![Perforated Round Tube, Perforated Square Tube, Perforated Rectangular Tube | Tube Pierce Manufacturing Perforated Round Tube, Perforated Square Tube, Perforated Rectangular Tube | Tube Pierce Manufacturing](https://www.tubepiercemfg.com/wp-content/uploads/2019/02/capa-custom-perf-tubes-1.jpg)
Perforated Round Tube, Perforated Square Tube, Perforated Rectangular Tube | Tube Pierce Manufacturing
![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
![Hillman 1-in x 6-ft Plain Hot Rolled Steel Weldable Square Tube in the Tubes department at Lowes.com Hillman 1-in x 6-ft Plain Hot Rolled Steel Weldable Square Tube in the Tubes department at Lowes.com](https://mobileimages.lowes.com/productimages/456a71d2-8e73-4213-b79b-bdf2b126442f/08970616.jpg?size=xl)