Item 280382.P: Siegmund Square U-Shape 1600x200x200, plasma nitrided, for System 28 welding tables with Ø28 mm bores. Siegmund designs it as a table extension, for vertical setups and as a sturdy connection between two welding tables, with bores on five sides and grid lines every 100 mm. BTH Sales is the exclusive Canadian importer of Siegmund.
Specifications
| Siegmund article | 280382.P (siegmund.com) |
|---|---|
| System | Siegmund System 28 (Ø28 mm bores, 100 mm grid) |
| Length | 1600 mm (62.99 in) |
| Width | 200 mm (7.87 in) |
| Height | 200 mm (7.87 in) |
| Material thickness | 25 mm (0.98 in) |
| Weight | 182 kg (401.24 lb) |
| Finish | Plasma nitrided |
| Bores | Five sides; optional diagonal hole arrangement (Siegmund) |
| Grid lines | 100 mm spacing |
| Fixing to the table | Connecting bolts (Siegmund) |
| Leg mounting holes | On the back (Siegmund: all U-squares from 500 mm length) |
| GTIN | 4251805919165 |
Compatibility
- Fits: Siegmund System 28 welding tables and tooling with Ø28 mm bores on a 100 mm grid. Siegmund System 28 accessories also fit other 28 mm system welding tables with Ø28 mm bores on a 100 mm grid. Compatible tables from other manufacturers are often made from different materials and to different standards, so quality varies by manufacturer, compared with Siegmund's X8.7 tool steel.
- Not compatible: System 16 (Ø16 mm) tables; Siegmund builds each system around one bore size.
- Works with: other Siegmund System 28 clamps, bolts, stops, squares and U-squares on the same table.
- Care & grounding: anti-spatter spray, CleanBasic cleaner, Ground Connection Comfort (S16/S28).
What's included
- 1 x Siegmund Square U-Shape 1600x200x200 Plasma nitrided (280382.P)
Engineering support & demos
Engineering support comes with your purchase: fixture design, layout drawings, CAD and 3D models, site visits and cobot cell planning, handled by Travis Hardcastle at BTH Sales or by Siegmund directly. BTH Sales does not sell cobots; for cobot cells we help with table integration and fixturing (see cobot welding with Siegmund tables). Live demos at our St. Marys showroom are by appointment (book a demo), and we offer video demos if you are outside Ontario. BTH Sales is family-owned, founded in 2001, and has been the exclusive Canadian importer of Siegmund since 2018.
Typical uses
- Extending a welding table (Siegmund).
- Vertical setups (Siegmund).
- A sturdy connection between two welding tables (Siegmund).
- Siegmund describes System 28 as ideal for light to heavy components and designed for maximum clamping forces, multi-ton structures and high distortion forces.

Industries served: Siegmund's published practical examples show its welding tables and tooling in these sectors: Agriculture; Interior; Lighting and electrical engineering; Machine tools and plant construction; Measurement and testing technology; Motorcycle engineering; Revolving door systems; Robotic technology; Stage technology; Stainless steel processing; Steel, sheet metal and metal construction; Textile production; Train Construction; Vehicle construction; Welding technology; Woodworking.
Frequently Asked Questions
Which lengths does Siegmund make in this section?
Siegmund lists the System 28 200x200 U-square in lengths of 100, 200, 500, 600, 800, 1000, 1200, 1400, 1500, 1600, 1800, 2000, 2400, 3000, 4000 mm. Weight rises with length (100x200x200 21 kg; 1400x200x200 162 kg; 4000x200x200 439 kg, Siegmund). This one is 1600 mm long and weighs 182 kg.
How is it fixed to the table?
Siegmund says the U-square is bolted to the table with connecting bolts. Siegmund designs its System 28 Connecting Bolt (280560.N) as a fixed long-term connection between large components such as tables and U-shaped squares, and says it should not be used in elongated holes.
Does it need support as a table extension?
Yes. Siegmund says that when a U-square is used as a table extension exceeding 1,000 mm, it has to be supported by a table leg, and that from a length of 500 mm all U-squares have mounting holes on the back to attach table legs.
Will it fit other 28 mm welding tables?
Yes, if the table has Ø28 mm bores on a 100 mm grid. Check the bore diameter and grid before ordering. Compatible tables from other manufacturers are often made from different materials and to different standards, so quality varies by manufacturer, compared with Siegmund's X8.7 tool steel.
Related parts
- System 28 Square U-Shape 1500x200x200
- System 28 Square U-Shape 1400x200x200
- System 28 Connecting Bolt (280560.N)
- All Siegmund System 28 U-squares
Ships across Canada from 5 Industrial Rd, St. Marys, ON N4X 1G2, or pick up from our warehouse. Most orders ship within 48 hours. Email sales@bthsales.ca or call +1-519-461-1381 with questions or for a freight quote.