Aluminum Profile 1.allpy:6a02,6005,6063 2.temper:T5/T6 3.material:1000,6000 series Name:Aluminum alloy tube for bicycle frame1. ... 6. Surface: Painting,polishing drawing,Film(to your order) Advantages1,High quality product2,Reasonable price3,Thoughtful service 1).Precision machining and cutting ... are interested please don't hesitate to contact us! Seamless High Quality Aluminum Tube For Bicycle Frame