Construction elements in the nature of metal grates for forming borders of sportsgrounds and playfields

Prefabricated construction parts for the construction of sports grounds and playfields, namely, concrete draining structures consisting of water drainage channels and deflow-pipes, lids and plates for these channels and pipes, water inflow boxes and sinks and lids and plates therefore; construction elements and stones for forming borders of sports grounds and playfields, prefabricated construction parts for forming borders of pits for long jump, high jump and iron ball putting all in the nature of synthetic, non-metal surfaces for playgrounds, sports terrains and play areas; stones for the fastening and bordering of artificial playing turf; all of the aforementioned goods made in whole or substantial part of non-metal materials, and wholly or partly consisting of mineral building materials, including cement, concrete, plastic concrete, plastic, rubber and rubber substitute materials, earthenware, porcelain, glass