The HJ-4 is a black metal joint set that allows you to create a three-pipe intersection on two axes. This joint set is the best option when you need to create separations without weakening the rigidity of your structure. It will give you the option of making a pipe grid, similar to welded wire mesh, but with fewer tubes than it would require with HJ-7 connectors. This HJ-4 will also be ideal when you need to create an intersection between two perpendicular pipes, but you don't want to weaken the strength of a long pipe or long pipe series. It allows you to secure stem-mount casters easily at the bottom of your structure.
This joint set is designed with 12 striations for a better grip on the plastic coating of the 28 mm pipes. It also includes 6 additional pre-drilled reinforcement holes to ensure extra strength to your structure. By adding a self-drilling screw F-A85/8, you will solidify the connector joints positioned on a corner where there is a higher risk of impact.
See the installation steps tab to view how to assemble this connector.
Antistatic Version (ESD):
An electric conductivity version if offered if you wish to build antistatic structures: HJ-4NP
Want to reuse parts of your old system?
The HJ-4 Flexpipe joint set is compatible with many other pipe and connector systems. Check the technical information tab to know which systems are compatible and none-compatible with our parts.
|Needed parts||2x H-4 + 2x M6-25B + 2x M6-N|
|Length inches||5 1/8 in (130 mm)|
|Width inches||1 5/16 in (33 mm)|
|External height inches||3 1/4 in (83mm)|
|External width inches||5 1/8 in (130mm)|
|External depth inches||1 5/16 in (33mm)|
|Steel thickness inches||1/8 in (2.5 mm)|
|Unit weight pounds||0.506 lbs (0.230 kg)|
|Compatible joint systems||Creform, NIS, C Tek Lean Solutions, Trilogiq (28 mm)|
|None compatible joint systems||Fastube, Trilogiq (28.6 mm)|
|Compatible pipe systems||Creform, Fastube, Trilogiq (28 mm), NIS (28 mm), C Tek Lean Solutions (28 mm)|
|None compatible pipe systems||Trilogiq (28.6 mm)|
|Frequency of use||High|
|Electric conductivity (ESD)||No|
|Material||Hot rolled steel (SPHC)|
|Steel hardness (HRB)||68-75 HRB|
|System operational temperature||-148°F to 572°F (-100°C to 300°C)|
|Steel treatment||Black cathodic electrodeposition (Ecoating)|
|Manufacturing technique||Stamping and deburring|
|Striations for grip||12 striation grip lines|
|Positioning guide||8 positioning guide lines|
|Additional reinforcement hole||6 reinforcement holes|
- Ensure you have the following parts:
- 2x H-4
- 2x M6-25B bolts
- 2x M6-N nuts
- 3x 28mm pipes of your choice
- 1x T-HANDLE 5mm hex key
- Take the two H-4 connectors and group them around the first pipe.
- Fix the connectors by placing an M6-25B bolt with an M6-N nut in the corresponding opening and loosely tighten. Repeat with the remaining M6-25B bolt and M6-N nut. Make sure to place the bolts on the most accessible side.
- Insert the second and the third pipes within the openings of the HJ-4, and between the first and the second positioning guidelines.
- Tighten the M6-25B bolts and the M6-N nuts until the HJ-4 is firmly attached to the three pipes. A force between 12-14 Nm is recommended for this step.
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