Industrial Precision CNC Machining Services

Equipment & Process Coverage

Cold-Rolled Coil Grinding: Capable of processing cold-rolled stainless steel coils with thicknesses ranging from 0.3–3.0 mm. Surface finishes include NO.4, HL, and other decorative textures. High-precision equipment ensures consistent quality suitable for elevator panels, kitchen appliances, and other industries requiring premium surface aesthetics.

Medium & Heavy Plate Grinding: Equipped with industry-leading grinding systems for medium and heavy plates up to 200 mm thick. Supports both hot-rolled and cold-rolled materials while delivering uniform surface refinement. Ideal for petrochemical, heavy equipment, and industrial manufacturing applications.

Coil and Sheet Processing: Coil-to-coil grinding machines handle materials between 0.3–8.0 mm. Sheet grinding equipment supports maximum dimensions of 4200 mm × 12,000 mm, enabling both high-volume production and customized one-off orders.

Materials & Surface Finishes

Material Range: Supports stainless steel grades in the 200, 300, and 400 series, as well as selected specialty alloys, meeting the performance needs of diverse industries.

Surface Styles: Provides multiple finish options, including NO.4, HL, SB, Dupula, and other textures. Custom surface patterns or gloss levels can be produced based on customer samples, balancing both functional and aesthetic requirements.

Technology & Quality Control

Precision Control: Some equipment achieves cutting precision below 0.05 mm, ensuring dimensional accuracy and excellent flatness after grinding—well aligned with the standards of high-end equipment manufacturing.

Quality System: Certified under ISO 9001 and supported by a full-process traceability system. From raw material procurement to final inspection, each step is strictly controlled to ensure consistent and reliable product quality.

Service & Application Industries

One-Stop Manufacturing: Integrated services include grinding, cutting, welding, painting, and more—providing customers with a complete materials-to-finished-product solution that reduces supply chain complexity and cost.

Industry Applications: Serving elevators, medical equipment, new energy, petrochemical, aerospace, and other advanced manufacturing sectors. Openex provides processing services for renowned domestic and international companies such as Hitachi Elevator and leading medical equipment manufacturers.

We possess strong and extensive capabilities in the field of turning machining, supported by advanced equipment, high-precision processing, diverse technologies, and strict quality control. The key strengths are outlined below:

Advanced Equipment

Our facility is equipped with globally leading turning-milling composite machining centers, including heavy-duty lathes from the Wuzhong brand. These machines offer a maximum machining diameter of 12.5 meters, a height of up to 6,000 mm, and can handle workpieces weighing up to 400 tons.

Powered by the Siemens 840dsl CNC system and featuring a dual-turret structure, these machines support constant-speed cutting, automatic indexing, and hydraulic clamping, ensuring high-precision machining of large rotary components.

In addition, our German HESS CNC double-gantry boring & milling center enables five-face machining in a single setup. With a 7-axis, 5-linkage worktable and a maximum machining length of 50 meters, it is ideal for complex components used in nuclear power, gas turbines, and aerospace.

Machining Precision & Range

Our turning operations achieve micron-level precision, with positioning accuracy reaching ±0.005 mm on certain high-end machines. We handle a wide spectrum of workpiece sizes—from multi-meter large components to small, highly precise parts—supporting the machining of inclined surfaces, 2D curves, 3D contours, and other complex geometries.

Multi-Process Integration

Beyond conventional turning, our machines integrate milling, boring, drilling, and tapping capabilities, enabling multi-surface machining in a single clamping operation. This significantly reduces setup errors and enhances both efficiency and consistency.

A notable example is the machining of the 6.7-meter front shield of a slurry balance shield tunneling machine, demonstrating our comprehensive capabilities in heavy-duty equipment manufacturing.

Extensive Industry Applications

Our turning solutions support a wide range of sectors, including energy, pressure vessels, construction machinery, aerospace, medical equipment, and more. We provide customized machining services for domestic and international clients, handling complex components such as large paper machine dryer cylinders, offshore wind installation vessel jacking frame parts, titanium alloy tube sheets, and other precision structures.

Quality Control & Environmental Assurance

Our Jingjiang facility includes a fully enclosed, climate-controlled workshop covering 8,000 m², ensuring stable machining accuracy through optimal temperature and humidity control.

Equipped with advanced inspection instruments such as ZEISS measuring systems, we conduct full-process quality control—from raw materials to finished products—ensuring precise, reliable, and consistent machining results.

We offer strong and comprehensive deep hole drilling capabilities, supported by advanced equipment, mature processes, broad industry applications, and strict quality control. Our strengths are reflected in the following areas:

State-of-the-Art Equipment

We have introduced multiple internationally advanced deep hole drilling machines, including the Italian Inse deep hole drill, the Korean Dayang four-axis multi-hole drilling machine, and the Korean Shinil deep hole drill. These machines deliver high precision and high efficiency. For example:

• The Inse deep hole drill achieves a maximum drilling depth of 1.2 meters with a diameter range of 12–55 mm. It is capable of machining tube sheets up to 1200 mm thick, ensuring stable hole dimensions, excellent surface roughness, and high perpendicularity.
• The Dayang four-axis multi-hole drill enables 3-axis linkage machining and completes multiple processes—milling, boring, drilling, reaming, and tapping—in a single setup. It is widely used for machining large tube sheets, flanges, and other structural parts.

Mature Processing Techniques

Our deep hole drilling team has extensive hands-on experience and can develop customized machining solutions based on different materials and workpiece requirements. When machining highly challenging tube sheets, the team independently improved tool processes, significantly reducing defect rates and improving pass rates. Additionally, operators are trained across multiple machines, ensuring high production efficiency and stable quality.

Extensive Application Fields

Our deep hole drilling services are widely applied in industries such as heat exchangers, petrochemicals, pressure vessels, and shipbuilding. Examples include:

• Processing large quantities of high-precision holes for tube sheets used in large-scale desalination projects, ensuring excellent sealing performance and heat transfer efficiency.
• Providing high-quality drilling services for marine tube sheets, flanges, and other shipbuilding components.

Strict Quality Control

A temperature-controlled machining workshop ensures that deep hole drilling accuracy is not affected by environmental changes. We have also established a comprehensive quality inspection system, using advanced measurement equipment to perform strict inspections on drilled workpieces. All key indicators—including hole diameter, perpendicularity, and surface roughness—are thoroughly verified to meet customer specifications.

At Openex, we combine high quality manufacturing with CMM inspection services to produce excellent goods for our customers. At Present, we have three( one ZEISS MMZ G large bridge CMM, one ZEISS ACCURA II bridge CMM, and one laser tracker Leica AT901) different machines used for coordinate measuring and each machine is handled by fully qualified and skilled members of our team.
More information about our Inspection Capabilities, visit: https://openexmetalfab.com/cmm-inspection