Quality Management System

At Goodwill, where quality is top priority, tough quality system ensures adherence to perfection in standards and consistency.

Poly Vinyl Chloride (PVC) Standard Physical Properties maintained at Goodwill Polyplast




Grey, Dark Grey, White, Blue, Green.

Specific Gravity

1 .38 g/cm3

Water absorption (% in 24 his @ 23 °C)


Compressive Strength (Mpa)

66 Mpa

Tensile Strength (Mpa 26°C)

52 Mpa

Modulus of Elasticity in Tension (@ 23 °C)

3400 Mpa

Flexural Strength (Mpa)

93 Mpa

Impact Strength (izod) (kgf.m)

0.098 kgf.m

Specific Heat (Cal / g /°C)

Approx 0.25

Coefficient of linear thermal expansion °C

5 X 10 -5 ° C

Maximum Operating Temperature (Under Pressure)

60° C

Softening temperature (BS 2782) °C

78° C

Electrical Resistance

Greater than 10 14 ohm.cm

Thermal Conductivity

16 X 10° wm -1 °c -1

Heat Resistance at continuous Drainage (°C)

(66 °C)

Support Combustion

No. Self Extinguishing

Quality Standards ensured at Goodwill Polyplast as per IS 4985:2000

  • ISI mark PVC pipe must be ONLY in LIGHT GREY Colour with SMOOTH inner and outer surfaces, and visually sound.
  • Effective length of pipe should be 6 mtr. Socketed part must not be counted in length.
  • Pipe cutting should be without burr.
  • Above are the parameters laid down by Bureau of Indian standards for visual appearance. As a customer you must check above.
  • Thickness can be verified by ball point micrometer and O.D. by pie tape OR O.D. can be checked by customer by inserting pipe in good quality Pipe fitting. Pipe must go tight in the fitting to ensure leak proof joint with solvent cement.
  • The wall of the pipe shall not transmit more than 0.2 % of the visible light.
  • ISI standard 4985 is silent about weight of pipe; Thickness of the pipe must be as per IS and following test are carried out before marking ISI. Dimension test, Opacity, Effect on Water, Reversion Test, Short Term and Long Term Hydrostatic Pressure Test, Impact test, Ash Content Test, Specific gravity test.