All HL-products are subject to continuous factory inspections. Products with test symbols are taken a regular official monitoring and correspond to ÖNORM.The weldability of our PE-drains with all PE-pipe-product lines on the market is certificated by 'Österreichisches Kunststoffinstitut'.

Cast iron

Material acc. DIN EN1561 EN-GJL-200 is grey cast iron with lamellar graphite. Parts, which are made of this material, are delivered with black coating, which serves only as transport protection.
Due to the natural features of this material, superficial corrosion may happen, which does not affect function and stability of these parts.

Note on processing: In combination with liquid coatings, multi-component floor coatings (reaction resins, industrial floors based on PU and epoxy), it cannot be ruled out that the contact with chemicals may lead to an increased tendency to corrosion. Appropriate caution in processing is recommended in these applications!


Bitumen membranes

SBS modified bitumen membrane with elastomer attributes; polyester mat 235g/m²; thickness 4,5mm; according to DIN52133, DIN52123 and DIN4102 (resistant to flying sparks and radiant heat); resistant to all chemicals in the atmosphere; welding with L.P.G. burners.

EPDM (ethylene-propylene-terpolymere-rubber)

Multi-purpose waterproofing membrane; resistant to ozone, UV- and IR- rays; radix-proof according to DIN4062; according to DIN4102 class "B2" (resistant to flying sparks and radiant heat); thickness 1,0 - 1,2mm, weight 1,2 or 1,4kg/m² respectively; bonding to bituminous coatings, boards or membranes.

Lead (Pb 0,15%Sb)

1mm thick – lead collar for traditional lead waterproofing; soldering on lead (also available at HL).

Textile coated membrane

Textile coated membrane: Multi-purpose waterproofing with 2-component bitumene glueing or for alternative waterproofings with 2 component epoxy resins.