Thread: Is there a reliable way to tell what type of steel based on diameter?
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Old 05-06-20, 11:27 PM
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mcoate
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Is there a reliable way to tell what type of steel based on diameter?
Road bike from the early 70's.. top tube looks to be about 25.6mm and the seat tube is 28.8mm although my calipers aren't great so could be off by a tenth.
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