high-grade permanent magnet materials and optimized pole geometries, we are developing IE5+ efficiency platforms that reduce losses by up to 20% compared to standard induction machines. Additionally, our smart monitoring systems track real-time vibration, temperature, and current patterns to enable predictive maintenance and prevent unplanned downtime.
Technical guidance and answers for explosion-proof and NEMA motor integration
High-capacity flameproof, variable frequency, and marine propulsion motors
NANFANG
