Engineered to meet the exact parameters of urban tunneling excavations, subterranean reinforcement, and high-consequence explosive atmospheres. Designed for premium durability.
Barcelona and the wider Catalonia region serve as one of Southern Europe's primary industrial and infrastructural epicenters. The metropolitan expansion, marked by complex engineering breakthroughs such as the massive L9/L10 Metro line extension (one of Europe’s longest and deepest underground transit tunnels), demands exceptional geological engineering solutions. Excavations beneath dense urban structures require highly reliable rock support systems where safety and explosion mitigation are paramount.
In subterranean construction, pockets of methane gas, pockets of combustible hydrogen in utility routes, or volatile dust can trigger cataclysmic events if sparked by regular electrical systems. This is why standard construction equipment is strictly banned. The deployment of Explosion-Proof Mining Shotcrete Machines certified to stringent European directives has become the standard operational prerequisite for contractors bidding on major public tenders in Barcelona, Catalonia, and across Spain.
Additionally, Catalonia's heritage of potash mining in the Bages region, as well as extensive railway tunneling projects slicing through the Pyrenees, places unique demands on machinery. The concrete sprayed must exhibit immaculate mechanical bonding, while the sprayers themselves must operate safely under hazardous parameters, guaranteeing zero heat or electric spark risks.
Group I & II Certified
Years Engineering R&D
Operational Reliability Rate
Max Spray Output Options
How our technical systems neutralize risks while maintaining peak volumetric efficiency during rapid geological structural stabilization.
Accumulation of dry coal dust or particulate mineral residue in tunnel chambers is a ticking bomb. Our advanced hydraulic and pneumatic dosing systems leverage wet-mix shotcrete technology, capturing particulates before they ever become airborne. By integrating dust-suppressive dosing nozzles, our systems slash particulate emissions by up to 85% compared to baseline dry spray rigs.
Our electric explosion-proof systems feature specialized copper-free aluminum alloy enclosures, certified to withstand internal gas detonations without propagating flames externally. Relays, motors, and smart sensors utilize low-voltage energy-limiting circuitry to ensure no spark can achieve ignition thresholds, regardless of atmospheric gas density.
Reducing aggregate and cement waste (rebound) is vital for subterranean budget constraints and operator lung health. By optimizing the rotor chamber design and applying state-of-the-art nozzle atomizers, SSG machines drop rebound rates to under 10% for wet-spraying, translating directly to massive bottom-line savings on structural concrete volume.
Pioneering next-generation spraying dynamics. Our engineering path leads directly toward automated, low-carbon, zero-fatality job sites.
Integrating electromagnetic flowmeters coupled with programmable logic controllers (PLCs). The system dynamically adjusts the accelerator dosage in exact proportion to real-time pump displacement, safeguarding concrete setting consistency even as ambient pressures shift.
Developing modular, dual-mode power structures capable of seamlessly switching between electric and pneumatic feeds. This guarantees uninterrupted application during regional grid instability or compressor pressure drops deep within tunneling faces.
Integrating LiDAR sensors and computerized depth mapping onto modular boom extensions. Fully automated spraying sequences determine structural rock profiles, maintaining ideal perpendicularity to minimize rebound and keep operators out of the unsupported hazard zone.
Deploying high-precision production technologies to achieve impeccable structural durability at unbeatable cost-efficiency ratios.
At Henan SSG Machinery Co., Ltd., based in the high-tech industrial manufacturing corridor of Henan, China, we have modernized our production lines to meet the strict technical standards of the European Union. By combining precision machining with deep supply chain integration, we guarantee reliable parts availability and highly consistent material science profiles.
Our workshop utilizes premium, state-of-the-art milling, boring, and turning equipment to guarantee dimensional tolerances of less than 0.02mm, which is crucial for high-pressure grout chambers and rotating wear plates.
High-Power CNC Laser Cutting Center at our Zhengzhou City production base.
