A
Anonymous
Apr 04, 2026
Rating: 5/5
Easy to assemble
Instructions were clear. The allen key provided worked well. Very happy with the purchase.
Description
Aluminum alloy galvanized square tube connectors (20/25/30/40mm) – weld-free 3-way joints for shelving units and base frames
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Aluminum Alloy 6063 |
| Compatible Tube Size | 20mm, 25mm, 30mm, 40mm Square |
| Surface Finish | Anodized Silver |
| Connection Type | Bolted Clamp System |
| Load Capacity | Up to 50kg per joint |
| Package Includes | 10 Connectors, 20 Screws, 1 Allen Key |
| Item Weight | 1.2 kg |
| Color | Silver |
| Installation Method | Tool-Assisted Assembly (No Welding) |
| Application | Shelving, Workbenches, Machine Guards, Frames |
5 reviews
A
Anonymous
Mar 27, 2026
Rating: 3/5
Check your tube size
Make sure you measure your tubes exactly. I thought 20mm was standard but mine were slightly off. Product works as described though.
A
Anonymous
Mar 15, 2026
Rating: 4/5
Great quality, minor packaging issue
The aluminum is solid and looks professional. One bag of screws was loose in the box, but everything was there.
A
Anonymous
Feb 01, 2026
Rating: 5/5
Sturdy and modular
I love that I can reconfigure my rack system without cutting anything. Highly recommend for DIY storage.
A
Anonymous
Jan 24, 2026
Rating: 5/5
Perfect for my workbench
These connectors made building my custom workbench so much easier. No welding needed and they hold tight.
5 FAQ
Q: Can I connect 20mm and 40mm tubes together?
A: Yes, provided you select the specific adapter connector designed for mixed sizes.
Q: Are these compatible with round pipes?
A: No, these are designed specifically for square tubes only.
Q: Do I need to buy extra tools?
A: An Allen key is included, but you may want your own screwdriver for faster assembly.
Q: Will these rust outdoors?
A: They are anodized aluminum, so they resist corrosion, but prolonged outdoor exposure may affect appearance.
Q: What is the maximum weight capacity?
A: Capacity varies by configuration, but each joint supports up to 50kg safely.
![[M2-M20] Stainless Steel Spring Washer](https://www.gosteppe.com/cache/medium/product/16306/legacy-main-ef3d2dba3bde669d48e6cca2.webp)
![[Buy 2 Get 10% Off] Painted Double-Layer Wool Felt Mat for Calligraphy and Painting](https://www.gosteppe.com/cache/small/product/270133/legacy-main-a12ad5b62abb27a9a45afaf4.png)
