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?????GB/T17308<????????漲 |
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1.????(???????)????3-12m
2.???(??)????2-10.5m |
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1.??? ??15mm????????1.5mm/m
2.???>15-30mm????????2.0mm/m
3.???>30mm??????351mm????????3.0mm/m |
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121*16 |
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133*15 |
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121*18 |
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133*16 |
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121*20 |
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133*18 |
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121*22 |
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133*20 |
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121*25 |
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133*22 |
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121*28 |
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133*25 |
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121*30 |
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133*28 |
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127*4.5 |
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133*30 |
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127*5 |
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140*4.5 |
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127*5.5 |
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140*5 |
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127*6 |
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140*5.5 |
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127*7 |
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140*6 |
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???????????0510-88264321??88223334 ???棺0510-88223334 ?????18921237777
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