Dear ladies and gentlemen, my name is ECKER Marco. I am the central purchaser in Germany. We have 5 locations in Europe and also in Florida / U.S.A. one. I am looking for a manufacturer that makes us reliable and with the best quality manhole covers made of stainless steel. As seen in the pictures and our brochure, our self-developed product !! Here SA1 and SA2: Manhole cover: Stable lid made of stainless steel sheet, in the middle overstayed, with internal holding device (protects against unintentional closing of the lid / only detachable by hand), with self-closing cap and brass cap, openable only with operator key with gas spring as opening aid, on the frame with sturdy, concealed hinges, lid 100 ° hinged, scope of delivery with operator key. seals: All covers are equipped with replaceable, frost and weather resistant rubber seals. versions: Type RA: without insulation Type RB: with insulation Type RC: with vapor hat, without insulation Type RD: with vapor hat, with insulation Applications: Pumping Stations well shafts exhaust ducts source shaftsUsage:manhole cover;for garden und instalation shaft;outside useWaterproof:waterproofed;save for rainMovement:to open about 100 degrees Show More