... 3)Shape : round, elliptical,square Sanitary Stainless steel man hole cover with pressure 1)Height:75,100,120,1502)Standard:DIN ... ,ISO,AS3)Shape:round,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, with high bracket, used big vessels with lagging materials.6 ...