GB/T 13663 is the Chinese national standard for polyethylene piping systems for water supply. Every PE water pipe factory in China produces to it by default, and it is the standard a Chinese quotation will name unless you ask for another. The current series — GB/T 13663.1-2017 general, 13663.2-2018 pipes, 13663.3-2018 fittings and 13663.5-2018 fitness for purpose — was rewritten to follow ISO 4427, so the dimension tables, SDR series, PE80 and PE100 material classes and the test programme are the same as the international standard.
That matters for an overseas buyer in two ways. First, pipe made to GB/T 13663.2 is dimensionally interchangeable with ISO 4427-2 and EN 12201-2 pipe: DN315 SDR 17 has the same wall in all three. Second, a Chinese factory's routine test records are already in the format those standards require — hydrostatic strength at 20 °C and 80 °C, MFR, OIT, carbon black, reversion — so asking for ISO or EN marking is a change of paperwork and labelling, not of product or process.
Where the standards differ is in what surrounds them. GB/T 13663 pipe for drinking water must also meet GB/T 17219 for hygienic safety, the Chinese equivalent of WRAS or NSF 61; that approval is not recognised abroad, so export projects need the destination country's approval on top. And Chinese certificates are often issued by the factory itself; if your project requires third-party witnessing, say so, because it has to be arranged before the batch is produced.
We produce to GB/T 13663.2 as standard and re-mark and certify to ISO 4427-2 or EN 12201-2 for export orders. The extrusion line, compound and test rig are the same; the difference is which standard number goes on the pipe and which format the certificate takes.
Key features
- Parts 1, 2, 3 and 5 of the 2017–2018 series, rewritten to follow ISO 4427
- Identical SDR series, wall thicknesses and PE80 / PE100 classes to ISO 4427 and EN 12201
- Drinking-water hygiene under GB/T 17219 — not recognised outside China
- Routine factory tests match the ISO 4427 programme, so re-marking for export is paperwork
- Third-party witnessing must be arranged before production, not at inspection
Specifications
| Full title | Polyethylene (PE) piping systems for water supply (给水用聚乙烯(PE)管道系统) |
|---|---|
| Parts | 13663.1-2017 General · 13663.2-2018 Pipes · 13663.3-2018 Fittings · 13663.5-2018 Fitness for purpose |
| Relationship | Modified adoption of ISO 4427; dimensions and material classes identical |
| Materials | PE80 (MRS 8 MPa), PE100 (MRS 10 MPa) |
| Size range | DN16 to DN2000 |
| Hygiene | GB/T 17219 for drinking water (China only) |