Anti-kugadzirisa sikweya yakanyarara EN124 A15 ductile iron manhole chivharo

Iyo yepamusoro chiyero ndeye EN124, iyo inotaura zvakasiyana-siyana zvehunyanzvi zvinodiwa uye nzira dzekuyedza dzemavhavha emugodhi.Panyaya yekudzivirira-kugadzirisa, ductile iron manhole manhole anowanzo tora madhizaini akasarudzika, akadai sekuwedzera zvimiro zvekutsigira kana kutora anti-mvura nhanho yekudonha tekinoroji, iyo inogona kunyatso kudzivirira manhole anovhara kubva pakunyura kana kuputika nekuda kwekugadzika kwenheyo.Iyi nhanho yekurwisa-kugadzirisa inobatsira kuve nechokwadi mafambiro akachengeteka emigwagwa nenzvimbo dzevanofamba netsoka, uye kuderedza tsaona uye kukuvadzwa kunokonzerwa nekugadziriswa kwemanhole mavhavha.Zvinokurudzirwa kuti pakusarudza uye kuisa nodular cast iron manhole zvivharo, zvinodikanwa kuve nechokwadi kuti vanosangana nezvinodiwa zveiyo inotakura-inotakura kirasi A15 uye yekumisikidza chiyero EN124, uye sarudza akakodzera ekudzivirira kugadzirisa zvinoenderana nemamiriro chaiwo. chengetedza kugadzikana uye hupenyu hwebasa hwechivharo chegomba.

Yedu ductile iron manhole mavhavha anovakwa kuti agare.Kuvakwa kwayo kunogara kwenguva refu uye inodzivirira marara inoita kuti ive yakakodzera kushandiswa munzvimbo dzakasiyana siyana, kusanganisira nzvimbo dzinowanzoita mamiriro ekunze.Iyo yakasimba ductile iron zvinhu inoita kuti zvivharo zvedu zvimire muyedzo wenguva uye kushandiswa kunorema, zvichideredza kudiwa kwekugara kuchitsiva.