bicycle fram top tube diametre 25.4*0.9T down tube diametre 28.6*0.9T seat tube diametre 28.6mm* 0.9T

bicycle frame  : 

top tube diametre 25.4*0.9T  

down tube diametre 28.6*0.9T         

seat tube diametre 28.6mm* 0.9T

height of top tube 545mm       

height of down tube : 620mm             

height of seat tube :  525mm

Material : CR-MO 4130

the joint is investment casting (precision casting)

bicycle frame