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CJ/T 234-2006

HDPE geomembrane

Smooth or textured sheet in high-density polyethylene, made on a three-layer co-extrusion line. Thickness 0.25–3.0 mm, width up to 8 m.

The brochure says the resin is HDPE and that every product is produced and tested with reference to GRI practice, ASTM methods, the urban-construction standard CJ/T 234-2006, and GB/T 17643-1998.

That sentence is a manufacturing statement. The brochure does not show a CE mark, a notified-body number, or an ASTM listing, and this site does not add one. Later editions of GB/T 17643 exist; confirm which edition your engineer requires.

Joining is described as hot-wedge welding.

What the brochure emphasises

  • Smooth and textured surfaces.
  • Described for landfills, wastewater and industrial containment.
  • Also named for reservoirs, dams, rivers and lakes, metro and tunnel work, basements, artificial lakes, and building waterproofing.

Uses named in the brochure

  • Landfills, wastewater plants, petrochemical and metallurgical containment.
  • Reservoirs, embankments, rivers and lakes.
  • Metro, tunnels and underground warehouses.
  • Landscape lakes and other waterproofing.

Laying notes printed in the brochure

These are the manufacturer’s notes. They do not replace the project specification or the engineer’s method statement.

  • The brochure names hot-wedge welding as the seam method.

Stated in the brochure

  • Tensile strength at break is stated as greater than 28 MPa.
  • A very low water-vapour permeability is claimed. The coefficient in the scan is not legible enough to reprint.
  • Service life is described as on the order of a hundred years, and a cold-brittleness range near −66 °C to −77 °C is printed. No test report is attached in the brochure.
  • The sheet is described as resistant to a long list of strong acids and alkalis, as non-toxic, and as used on drinking-water works outside China.
  • The 8 m line is described as the widest then running in China. Treat that as the company’s description, not an independent ranking.

Index table

A numerical table is printed for this product. It is not copied here, because the scanned cells could not be read without guessing. Ask for the current data sheet with your enquiry.