The cutting table is the foundation of every waterjet machine, supporting the workpiece, containing the water and abrasive, and maintaining dimensional stability under constant exposure to moisture and abrasive slurry. The most common materials are carbon steel, stainless steel, and aluminum, with carbon steel and stainless steel being the dominant choices.

Carbon Steel Tables

Carbon steel is the most widely used material for waterjet cutting tables because of its excellent combination of strength, rigidity, and cost. A typical carbon steel table uses a welded structural frame with a thickness of 6mm to 12mm for the tank walls and heavy-gauge square tubing for the support structure. Carbon steel offers high stiffness, which helps dampen vibration and maintain cutting accuracy during heavy-duty operation. The main drawback is corrosion. Because the table is constantly exposed to water and abrasive slurry, carbon steel requires protective coatings such as epoxy paint, galvanizing, or regular maintenance to prevent rust. Many manufacturers use a combination of carbon steel for the structural frame with stainless steel components in high-wear areas.

Stainless Steel Tables

Stainless steel tables, typically grade 304 or 316L, are chosen when corrosion resistance is the priority. Grade 304 offers good resistance to fresh water and mild chemicals, while grade 316L with molybdenum content provides superior resistance to chlorides and salt water, making it suitable for cutting corrosive materials or operating in coastal environments. Stainless steel tables are also preferred for food-grade and medical applications where hygiene and cleanability are essential. The trade-off is cost: stainless steel tables typically cost 30% to 50% more than carbon steel equivalents. Stainless steel also has slightly lower stiffness than carbon steel, though this is rarely a limiting factor in waterjet applications.

Aluminum and Composite Options

Some manufacturers offer aluminum support grids or composite slats. Aluminum is lightweight and corrosion-resistant but softer than steel, so it is used mainly for the sacrificial support slats that hold the workpiece rather than for the main tank structure. Composite or plastic slats are also available for applications where metal contamination must be avoided.

Support Slats and Sacrificial Grids

The workpiece itself does not rest directly on the tank bottom. It sits on a grid of support slats, typically spaced 25mm to 100mm apart. These slats are consumable items and are replaced periodically as the waterjet cuts into them. Common slat materials include mild steel, stainless steel, and aluminum.

Winwin offers a complete range of waterjet cutting equipment, high-pressure pumps, and genuine waterjet accessories, including cutting tables with carbon steel, stainless steel, and aluminum support grid options. Every machine is fully customizable to your materials, production environment, and corrosion-resistance requirements. Winwin provides comprehensive after-sales service for products shipped worldwide, including professional installation, calibration, operator training, spare parts supply, remote technical support, and full lifecycle service, ensuring your equipment performs reliably wherever you are.