What materials does this standard apply to?

It applies to fittings made from polyethylene grades PE 80 and PE 100 (Clause 4).

Can these fittings be used for water pipelines?

No, this standard is specifically for fittings used in the supply of gaseous fuels. Fittings for water supply are covered by different standards.

What is a critical test for an electrofusion joint made with these fittings?

The hydrostatic strength test on an assembled joint is a critical performance requirement to ensure it can withstand internal pressure without failure (Clause 6.1).

Is this standard still active?

No, IS 15927-3:2000 has been withdrawn and replaced by IS 16738 (Part 3):2018.

IS 15927

: 2000

Polyethene Fittings for use with Polyethylene Pipes for the supply of Gaseous Fuels - Specification, Part 2: Spigot Fittings for Butt Fusion for Socket Fusion using Heated Tools and for use with Electro Fusion Fittings

CurrentSpecializedSpecificationBIMMEP · Plastic Piping System

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This standard specifies the requirements for polyethylene (PE) electrofusion fittings, such as couplers and saddles, used for joining PE pipes in gaseous fuel supply networks. It covers material properties (PE 80, PE 100), dimensional standards, and performance criteria for the fittings and the final welded assembly.

Quick Reference Values

Minimum Required Strength (MRS) for PE 10010.0 MPa

Minimum Required Strength (MRS) for PE 808.0 MPa

Hydrostatic Strength Test Stress (PE 100, 20°C, 100h)12.4 MPa

Melt Flow Rate (MFR) Deviation±20% of base resin

Applicable Standard Dimension Ratios (SDR)SDR 11 and SDR 17.6

Key Formulas

P = (20 * MRS) / (C * (SDR - 1)) — Pipe Pressure Rating Formula (from pipe standard, context for fitting usage)

Practical Notes

This standard is technically withdrawn and has been superseded by IS 16738 (Part 3):2018, which should be consulted for new projects.

Proper surface preparation, including scraping the pipe surface to remove the oxidized layer, is absolutely critical for achieving a reliable electrofusion joint.

Fusion parameters (time, voltage) are specific to the fitting manufacturer and size; always use the parameters provided with the fitting, typically via a barcode scanned by the electrofusion controller.