Entering the Spanish industrial infrastructure ecosystem requires more than just high-quality machines—it demands unconditional regulatory compliance and rapid local service response times. To meet this requirement, Henan SSG Machinery has forged partnerships with established hydraulic and heavy engineering firms across Spain. This ensures that every unit we ship is fully supported on-site.
Our entire catalog of explosion-proof concrete sprayers carries individual CE declarations and is built according to **ATEX Directive 2014/34/EU** standards. This ensures quick safety sign-offs by local work safety inspectors (Inspección de Trabajo y Seguridad Social) at Spanish sites.
We maintain a regional inventory of critical wear components—including high-chrome steel friction plates, rubber sealing plates, steel-wire reinforced discharge hoses, and spray nozzles—located close to primary shipping routes for overnight delivery to Barcelona and surrounding areas.
We offer comprehensive operator training and commissioning protocols for civil engineering teams. Our Spanish-language training manuals cover critical safety steps, including safe depressurization, nozzle cleaning techniques, and standard ATEX zone maintenance procedures.
For procurement officers, sourcing machinery for tunnels and mines requires looking beyond the initial purchase price. The ultimate goal is minimizing long-term Total Cost of Ownership (TCO) while ensuring maximum reliability. Below is our engineered breakdown of critical evaluation metrics to consider when sourcing heavy-duty concrete spraying systems:
| Evaluation Criterion | Industry Benchmark Standard | SSG Technical Standard | Project Financial Impact |
|---|---|---|---|
| Sealing Plate Lifespan | 60 - 80 working hours | Up to 120 working hours | Reduces downtime by 35%, cutting labor overhead. |
| Aggregate Rebound Loss | 15% - 25% (Standard dry spray) | < 8% (Optimized wet mix) | Saves up to $18 per cubic meter of sprayed concrete. |
| ATEX Compliance Cost | Expensive post-market retrofits | Factory integrated compliance | Eliminates expensive third-party inspection delays. |
| Custom Voltages | Rigid 380V/50Hz options only | All local voltages available | Eliminates the cost and weight of auxiliary phase transformers. |
Henan SSG Machinery Co., Ltd. is a professional manufacturer specializing in the research, development, production, and sales of construction and engineering machinery. Since its establishment, the company has been committed to providing high-quality equipment and comprehensive solutions for customers worldwide.
Located in Zhengzhou City, Henan Province, China, SSG Machinery enjoys a strategic geographical location and convenient transportation network, enabling efficient delivery and service to domestic and international markets. The company operates a modern production facility and warehouse center equipped with advanced manufacturing equipment, strict quality control systems, and professional testing instruments to ensure reliable product performance.
The company currently employs a team of experienced engineers, technicians, and skilled workers. Our technical staff possesses extensive industry expertise and continuously focuses on product innovation, technological improvement, and customized solutions to meet the diverse requirements of customers in different industries.
Over the years, SSG Machinery has developed into a trusted supplier of construction machinery and engineering equipment, earning an excellent reputation for product quality, competitive pricing, and professional after-sales service.
Innovation is one of the core driving forces behind SSG Machinery's growth. We continuously invest in research and development to improve product performance, energy efficiency, operational safety, and intelligent control systems.
Our engineering team works closely with customers to develop customized equipment solutions based on specific project requirements, ensuring maximum efficiency and practical value.
Quality is the foundation of our business. Every product undergoes strict inspection and testing procedures before delivery.
Our products are manufactured in compliance with international quality standards and have obtained certifications such as:
Customer satisfaction is our top priority. We provide:
Henan SSG Machinery Co., Ltd. is committed to becoming a globally recognized supplier of construction machinery and engineering equipment. Guided by the principles of integrity, innovation, quality, and customer satisfaction, we will continue to provide reliable products and professional services to customers around the world and create greater value together.
Select from our full catalog of ATEX-compliant concrete spraying and grouting rigs. High performance guaranteed for tough underground applications.
Direct answers to key technical and regulatory questions for underground mining and urban tunneling operations.
Get in touch with our technical application team for a detailed engineering analysis, custom pricing, and site feasibility studies.
SSG Machinery
