Reinforced GF-N T profile
Reinforced Green Frame Ø 28 mm tube: about 1.5 times the bending resistance of the standard GF-N, assembled with the same external connectors. 0.79 kg/m, 4000 mm bar or cut to length.
Green Frame · GF-N Ø 28 profiles
Reinforced GF-N T profile: stiffer Ø 28 mm tube for loaded cross members
Same diameter as the GF-N tube, reinforced inner wall: its bending resistance is about 1.5 times higher. You use it in place of the standard tube where a cross member or upright works harder, without changing external connectors or dimensions. The end can be threaded M8, to screw in adjustable feet.
Why choose it
Stiffer, same overall size
28 mm outside diameter: you replace a standard tube without changing the design of the structure.
Same external connectors
It connects with GF-N external connectors, like the standard tube.
Feet in the end
The end can be threaded M8: you screw in an adjustable foot without a bush.
Targeted reinforcement
You fit it only where needed and keep the lighter standard tube in the rest of the structure.
Choose it if…
- A cross member or upright bends too much, but you want to stay within the 28 diameter.
- You want to screw M8 feet directly into the end of the tube.
- A moderate reinforcement is enough, about 1.5 times the standard tube.
Choose another solution if…
- You need much more rigidity on the cross member (about 10 times): GF-N W profile →
- The joint takes continuous impacts: GF-N Hard profile →
- The tube must also accept flush internal connectors: GF-N profile →
Not sure which one to choose? Use the Green Frame quick guide →
Application example
The T is used where a standard tube would work at its limit:
- Shelf cross members on the most heavily loaded workstations and racks
- Uprights with adjustable feet screwed into the end
- Trolley frames that must deflect less
What you assemble it with
With the T use GF-N external connectors: they are the same as for the standard tube.
When to use it
The numbers to decide with:
Over a 1000 mm span
It takes 289 N at mid-span with 5 mm of deflection, against 195 N for the standard tube.
Over a 500 mm span
It takes 1155 N at mid-span with 5 mm of deflection, against 779 N for the standard tube.
In place of the standard tube
Same diameter and same external connectors: you only change the profile code.
Beyond these values, move to the GF-N W fitted upright or to the GF-G series.
The LeanProducts service
From the drawing to the finished structure, with a single point of contact:
Design and load calculation
We start from your sketch or dimensions: we choose profiles and connectors and check spans, joints and loads.
Cut to length
We cut the profiles in our workshop to the project lengths, ready to assemble.
Kit or assembled structure
You receive the kit with the cut parts and the component list, or the structure already assembled.
Spare parts and modifications
When the process changes, we supply components and new cuts to modify or extend the structure.
Send us a sketch, a photo or the overall dimensions: we reply with codes, quantities and cutting lengths.
Technical data
| Parameter | Value |
|---|---|
| Part number | GFF-017 |
| Series | GF-N, Ø 28 mm tube |
| Diameter | Ø 28 mm |
| Length | 4000 mm bar or cut to length |
| Weight | 0,79 kg/m |
| Material and finish | Anodised extruded aluminium |
| Moment of inertia | Ix = Iy = 1.72 × 10⁴ mm⁴ |
| Section modulus | Zx = Zy = 1.23 × 10³ mm³ |
| Bending resistance | About 1.5 times the GF-N profile |
| Load at mid-span, 500 mm span | 1155 N (about 118 kg) with deflection 5/1000 |
| Load at mid-span, 1000 mm span | 289 N (about 29 kg) with deflection 5/1000 |
| End | Threadable M8, 24 mm deep |
| Suitable connectors | GF-N external connectors |
| End caps | Inner end cap GFA-410, outer end cap GFA-401 |
Concentrated loads at the centre of a tube fixed at both ends with connectors, span measured between the uprights: in a structure, joints and supports also count, and we carry out the full check on the project.
GF-N external 90° connectorExternal 90° connector
Inner end cap for GF-N T profileInner end cap for T profile
GF-N outer end capOuter end cap
GF-N profileStandard GF-N profile
GF-N W profileGF-N W profile, stifferNot sure which profile to use?
Send us a sketch of the structure and the weight it must carry: we will tell you the profiles, connectors and cutting lengths.