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Unread 04-05-2014, 03:47 PM   #2
Vlim
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Federstahldraht II would translate as 'spring steel wire II'. Not much help, I guess.

It should conform to the DIN classs DIN 17223/1, DIN17223.

http://sanyosteel.com/files/DIN/DIN%...3-Part%201.pdf
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