The material used for Düker cast iron sewage pipes and
fittings corresponds to the regulations of DIN EN 877 with
the following characteristics:
Density: Approx. 7.2 kg/dm³ (71.5 KN/m³)
Minimum tensile strength: 150 MPa for fittings, 200 MPa for
pipes
Compressive strength: Approx. 3 to 4 times the value of the
minimum tensile strength
Shearing strength: 1.1 to 1.6 times the value of the minimum
tensile strength
Crushing strength: 350 MPa (for DN < 250)
or 332 MPa (for DN = 250 or more)
Poisson’s number: 0,3
Coefficient of length expansion: 0.0105 mm/mK (between 0º
and 100 ºC)
Thermal conduction coefficient: 50 - 60 W/mK (at 20 ºC)
Modulus of elasticity: 8 x 104 to 12 x 104 N/mm²
Coatings protect and finish cast iron sewage pipes and fittings.
Coating technologies distinguish a manufacturer for his know-how
and experience.
|
Products
