Specifications ● Manhole main part steel 1.4301 / 1.4404 ● Manhole cover steel 1.4301 / 1.4404 ● EPDM Gasket Ring ● Plastic handle ● Inner-open Type ● Matte treatment on both inner and outer ● Oval Dimension(mm):446×311 ● Welded with full welding technology Alternatives ● Optional 304, 316, 316 L Steel ● Polishing degree selection 0.4μm-0.8μm ● Treatment could also be mirror polishing or sandblast ● Height can be customized ● Handle material could be stainless steel ● Gasket material can be an alternative EPDM , FPM PRODUCT PARAMETERS Standard size /* At temperature 50℃/122℉ Please refer to the specifications on the right *1BAR ≈14.5PSI≈0.1Mpa 
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