Thin Class Piano Music Wire Phosphate JIS G3522 SWP-A
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... marks, pits, and scratches detrimental to the end application. Seams shall not exceed 2 % of the wire diameter or 0.15 mm [0.006 in.], whichever is less. JIS G3522 SWP-A...
Hunan Fushun Metal Co., Ltd.
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