![Need to join 2 perforated square metal tubes at at 90 degree angle and limit rotation at that joint. Any ideas for how to connect the two pieces of tubing, aside from Need to join 2 perforated square metal tubes at at 90 degree angle and limit rotation at that joint. Any ideas for how to connect the two pieces of tubing, aside from](http://i.imgur.com/7wZxKoL.jpg)
Need to join 2 perforated square metal tubes at at 90 degree angle and limit rotation at that joint. Any ideas for how to connect the two pieces of tubing, aside from
![Rock West Composites Tube-Rectangle-Fabric-1.01 x 1.13-2.00 x 2.13 x 75-in in the Tubes department at Lowes.com Rock West Composites Tube-Rectangle-Fabric-1.01 x 1.13-2.00 x 2.13 x 75-in in the Tubes department at Lowes.com](https://mobileimages.lowes.com/productimages/4d612171-4044-4d0e-a250-d671c1a651f7/42045625.jpg?size=xl)
Rock West Composites Tube-Rectangle-Fabric-1.01 x 1.13-2.00 x 2.13 x 75-in in the Tubes department at Lowes.com
![16F1224PG 1-3/4" Square X 24FT Length Telespar Telescoping Square Tubing - Perforated - Pre-Galv Finish 16F1224PG 1-3/4" Square X 24FT Length Telespar Telescoping Square Tubing - Perforated - Pre-Galv Finish](https://www.kellyhayes.com/media/catalog/product/i/m/image_1-931548_28.jpg?quality=80&bg-color=255,255,255&fit=bounds&height=265&width=265&canvas=265:265)
16F1224PG 1-3/4" Square X 24FT Length Telespar Telescoping Square Tubing - Perforated - Pre-Galv Finish
![Decoration Square Pipe For 4x4 Square Tubing Shs Perforated Square Tube - Buy Perforated Square Tube,Steel Square Pipe Auto Welding Cut Hole Machine,Square Steel Pipe 70*70 Product on Alibaba.com Decoration Square Pipe For 4x4 Square Tubing Shs Perforated Square Tube - Buy Perforated Square Tube,Steel Square Pipe Auto Welding Cut Hole Machine,Square Steel Pipe 70*70 Product on Alibaba.com](http://sc04.alicdn.com/kf/H2f5a09d4031a4ed5a9054afc467ba100M.jpg)
Decoration Square Pipe For 4x4 Square Tubing Shs Perforated Square Tube - Buy Perforated Square Tube,Steel Square Pipe Auto Welding Cut Hole Machine,Square Steel Pipe 70*70 Product on Alibaba.com
![China Perforated Steel Hollow Section Tube China Hot DIP Galvanized Coating Square Tube manufacturers and suppliers | Minjie China Perforated Steel Hollow Section Tube China Hot DIP Galvanized Coating Square Tube manufacturers and suppliers | Minjie](https://cdn.goodao.net/minjiesteel/powder-coated-square-tube-41.jpg)