... Shape : round, elliptical,square Sanitary Stainless steel man hole cover with pressure 1)Height:75,100,120,1502 ... :round,elliptical,square 4) TL: arc manhole cover, which can sustain a Max: static pressure ... :410x510mm, 320x440mm, 350x450mm9) Material : 304 , 316LNameStainless Steel Sanitary Tank Manhole coverNo.SHSD-MC01Material304,306LSize410x510mm,320x440mm,350x450mmConnectionNoPressure Height75 ...