KZO SA have well grounded traditions and experience in grey iron casting. Our company produces about 400 cast iron sewage products.

Product types, mainly:
- socket tubes and fittings
- non-socket tubes and fittings produ¬ced in accordance with PN-EN 877 standard (systems DKI)
- sewer manholes class A, B,C and D produced in accordance with PN-EN 124 standard
- sewer steps
- street boxes for water and gas installations
- street and bridge sewage inlets
30% of them are exported.

The company holds Certificate for the implemented Quality Management System ISO 9001, as well certificates and technical approvals.