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      Ϻųţ޹˾

      English

      Ϻųţ޹˾

      ͨʹõĺͿѡʹõı־Ŀ硶 1ʾֳֶߴ㹻ӦָʾŹرշļͷ򸽼“”

      1 ͨ÷ŵı־Ŀ GB/T12220-1989
      Ŀ ־
      1 ͨDN
      2 ѹPN
      3 ѹϴ
      4 쳧ƻ̱
      5 ļͷ
      6 ܷ⻷棩
      7 ¶ȣ棩
      8 ƴ
      9 ѹ
      10
      12 ׼
      13 ¯¯
      14 ڼϴ
      15 λ
      16 ϴ
      17
      18 Աӡ
      19 
      20

      ͨ÷ŵľ־涨£

      1. 1е 1-4 DZʹõı־ DN≥50mm ķӦڷ DN<50mm ķڷϻDZɲƷ߹涨
      2. 1е 5 6 ֻеij෧ű׼д˹涨ʱDZʹõı־Ӧֱڷ弰
      3. ෧ű׼û涨򡶱 1 7-19 ǰҪѡʹõı־Ҫʱɱڷ
      4. ڼѹڷϵı־ 1Ĺ涨ӦУ  ý ѹ
      5. ˮı־ 2Ĺ涨־ɱڷҲɱڱ
      6. ȫı־ 3Ĺ涨
      2ˮı־GB/T12249-1989
      Ŀ ʹõı־
      1 Ʒͺ
      2 ͨ
      3 ѹ
      4 쳧ƺ̱
      5 ָʾͷ
      6 ߹ѹ
      7 ߹¶
      Ŀ ѡʹõı־
      1
      2 ѹ
      3
      4 ˮ¶
      5 
      3ȫı־
      Ŀ ϵı־
      1 ͨ
      2
      3 쳧ƻ̱
      4 ӲֵijߴѹͬʱӦָļͷ
      Ŀ ϵı־
      1 Ƶ߹¶
      2 ѹ
      3 ݵı׼
      4 쳧Ļ׼ͺ
      5 ϵڻ׼ʵĶ
      6
      7 ߶
      8 ѹٷ

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