Heavy Duty Portable Welding Table
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Wuxi Lemar Machinery Equipments Co., Ltd. is a high-tech enterprise specializing in automated welding equipment and H-beam equipment. Our company has developed a series of professional equipment such as CNC cutting equipment, Beveling equipment, welding equipment, etc.
We have many years of experience in producing welding equipment, and our products are exported to the United States, Europe, and the Middle East.Our 3D welding platform has higher precision, smooth inner holes without burrs, and special nitriding treatment makes welding slag easier to clean.
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Product materials
| Comparison Between Cast Iron and Q355 | ||
| Aspect | Cast Iron | Q355 (Structural Steel) |
| Material Category |
Iron-carbon alloy with high carbon content (2-4%), produced by casting. |
Low-alloy high-strength structural steel (GB/T 1591-2018), produced by rolling/forging. |
| Common Types | Gray Iron, Ductile Iron. | Replaces the old grade Q345. |
| Key Composition | High carbon (2-4%), high silicon (1-3%), low manganese (0.1-1%). |
Low carbon (≤0.24%), low silicon (≤0.55%), manganese (1.0-1.6%), with microalloys (Nb, V, Ti). |
| Mechanical Properties | - Tensile Strength: 120-400 MPa (low) | - Tensile Strength: ≥355 MPa (actual: 470-630 MPa) |
| - Brittle, low toughness | - High toughness, impact resistance | |
| - High hardness (HB 150-300) | - Moderate hardness (HB 130-180) | |
| - Poor weldability. | - Excellent weldability. | |
| Manufacturing Process |
Casting (molten metal poured into molds). Ideal for complex shapes. |
Hot/cold rolling, forging. Easy to cut, weld, and machine. |
| Applications |
Engine blocks, machine tool bases, pipes, cookware (e.g., cast iron pans). |
Structural frameworks (buildings, bridges), ships, pressure vessels, machinery. |
| Advantages | Cost-effective, wear-resistant, good vibration damping. |
High strength-to-weight ratio, ductile, suitable for dynamic loads. |
| Limitations | Brittle, difficult to machine post-casting. | Requires corrosion protection in harsh environments. |
product key technologies
Aperture system:
Standard D28 series (28mm aperture, ±0.02mm accuracy)
Strengthened D16 series (16mm high density hole array)
Surface: high strength alloy steel (such as S355J2) or ductile iron (QT500-7)
Frame: square tube steel structure (specifications above 80x80x4mm)
Load capacity: usually designed load 500kg-2 tons, military grade products can reach 5 tons
Common problems and solutions
| Issue | Cause | Solution |
| Tabletop Deformation | Local overheating or exceeding weight limit |
Use thickened tabletops (≥20mm steel plate) or install water-cooling systems |
| Positioning Error | Fixture wear or hole misalignment | Perform laser calibration and replace worn fixtures |
| Corrosion | Damaged protective layer or humid environment |
Apply high-temperature-resistant anti-rust paint; maintain dry environment |
| Poor Grounding | Oxidized or loose contact points |
Regularly clean grounding terminals; use copper wiring connections |
Product application
Site installation engineering: welding of oil pipelines and bridge steel structures
Emergency maintenance: on-site maintenance of ships/engineering machinery
Mobile manufacturing: film and television props/stage truss production
Heavy-duty portable welding workbench is a professional welding platform with high strength bearing capacity and mobile convenience, mainly serving the welding scenes that need to change the working site frequently or have limited space.
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