Properties

Hozen Williams coefficient 150 remains constant.
Maximum bending stress 21kgf/cm2
Durometer hardness 80 (as per ASTM-D-1785)
Water adsorption in 24 hours 0.01 %
Flammability will not support combustion self extinguishing
Specific gravity 1.4 to 1.43
Tensile strength 450-560kgf/cm2
Compressive 600-700kgf/cm2
Flexural strength 650-700kgf/cm2
Vicat softening point >800



DIMENSIONS OF SWR PIPES: (All sizes in mm)

Nominal Outside Diameter Mean Outside Diameter

Wall thickeness
TYPE A

TYPE B

Max Min Max Min Max Min Max
40 40.0 40.3 1.8 2.2 3.2 3.8
50 50.0 50.3 1.8 2.2 3.2 3.8
63 63.0 63.3 1.8 2.2 3.2 3.8
75 75.0 75.3 1.8 2.2 3.2 3.8
90 90.0 90.3 1.9 2.3 3.2 3.8
110 110.0 110.4 2.2 2.7 3.2 3.8
125 125.0 125.4 2.5 3.0 3.2 3.8
140 140.0 140.5 2.9 3.4 3.6 4.2
160 160.0 160.5 3.2 3.8 4.0 4.6



COMPARISON OF uPVC SWR PIPES WITH CAST IRON AND ASBESTOS CEMENT PIPES

PROPERTIES UPVC SWR PIPES CAST IRON PIPES ASBESTOS CEMENT PIPES
Impact Strength Good Good No Impact Strength
Durability 50 years 20 years  No Guaranty
Inertness to chemicals Excellent Chemical Resistance Gets Oxidized Good Resistance
Fungus Growth Negative Positive Positive
Installation Labor Less Labor More Labor More Labor
Maintenance Easy to clean and inspect due to threaded door cap Difficult to open caps Difficult to open caps
Non Conductivity Non Conductivity Not Safe Not Safe
Aesthetic Aesthetically for superior Not Attractive Not Attractive