Reaffirmed 2021

1. SCOPE

This standard covers the requirements of ribbed screen, plain screen and plain casing pipes ofnominal diameter 35 mm to 400 mrn, produced from unplasticized polyvinyl chloride for bore/tubewells for water supply.

NOTE - It is the responsibility of the purchaser or the specifier to make the appropriate selections taking into account their particular requirements and any relevant national guidelines or regulations and installation practices or codes.

2. REFERENCES

The standards listed below, contain provisions, which through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below:

554: 1999 Pipe threads where pressure tight joints are made on the threads Dimensions, tolerances and designation (fourth revision)

4669: 1968 Methods of tests for polyvinyl chloride resins

4905: 1968 Methods of random sampling

4985:2000 Unplasticized PYC pipes for potable water supplies Specification (third revision)

10148: 1982 Positive list of constituents of polyvinyl chloride and its copolymers for safe use in contact with foodstuffs, pharmaceuticals and drinking water

10151 : 1982 Specification for polyvinyl chloride (PYC) and its copolymer for its safe use in foodstuffs, pharmaceuticals and drinking water

12235 Thermoplastics pipes and fittings - Methods of test:

(Part 1): 2004 Measurement of dimensions (first revision)

(Part 2) : 2004 Determination of vicat softening temperature (first revision)

(Part 4) : 2004 Determining the detrimental effect on the composition of water (first revision)

(Part 9): 2004 Resistance to external blows (impact resistance) at 0° C (roundthe- clock method) (first revision)

(Part 13): 2004 Determination of tensile strength and elongation

(Part 14): 2004 Determination of density/relative density (specific gravity) (first revision)