4000×2000×200mm High Quality Flexible Welding Table D28 is a high - end modular tooling platform specifically designed for welding, assembly, and inspection of large workpieces. It adopts the D28 standard hole - system, featuring ultra - high load - bearing capacity, high - precision positioning, and extreme flexibility. It is suitable for precision welding and assembly in fields such as heavy machinery, shipbuilding, energy equipment, and aerospace.
Core parameters
Item Specification
Workbench size 4000mm (length) × 2000mm (width) × 200mm (height)
Hole system standard D28 (28mm diameter standard positioning hole)
Material High-strength alloy cast iron/special steel (optional quenching treatment)
Load-bearing capacity 20 - 30 tons (depending on the structural design)
Flatness ≤0.05mm/m (precision lapping)
Hole pitch accuracy ±0.02mm (ensuring high repeat positioning)
Hole spacing 50×50mm or 100×100mm (optional)
| 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. |
D16 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=φ16.065--φ16.149mm.
Hole spacing:L1=50±0.05mm.
Engraving:Graduation line spacing W1=50±0.05mm.
Flatness:0.1/1000mm.
Verticality:0.05/200mm.
Roughness:Ra3.2.
Load-bearing:Standard type: 2T, frame type: 5T.
Hardness:Material body hardness.
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.
TableTypical applications of 4000*2000*200mm High Quality Flexible Welding Table
√Heavy machinery - Welding of structural parts of excavators and cranes
√Shipbuilding - Welding and assembly of hull sections
√Energy equipment - Welding of wind power towers and nuclear power pressure vessels
√Rail transit - Positioning of large components of high - speed rail/subway car bodies
√Aerospace - Assembly of aircraft skeletons and rocket fuel tanks
Core Advantages and Features
1. Extra-large Workbench Surface, Suitable for Heavy-duty Welding
The super-large workbench surface of 4000×2000mm can fix multiple large workpieces simultaneously (such as ship sections, wind power towers, and construction machinery structural parts).
The 200mm thick workbench body with an internal honeycomb - type stiffener structure ensures high rigidity and strong anti - deformation ability.
2. D28 High - precision Hole System
28mm standard positioning holes are compatible with various modular fixtures, support columns, and quick - acting clamps.
The hole walls can be quenched and hardened (optional) to improve wear resistance and extend the service life.
It supports 3D positioning and can be adjusted in the X/Y/Z three directions to meet complex welding requirements.
3. Flexible and Modular Design
Expandable and splicable: Multiple units can be used in combination to form a larger processing area (such as an 8m×4m extra - large platform).
Quick change - over: Through
Flexible Welding Tables' standard fixture system, the tooling adjustment can be completed within 5 minutes to adapt to multi - variety production.
4. High Stability and Shock Resistance
Made of heavy - duty cast iron/alloy steel, it has good shock absorption performance and reduces welding deformation.
Optional shock - proof feet are suitable for high - precision assembly scenarios.
For more details or custmized welding table ,pls feel free to contact us ,thanks!
√ 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.
How to use a Flexible Welding Table for better and quicker woking?
1.Consider characteristics of the workpiece: select the appropriate platform model according to the size, shape and weight of the workpiece. For example, D16 series platforms are often used for sheet metal and small steel structures, while D28 series platforms are often used for large steel structures and heavy machinery industry.
2.Selecting Platform Structure: Flexible welding platforms are categorized into three main series based on their structural types: hole system combination fixtures, slot system combination fixtures, and combination punches. The slot system combination fixtures are available in three sizes: 16mm, 12mm, and 8mm, corresponding to large, medium, and small combination fixtures, respectively. Choose the appropriate structural type based on your specific requirements.
3.Select the right material and manufacturing process: Choose a platform produced by a regular manufacturer to ensure that the material meets national standards (such as cast iron HT200-300) and that the manufacturing process is excellent. Pay attention to checking the hardness of the working surface of the platform, which should be HB170-240 and has been properly heat-treated to ensure its stability and durability.
4.Consider the platform's scalability and adaptability: Evaluate whether the platform can be extended by adding support components (such as U-shaped square boxes, L-shaped square boxes, or angle iron supports) to accommodate larger workpieces. Assess whether the platform can be easily assembled and combined according to the shape and size of the workpiece.
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Shipping & Support
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4000*2000*200mm High Quality Flexible Welding Table is an ideal solution for welding and assembly of large and heavy workpieces, especially suitable for industrial scenarios with strict requirements for precision, rigidity, and production efficiency. Its modular design can significantly reduce the tooling cost and enhance the flexibility of automated welding, making it one of the core equipment in modern intelligent factories.
If special customization is required (such as non-standard hole spacing, material upgrade, or automation integration), specific requirements can be provided for special design.
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