Contact: Mr. Houson Hou
QQ：332416379
Mobile: 0086-13590912876
Email: swimmingpoolspa@foxmail.com
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- Tel: 0086-13590912876
- Fax: 0086-13590912876
侯松林Manufacturer,exporter,supplier,factory of spa,hot tub,jacuzzi,swim spa,massage bathtub,swimming fitting,part,accessory,pool pump,sand filter,underwater light,LED light,filtration unit,competition equipment,disinfecting equipment,electric heater,pool cleaner.
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Contact: Mr. Houson Hou, QQ：332416379, MSN: chinahottub@hotmail.com, Email: swimmingpoolspa@foxmail.com, Mobile:0086-13590912876。
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管道DN15,DN20,DN25,DN32,DN40,DN50,DN65,DN80,DN100,DN125,DN150,DN200
4分：DN15
6分：DN20
1寸：DN25
1.2寸：DN32
1.5寸：DN40
2寸：DN50
2.5寸：DN65
3寸：DN80
4寸：DN100
5寸：DN125
6寸：DN150
8寸：DN200
3分管就是公称通径为DN10的管子 4分管就是公称通径为DN15的管子 6分管就是公称通径为DN20的管子
比较专业的回答是：4分是英制管道直径长度的叫法，即1/2英寸．等于公制的15mm.
1英寸等于8分.合公制的25.4mm.
6分＝3/4英寸＝20mm.
4分＝1/2英寸＝15mm.
另外记住管道都是以内径计算的．
不过管道的丝扣螺纹都是以中径来计算的．用通径DN表示．螺纹分公制M和英制G，管道螺纹一般用英制，螺纹角度为55度．公制是60度．．
DN15.DN20.DN25.DN32.DN40.DN50.DN65.DN80.DN100.DN125.DN150.DN200