IS 8329:2000

In this competitive scenario, it isn't easy to survive in the market without a standard quality and certified product. BIS license may also be required to sell products in the Indian market.

To get BIS certification and produce a standard quality product, the manufacturer must ensure that their product must follow the specified Indian standard.

Let’s take a closer look at IS 8329:2000 of centrifugally cast (spun) ductile iron pressure pipes.

This standard specifies the requirements and associated test methods for ductile iron pipes and their joints manufactured in metal (lined or unlined) or sand moulds for the construction of pipe lines:

  • To convey water, sewage, or gas
  • To be installed either underground or above ground
  • Can be used with or without pressure

This standard also specifies requirements for ductile iron pipe materials, dimensions and tolerances, mechanical properties, and standard coatings and linings.

This standard does not restrict the use of other types of joints or future developments of other joints, as long as overall dimensions are kept consistent for safety and interchangeability.

The standard applies to pipes that are manufactured with socketted, flanged, or spigot ends for jointing with various types of gaskets, which are not covered by this standard, and that is normally delivered externally and internally lined and suitable for fluid temperatures ranging from 0°C to 50°C, excluding frost.

This standard does not include provisions for fittings used with this standard's pipes, and the specification for such fittings is covered by a separate standard, IS 9523. When the pressure requirements match, fittings conforming to IS 13382 can also be used with ductile iron pipes.

Depending on the service conditions and manufacturing process, pipes are classified as K7, K8, K9, KIO, or K12. The general requirements for material supply shall be as specified in IS 1387. The metal used in the manufacture of pipes must be of good quality and meet the mechanical requirements outlined in the standard.


The following test shall be carried out in accordance with the method specified.

  • Mechanical test
  • Brinell hardness test
  • Dimension and size
  • Coating
  • Tensile test


Each pipe shall be marked with information as specified in the standard. The Standard Mark (ISI Mark) may also be applied to the pipes. The manufacturer must obtain a BIS licence from the Bureau of Indian Standards to use a standard mark (ISI Mark). The BIS issues a license based on a successful evaluation of the manufacturing infrastructure, quality control, testing capabilities, and manufacturing process.

isi mark


For Detailed Information about the Procedure for BIS ISI Certification


If a product falls under the scope of the BIS Conformity Assessment Scheme, All the manufacturers, importers, and foreign entities must obtain BIS ISI Certification. The Bureau may cancel the License if the product fails to meet certification requirements.

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