Consistent surface protection is a critical production requirement for steel, tinplate, aluminum and other metal products. An uneven or excessive oil film can create quality defects, increase lubricant costs and complicate downstream handling. Suzhou Oiltech Electrostatic Technology Co., Ltd. develops integrated oil application equipment that helps metal producers control coating performance, protect finished surfaces and improve process efficiency across demanding production lines.
With more than two decades of experience in electrostatic oil application technology, Oiltech supplies equipment for metal strip, sheet and bar stock applications. Its solutions are designed for corrosion protection, forming lubrication and controlled surface treatment, with configurations available for tinplate, galvanized sheet, chrome-plated sheet, aluminum and aluminum alloy products.
Precise Oil Application for Industrial Production
Electrostatic oil application uses controlled charging and attraction to distribute lubricant across a moving metal surface. This supports a uniform oil film while reducing unnecessary overspray and lubricant waste. Depending on the production objective, the applied film can help isolate the surface from air and moisture, reduce corrosion risk, prevent scratches during rolling or slitting, and support reliable stacking, vacuum handling and cutting operations.
Oiltech offers both vertical and horizontal electrostatic oil applicators. Vertical models are intended for ultra-thin precision films, while horizontal models cover broader oil application requirements for corrosion protection and process lubrication. The available product range also includes a dedicated bar stock applicator and an air-spraying machine for applications requiring atomized oil or water-based conductive coatings.
Product Options for Different Line Requirements
LSA series vertical electrostatic oil applicator: The LSA series is designed for high-precision coating on vertical metal strip lines. Standard coating weight ranges include 2 to 12.5 mg/m² for finish coating of tinplate, chrome-plated sheet and aluminum strip, and 20 to 100 mg/m² for tinplate base material, tinplate recoiling and tin pretreatment lines. A self-developed control algorithm enables independent and precise coating weight adjustment. The combined-unit design supports both standard ranges, allowing flexible multi-grade production.
The LSA series incorporates a proprietary ionization system and constant-tension control technology to reduce maintenance workload and production interruptions. Its stable oil film output helps reduce surface craters and customer quality complaints. The equipment is developed for high-end, high-speed production environments where long-term reliability and consistent surface quality are essential.
WAX series horizontal electrostatic oil applicator: The WAX series is tailored for high-end international production lines. It supports coating ranges of 1.5 to 300 mg/m² for canstock tinplate base material and aluminum strip, and 100 to 3500 mg/m² for temper rolling lines, recoiling lines and hot-dip galvanizing lines. The system uses a Siemens S7-1500 automatic control system with distributed I/O.
The WAX series uses the same high-voltage power supply model as international top-tier electrostatic oil applicators, supporting spare-part interchangeability. Key system functions include active-standby redundancy for dependable operation. Optional functions include an adjustable-width blade beam, edge tracking, outlet oil mist purification and hot-air heating. The system can also support dry-oil coating and demanding product certification requirements associated with global automotive and electronics supply chains.
WSA series horizontal electrostatic oil applicator: The WSA series is a high-end horizontal solution with flexible configuration. Customers may select an in-house high-voltage power supply or an imported unit according to project requirements. The system provides functional redundancy, Siemens S7-1500 automation and independent real-time operation monitoring. Its configuration is intended to deliver high operational reliability while maintaining a practical total equipment investment for demanding end users.
HEOD series horizontal electrostatic oil applicator: The HEOD series provides a cost-effective option for a wide range of metal processing applications. It is available for 1.5 to 300 mg/m² coating on canstock tinplate base material and aluminum strip, as well as 100 to 3500 mg/m² coating for cold-rolled sheet, temper rolling, recoiling and hot-dip galvanizing lines. The compact structure simplifies maintenance and servicing. Siemens S7-1200 automation, an independently controllable high-voltage power supply and a combination of imported core components with leading domestic components support practical, reliable operation. The equipment can be customized to suit customer site conditions.
BC series oil applicator: The BC series is specially engineered for bar stock oil application. Its low application rate helps reduce lubricant consumption while maintaining controlled surface treatment. The equipment features Siemens S7-1200 automatic control and an independently controllable high-voltage power supply. For bar manufacturers serving high-end customers, the system is designed to improve surface quality and provide repeatable coating performance.
HPOD series oil applicator: The HPOD series horizontal oil spraying machine uses high-pressure air to atomize lubricant at the nozzle. A separate oil supply pump delivers lubricant to the spraying system, while instrument-grade compressed air carries atomized particles toward the moving metal strip. The system supports water-based conductive coatings, Siemens S7-1200 automatic control, explosion-proof design for flammable coatings and a purification system to help prevent overflow pollution.
Engineering Designed Around the Production Line
Oiltech supports equipment selection and customization based on material type, line arrangement, coating target, production speed and operating environment. Its systems can be integrated with tinning lines, automotive sheet processing lines, pickling lines, galvanizing lines, tension leveling lines and temper rolling lines. The equipment is also designed for compatibility with major international metallurgical line engineering systems, including SMS, Tenova and Danieli solutions.
The product photographs show enclosed teal-colored industrial applicator units installed in a workshop environment. Each visible unit includes inspection windows, external piping and a motor-driven oil supply assembly, with connected control and auxiliary equipment positioned nearby. The enclosed construction supports organized equipment integration and provides operators with access points for inspection and maintenance.
Manufacturing, Quality Control and Service Capability
Suzhou Oiltech operates from Suzhou, a major manufacturing and logistics center in the Yangtze River Delta. The company has its own site, standardized production facilities and dedicated workshops for complete oil applicators, oil mist purification equipment and intelligent control displays. Its manufacturing system includes precision machining and fabrication equipment such as five-axis gantry machining centers, fiber laser cutting machines and CNC press brakes.
Quality control is supported by inspection equipment for material analysis, color difference testing and oil film thickness measurement. Quality checks cover incoming materials, production processes and finished equipment. The company maintains ISO 9001 quality management, ISO 45001 occupational health and safety, and ISO 14001 environmental management certifications, with standardized procedures extending through production, inspection, delivery and after-sales service.
Engineering personnel support mechanical, electrical and electronic design, site surveys, customized process solutions and commissioning. Dedicated service engineers provide overseas project commissioning, troubleshooting and periodic inspection, supported by remote technical assistance. This service structure helps distributors, engineering contractors and end users manage installation and long-term operation with a clear technical support channel.
A Practical Partner for Global Metal Producers
Oiltech equipment has been supplied to steel, non-ferrous metal and specialty steel producers in domestic and international markets. Overseas project references include major metallurgical companies in India, Russia, Türkiye and Pakistan. The company also maintains cooperation with leading engineering contractors and metallurgical technology providers, supporting both direct owner projects and complete-line engineering packages.
For overseas buyers and distributors, the value of the Oiltech range lies in its combination of application coverage, configurable automation, controlled oil consumption and project-oriented engineering support. Whether the requirement is an ultra-thin protective film for premium strip, a wider coating range for corrosion protection, a bar stock solution or an air-spraying system for specialized coatings, the equipment can be evaluated against the actual line process rather than selected as a generic standalone machine.
Discuss your next metal surface treatment project with Suzhou Oiltech Electrostatic Technology Co., Ltd. Share your material type, line configuration, target coating range and operating conditions for a suitable equipment recommendation. Product information and international business contact are available at www.oiltechinc.com.
