Simẹnti iron manhole eeni ti wa ni pin si ductile iron manhole eeni ati grẹy iron manhole eeni, gbogbo soro, kanna àdánù ti ductile iron manhole eeni ju grẹy iron manhole ideri titẹ resistance.Awọn ohun elo ti a lo fun grẹy iron manhole ideri ni gbogbo HT200, ati awọn ohun elo ti a lo fun ductile inki ibori ni gbogbo QT500-7.

Awọn abuda ti ideri manhole inki spheroidal:

Agbara to dara.Iwọn ikolu jẹ iru si ti irin alabọde erogba ati diẹ sii ju awọn akoko 10 ti irin grẹy.

Agbara ipata ti o lagbara.Idanwo ipata omi sokiri, awọn ọjọ 90 ti ipata jẹ paipu irin 1/40 nikan, jẹ paipu irin grẹy 1/10.Igbesi aye iṣẹ jẹ awọn akoko 2 ti paipu irin grẹy ati awọn akoko 5 ti paipu irin lasan.

Ti o dara ṣiṣu.Ilọsiwaju≥7%, iru si ohun elo irin carbon giga, lakoko ti elongation ohun elo irin grẹy jẹ odo.

Agbara giga.Agbara fifẹ ob≥420MPa, ikore agbara OS≥300MPa, ati irin kekere erogba jẹ kanna, jẹ igba mẹta ti ohun elo irin grẹy.

Ohun elo: opopona ilu, opopona, ibaraẹnisọrọ, agbara, omi tẹ ni kia kia, agbegbe, ile-iwe ati awọn papa itura miiran.