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DN125 DN150 DN200 DN250 DN300 DN350 DN400 DN450
DN500 DN600 DN700 DN800 DN900 DN1000
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淇濇韩鏈ㄦ墭绠″緫:
DN10 DN15 DN20 DN25 DN32 DN40 DN50 DN65 DN80 DN100
DN125 DN150 DN200 DN250 DN300 DN350 DN400 DN450
DN500 DN600 DN700 DN800 DN900 DN1000