출처: http://www.equusbicycle.com/bike/reynolds/Reynolds-tubing-sizes.jpg
Reynolds 853
Reynolds 753 => 1650 망간 몰리, 회색빛.
Reynolds 631 => Six three one is stronger than 531 by 10%. 853 is a heat-treated version.
Reynolds 531
the 853 is more rigid than the 631. 631 is the air hardening version of 531.
http://www.reynoldsusa.com/english.html
Vitus 980 => 1507
http://www.columbustubi.com/eng/4_4_1.htm
http://astrocycloalpine.weebly.com/columbus-steel-tubesets.html
http://www.equusbicycle.com/bike/columbus/columbuschart.htm
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