... round, elliptical,square Sanitary Stainless steel man hole cover with pressure 1)Height:75,100,120,1502) ... elliptical,square 4) TL: arc manhole cover, which can sustain a Max: static pressure of 2bar(under the ... temperature of 20°C )5) TL-l: arc manhole cover, ... flat manhole cover ,with high bracket, used big vessels with lagging material.8) TL-P: can sustain a Max. ...