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鸿福管业鸿福管业W型 Y 三通规格表公称口径LL1L2DN1DN250501681175175501681353875752031465710050168152251007520316543100100241179621255020519124125752462034312510028421662125125321241791505021121013150752482223215010028423549150125318260651501503572738420010029126424200125325289412001503603005920020043534095鸿福管业鸿福管业B 型 Y 三通规格表公称口径LL1DN1DN2505012510075501251227575167135100501271421007516415410010020016512550133161125751691741251002021841251252401841505013518115075172193150100205202150125240215150150279229200100230245