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what is the difference between NP2 Class and NP3 Class RCC
Hume pipes
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Answer Posted / sudhir
the main difference between np2, np3 and np4 rcc pipes are: np2 is low quality pipes , np3 is medium quality pipes and np4 is higher quality pipes. means np2 strength is low np3 medium and np4 good, but mainly contacter used np2 class pipes because they are available any where and low cast.
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