HT250 Welding Table 3D Flexible Welding Worktable with Fixture is a modular welding platform made of high-strength gray cast iron (HT250). Combined with the 3D flexible fixture system, it is specifically designed for precision welding, assembly, and inspection. Its core features include high rigidity, high shock absorption, and modular expansion capabilities, making it suitable for high-precision industrial fields such as aerospace, automotive manufacturing, and mold processing.
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. |

1-side welding tables 5-side welding tables
D28 3D Welding Table
Material:a. HT300 casting, b. Q355 steel plate welding, c. High hardness steel plate welding, d. Stainless steel plate welding.
Aperture:A=φ28.065--φ28.149mm.
Hole spacing:L1=100±0.05mm.
Engraving:Graduation line spacing W1=100±0.05mm.
Flatness:0.1/1000mm.
Verticality:0.1/200mm.
Roughness:Ra3.2.
Load-bearing:Standard type: 2T, frame type: 5T.
Hardness:Material body hardness.Nitriding layer hardness::HV450-HV630
HT250 Welding Table 3D Flexible Welding Worktable with Fixture
1 High-precision Welding
• Aerospace: Welding of aircraft structural components and engine mounts.
• Automotive Manufacturing: Welding of white body and chassis (repeat positioning accuracy ±0.1mm).
• Energy Equipment: Welding of nuclear power pipelines and wind power bearing pedestals.
2 Tooling Fixtures and Inspection
• Modular Fixture Datum Platform: Compatible with systems such as MISUMI and CARVER.
• Coordinate Measuring Machine (CMM): Provide a stable measurement reference.
3 Education and R & D
• Welding Training: Modular design for easy teaching demonstration.
• Prototype Development: Quickly verify the workpiece assembly process.

1 HT250 Gray Cast Iron Tabletop
• Material Advantages:
High Damping: The graphite flake structure absorbs vibrations and reduces welding deformation.
High Rigidity: The bending strength is ≥250MPa, suitable for heavy - duty workpieces.
Wear Resistance: Pearlite matrix + graphite self - lubrication extends the service life.
• Surface Treatment:
Precision Grinding: Flatness ≤0.1mm/m.
Optional Nitriding/Hard Chrome Plating: Improves surface hardness (HRC≥50).
2 3D Flexible Fixture System
• D28 Standard Hole System (28mm hole diameter, 50mm/100mm grid):
Compatible with international fixture systems such as EROWA, 3R, and Lang.
Repeat positioning accuracy of ±0.02mm.
• Three - Dimensional Adjustability (X/Y/Z + Rotation):
Manual/Pneumatic fine - tuning mechanism (accuracy ±0.05mm).
Optional 360° rotation module.
3 Modular Expansion
• Quick Mold Change (QMC): Fixture change time < 1 minute.
• Automation Integration: Supports docking with robotic welding arms and CNC machining centers.
• Multifunctional Accessories: Vacuum suction cups, coolant diversion channels, protective covers, etc.
Give you more choices---Our related product link for you!
√ 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.
√ On the basis of continuously absorbing advanced technologies and processes domestic and abroad,our products are widely used in pressure vessels, petrochemicals, power stations, heavy machinery, ships, steel structure buildings and other industries.Most of the products have reached advanced international levels.
√ Lemar Machinery has won the praise of users with the corporate spirit of "motivational and enterprising, honest and trustworthy", and is wi ling to work hand in hand with friends from all walks of life to realize its vision.
Q: What's the lead time for custom configurations?
A: Standard units ship in 3-5 business days. Custom builds require 2-3 weeks for production.
Q: Do you provide on-site installation?
A: Yes, our certified engineers offer global installation and calibration services.
Q: What warranty coverage is included?
A: 1-year limited warranty on mechanical components.
Shipping & Support
✓ FOB/CIF terms available
✓ DDU/DDP shipping to 50+ countries
✓ Trade assurance through PICC/Country bank
Enhance Your Welding Capabilities With Our HT250 Welding Table 3D Flexible Welding Worktable with Fixture!