7cde8a90___7
[0] CRITERIA [1] EFFECT OF HARD WATER [2] EFFECT OF SOFT WATER [3] HEALTH CRITERION [4] JOINTING TECHNIQUES [5] CORROSION RESISTANCE [6] THERMAL STRENGTH PROPERTY AT 60 c TEMP. [8] THERMAL EXPANSION [9] EFFECT OF SUB-ZERO TEMP. [10] UV RESISTANCE [11] EASE IN INSTALLATION [12] FLOW PROPERITES FOR FRICTION [7] 
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