Large structural frames
Hold long profiles and wide frames square while weld sequence and heat input are controlled.
D28 modular hole system
D28 welding tablesfor heavy fabrication
Ø28 mm holes on a 100 mm grid. Large fabrications, thick plate and heavy welded structures.
Why D28
High clamping force for large structures
The heaviest of the three, taking larger clamps and pins. Chosen for large frames, bases and structures where holding force and rigidity matter more than fine positioning.
Choose D28 when the fixture must resist the movement of long profiles, thick plate and heavy welded assemblies. Larger pins and clamps provide a more robust setup for structural work, machine bases and production cells.
- Hole diameter: Ø28 mm
- Standard grid: 100 mm
- Steel or nitrided steel platform options
- Tooling matched to the Ø28 mm bore
D28 project profile
The workpiece and clamping load decide whether this is the right system.
- Typical work
- Large fabrications, thick plate and heavy welded structures
- Fixture plan
- Heavy clamps, tall angle squares, reinforced stops and large quick-locking pins matched to the 28 mm bore.
- Choose another
- Choose D16 for small precision parts or D22 when the shop needs a lighter general-purpose system for mixed medium-size jobs.
- Quote input
- Drawing, size, weight, flatness, quantity and destination
Typical D28 work
Where this hole system earns its place
Examples are a selection guide. Final table construction and support are confirmed from the approved workpiece drawing.
Machine bases
Fixture thick plates, ribs and heavy sections where accessory stiffness and holding force are critical.
Robotic welding cells
Build repeatable production fixtures around strong datums, tall squares and high-capacity clamps.
Quote checklist
Configure the D28 3D welding table around the workpiece
This is a made-to-order modular welding fixture table, not one fixed stock model. The approved drawing sets the platform size, working height, surface, accuracy and matched accessory kit.
Use the checklist to give a welding table manufacturer enough information to review the configuration before quoting.
Load and support points
Provide the workpiece weight, footprint and loading method so the platform body and support frame can be reviewed.
Weld access and sequence
Mark crane, robot, torch and operator access so tall squares and heavy clamps do not block the joints.
Accuracy requirement
State the required flatness grade and whether the table will also serve as an inspection or assembly reference.
Matched D28 tooling
List heavy clamps, reinforced stops, tall angle squares and 28 mm pins needed for the initial fixture.
Platform finish
Use the same hole system on either surface
Select the platform construction and treatment from production volume, wear and maintenance requirements.
Fabricated steel platform
Steel 3D Welding Table
A welded steel 3D platform with precision-machined top and side faces for large fixtures, frames and repeat production.
View configurations
Nitrided steel surface
Nitrided Steel 3D Welding Table
A steel 3D welding platform with a nitrided working surface for modular positioning, clamping and repeatable fabrication setups.
View configurationsHole systems
D16, D22 or D28: pick the grid around the work
The hole system sets how much holding force the table gives you and how fine the positioning is. It is the first decision, because every clamp, pin and stop has to match it.
D16 welding table system
- Hole diameter
- Ø16 mm
- Grid
- 50 mm
- Best for
- Light to medium parts, jigs, frames and detail work
D22 welding table system
- Hole diameter
- Ø22 mm
- Grid
- 100 mm
- Best for
- General fabrication where one table covers several job sizes
D28 welding table system
- Hole diameter
- Ø28 mm
- Grid
- 100 mm
- Best for
- Large fabrications, thick plate and heavy welded structures
What actually changes between the series
Larger holes take larger pins and clamps, so a D28 table holds heavy structures more securely. Smaller holes let you place stops closer together, which helps small parts and tight geometry. The machined grid, hole spacing and flatness are set at the same time, so tell us the workpiece and we will match the system to it.
- Grid spacing confirmed against the drawing
- Plain bore matched to the selected system
- Flatness from 0.1 mm/m² down to 0.02 mm/m²
Questions
D28 welding table questions
If your question is not here, send it over — practical answers are usually faster than a specification sheet.
- What work is a D28 welding table designed for?
- D28 is intended for large frames, thick plate, machine bases and other heavy assemblies that need larger pins, clamps and rigid locating elements.
- What is the standard D28 grid spacing?
- BECO D28 tables use 28 mm holes on a 100 mm grid unless the approved customer drawing specifies a custom arrangement.
- How do I size a D28 table?
- Provide the maximum workpiece envelope, weight, support points, loading method and required access around the welds. We use those details to review table size, height, support and fixture quantities.
- Can a D28 welding table have a nitrided surface?
- Yes. D28 platforms can be supplied as machined steel or with plasma nitriding. Nitriding is most useful on high-use production tables where heavy clamps and pins repeatedly contact the working faces and hole grid.
Have a workpiece in mind?