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序號
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直徑Φ×長度L （mm）
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2DF-200
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14×200
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2DF-250
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16×250
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2DF-300
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16×300
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2DF-350
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16×350
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2DF-400
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18×400
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2DF-450
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18×450
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2DF-500
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20×500
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2DF-550
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20×550
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2DF-600
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20×600
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2DF-650
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20×650
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2DF-700
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22×700
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2DF-800
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22×800
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2DF-900
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22×900
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2DF-1000
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25×1000
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2DF-1200
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25×1200
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