In metal processing, a protective or lubricating oil film must do more than reach the strip surface. It needs to suit the material, production line and downstream operation while supporting consistent product quality and responsible lubricant use. Suzhou Oiltech Electrostatic Technology Co., Ltd. develops oil application equipment for these requirements, with solutions for metal strip and bar stock processing across a range of production conditions.
With more than 20 years of experience in electrostatic oil application, Oiltech supplies complete systems for tinplate, galvanized and chrome-plated sheet, aluminum and aluminum alloy strip, as well as bar stock. The product range includes vertical and horizontal electrostatic oil applicators and horizontal oil-spraying machines. This breadth gives overseas buyers and engineering contractors options for matching application technology to material, coating needs and line layout.
Purposeful Oil Application for Metal Surfaces
Oil application supports two important functions in metal production. A uniform protective film helps shield sheet and strip from air and moisture, reducing the risk of corrosion during storage and handling. A controlled lubricating layer can also help limit surface scratches during rolling and slitting, while supporting coil stacking, vacuum-cup handling and accurate cutting.
These outcomes depend on choosing an appropriate application method and coating range. Oiltech’s vertical electrostatic applicators are designed for thin, precise films, while horizontal models serve broader coating requirements, including corrosion protection. The company also offers an air-assisted spraying machine for applications where high-pressure atomization is appropriate. Equipment selection can therefore be considered in relation to the actual process, rather than treating every line as the same application.
Vertical Systems for Thin, Controlled Films
The LSA series vertical electrostatic oil applicator uses electrostatic adsorption and offers two standard coating-weight ranges for different line duties. The 2–12.5 mg/m² range is intended for finishing applications on tinplate, chrome-plated sheet and aluminum strip. The 20–100 mg/m² range is specified for tinplate base material, tinplate recoiling and tin pretreatment lines.
Oiltech states that its self-developed control algorithm enables independent, precise coating-weight adjustment. A proprietary ionization system and constant-tension control technology are designed to reduce maintenance workload and production interruptions. The company also highlights stable oil-film output as a way to help avoid surface craters and reduce quality-related complaints. A combined-unit design can support both stated coating ranges, offering flexibility for producers managing multiple grades or duties.
The LSA series has experience on high-end, high-speed production lines. Most core components are imported, and the company maintains spare-parts inventory while offering localized alternatives to help address supply-chain interruption risks. The supplied product photographs show enclosed teal industrial equipment with inspection windows, motors, connected piping and adjacent control or service equipment on a factory floor. The images provide a view of the physical installation, but do not identify a specific model or confirm technical performance.
Horizontal Applicators for Versatile Line Integration
Oiltech’s horizontal electrostatic range includes HEOD, WAX and WSA models. The HEOD is positioned as a cost-effective option, with a compact structure intended to make maintenance and servicing easier. It uses a Siemens S7-1200 automatic control system and an independently controllable high-voltage power supply. Core components are imported, while major components use leading domestic brands. The system can be customized to customer-site requirements.
HEOD and the other horizontal models address coating duties including canstock tinplate base material and aluminum strip, as well as cold-rolled sheet, temper rolling, recoiling and hot-dip galvanizing applications. The supplied specifications describe ranges of 1.5–300 mg/m² for canstock tinplate base material and aluminum strip, and 100–3,500 mg/m² for several other line applications. Buyers should confirm the applicable range and configuration against their own process conditions.
The WAX series is tailored to mainstream high-end international production lines. It uses a Siemens S7-1500 control system with distributed I/O and a high-voltage power supply model shared with leading international applicators, enabling spare-part interchangeability. Main system functions have active-standby redundancy, with one unit operating and another available as backup. Optional functions include an adjustable-width blade beam, edge tracking, outlet oil-mist purification and hot-air heating. WAX also supports dry-oil coating and is described as capable of meeting product certification requirements of BMW, Audi and Apple; this is a capability statement, not a certification of the applicator itself.
The WSA is the high-end horizontal model. Buyers can choose an in-house or imported high-voltage power supply, and the system includes functional redundancy and a Siemens S7-1500 control system. Its configuration emphasizes operational reliability and real-time monitoring, while offering a moderate-price positioning for users with demanding requirements.
Spraying and Bar Stock Applications
For processes suited to air atomization, the HPOD 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, where the atomized droplets are directed toward moving metal strip and deposited on its surface. The HPOD is compatible with water-based conductive coatings, uses a Siemens S7-1200 control system, and includes an explosion-proof design for processing flammable coatings. A purification system is provided to help prevent overflow pollution.
The BC series is designed specifically for bar stock oil application. It combines a Siemens S7-1200 automatic control system with an independently controllable high-voltage power supply. Its ultra-low oil application rate is intended to reduce lubricant consumption while improving product quality for demanding customers. For buyers processing bars rather than coil strip, this dedicated design offers a distinct option within Oiltech’s wider equipment portfolio.
Manufacturing, Integration and Project Support
Oiltech is based in Suzhou, in China’s Yangtze River Delta, and reports a 10,000 m² standardized production workshop on company-owned land. Its manufacturing organization includes a sheet-metal workshop and specialized workshops for complete oil applicators, oil-mist purification equipment and intelligent control displays. More than 30 processing machines and over 60 inspection instruments support production and quality checks, including incoming-material, in-process and finished-product inspection.
The company has more than 80 employees, including 11 mechanical, electrical and electronic engineers in its metallurgical engineering team, five dedicated after-sales engineers and five quality inspectors. Engineering services include site surveys, process-solution customization and commissioning. After-sales support covers overseas and domestic project commissioning, troubleshooting and scheduled inspections, with remote technical support also available.
Oiltech reports ISO 9001, ISO 45001 and ISO 14001 management system certifications. Its equipment has been supplied to metal producers in China and overseas, including projects involving Tata, NLMK, Severstal, Tosyali Toyo, TATMETAL and ISL. The company also works with engineering contractors and states that its equipment can integrate with production lines from SMS, Tenova and Danieli. These project references and integration experience are relevant starting points for technical discussions; each proposed installation still requires project-specific review.
Discuss Your Line Requirements
As metal producers balance surface quality, corrosion protection, lubricant use and line availability, oil application equipment must be selected around real operating conditions. Material type, line speed, target coating weight, available space, control requirements and maintenance preferences all affect the configuration. Oiltech’s range covers electrostatic application for strip, air-assisted spraying and dedicated bar stock oiling, with options intended for both cost-conscious and high-end line requirements.
For overseas buyers, distributors and project contractors evaluating a new installation or replacement, Suzhou Oiltech can discuss application requirements and equipment configuration. Share your material, process and line details to begin a technical conversation. Visit www.oiltechinc.com to learn more about the company and its metal-processing oil application solutions.
