![2015 Top Quality 700C* 54CM Smooth Welding Track Bike Fixed Gear Disc Brake Bicycle Frame ,free shipping|bicycle frame light|frame paintbicycle automatic - AliExpress 2015 Top Quality 700C* 54CM Smooth Welding Track Bike Fixed Gear Disc Brake Bicycle Frame ,free shipping|bicycle frame light|frame paintbicycle automatic - AliExpress](https://ae01.alicdn.com/kf/HTB1o6iPKFXXXXb7XFXXq6xXFXXXh/2015-Top-Quality-700C-54CM-Smooth-Welding-Track-Bike-Fixed-Gear-Disc-Brake-Bicycle-Frame-free.jpg_Q90.jpg_.webp)
2015 Top Quality 700C* 54CM Smooth Welding Track Bike Fixed Gear Disc Brake Bicycle Frame ,free shipping|bicycle frame light|frame paintbicycle automatic - AliExpress
![framebuilding - Is it possible to rebuild a a steel bike frame (to make it lighter) by welding aluminum tubes - Bicycles Stack Exchange framebuilding - Is it possible to rebuild a a steel bike frame (to make it lighter) by welding aluminum tubes - Bicycles Stack Exchange](https://i.stack.imgur.com/rsEmI.jpg)
framebuilding - Is it possible to rebuild a a steel bike frame (to make it lighter) by welding aluminum tubes - Bicycles Stack Exchange
![Broken bicycle frame came for repair im curious if those welds are just bad or is it some kind of weird brazing thing : r/Welding Broken bicycle frame came for repair im curious if those welds are just bad or is it some kind of weird brazing thing : r/Welding](https://preview.redd.it/l93pvrt9onn71.jpg?width=640&crop=smart&auto=webp&s=6e6f08e3cfc16432f691e7ba08a9199b4742e78d)