D28 type welding table with diagnoal holes ,nitriding treatment

D28: Standard tabletop hole diameter of 28mm, the mainstream industry specification, compatible with universal locating pins, clamps, and accessories.

Diagonal holes: Hole positions are arranged along the diagonals of a 100mm × 100mm grid (including the center hole), increasing clamping points compared to a straight grid, and suitable for multi-angle fixing of irregularly shaped parts.

Nitriding treatment: Plasma/gas nitriding is used to infuse nitrogen atoms into the surface layer, forming a nitride layer that improves hardness (typically HV450–850), wear resistance, resistance to welding slag adhesion, and rust prevention, extending service life.

Structural properties: Mostly 5-sided machining (tabletop + 4 sides), supporting X/Y/Z three-dimensional clamping, and allowing for quick fixing with D28 locating pins, support columns, F-clamps, etc. Common materials are high-strength steel or cast iron, offering high rigidity and resistance to thermal deformation.

We understand that standard sizes often fail to meet all creative needs. Therefore, this flagship D28 type welding platform with diagonal holes and nitride treatment is not just a piece of equipment, but a customizable, precision solution. We offer a variety of standard sizes, from a compact 1 meter x 800 cm to a large 4 meter x 2 meter platform that can cover an entire workstation, with load capacities ranging from several tons to tens of tons.

• Flexible clamping: Oblique hole layout + center hole provides higher point density, adapting to multi-angle positioning of complex workpieces and reducing flipping and secondary clamping.
• Lasting precision: Nitriding treatment strengthens the surface, maintaining flatness and hole position accuracy over the long term, and reducing weld slag adhesion and wear.
• Universal compatibility: D28 hole system is compatible with industry- standard accessories, and modular fixtures can be quickly replaced, adapting to multi-variety, small-batch production.
• Durable and robust: High-strength base material + nitrided layer provides resistance to thermal deformation and impact, with a service life of 5–10 years (with normal maintenance).

1. Automotive manufacturing: Precision welding and positioning of car body structures and chassis components.
2. Construction machinery: Clamping of large structural components for excavators, loaders, etc.
3. Sheet metal processing: Flexible welding and fixing of irregularly shaped sheet metal parts.
4. Robotic welding: Used in conjunction with automated equipment to improve welding consistency and efficiency.
5. Aerospace: High-precision clamping and welding of aluminum alloy/stainless steel components.

1. First Use: After unpacking, spray the work surface and all holes with a rust-preventive lubricant (such as WD-40), then wipe with a clean cloth to remove any trace oil film and dust from transportation and storage.
2. Base Surface Protection: Always use the work surface as the positioning reference and avoid performing destructive operations such as direct hammering, grinding, or cutting on it. If you need to strike a workpiece, use a copper hammer or place a wooden block between the workpiece and the work surface.
3. Correct Tightening: Use the provided hex wrench or torque wrench to tighten the clamps. Avoid using extension bars for forceful tightening, as this may damage the threaded holes. When tightening diagonal holes, follow the diagonal sequence and gradually increase the force.
4. Avoid Overloading: Do not exceed the rated load capacity of the workbench. Heavy workpieces should be placed as close as possible to the main support points (such as directly above the base feet or reinforcing ribs).
5. Utilizing the Advantages of the Nitrided Layer: The nitrided surface has extremely high hardness but is susceptible to concentrated point impacts. Handle sharp and heavy objects carefully and avoid scratching the surface directly with hard objects.

As a company deeply rooted in the field of precision tooling for many years, we firmly believe that every millimeter of precision carries the trust of the industry, and the creation of every product embodies a professional commitment.

We don't just manufacture products; we create standards. With over a decade of industry experience and technological innovation, we understand the real needs under demanding working conditions. From meticulous material selection to precision machining, from rigorous heat treatment to final quality inspection, we ensure that every D28/D16 3D welding platform we deliver possesses superior quality, exceptional stability, and long-lasting precision. This is not only about the reliability of the equipment, but also a solid guarantee for your production efficiency and investment value.

Your success is our driving force. We look forward to becoming your trusted manufacturing partner with our experienced technical team and mature and reliable solutions.