EN124 D400 Mkpuchi Manhole na Mbupu Frame na Mexico

Okwu Mmalite ngwaahịa

Ihe mkpuchi nkedo nkedo ígwè bụ ụdị ngwaahịa ígwè ductile, ígwè nkedo ductile site na spherization na nhazi nhazi nke enwetara bọọlụ graphite, na-emezi ike nke ígwè nkedo nke ọma, karịsịa na-eme ka plasticity na ike siri ike, si otú ahụ nweta ike dị elu karịa carbon. ígwè. Ọkpụkpụ nkedo bụ ihe nkedo ígwè dị elu nke egosiri na 20 ahụ^th century, which is close to steel, which is based on its excellent performance and has been successfully used to create some parts that are complex, strong, resilient and wear-resistant, Ductile cast iron has been rapidly developed second only to grey cast iron and is widely used in cast iron materials. It is called”iron generation steel”, mainly ductile iron, Ductile cast iron is divided into circular and square, in urban road management, generally adopt round manhole cover, because round manhole cover is not easy to tilt, can be better protect the safety of pedestrians and vehicles, using the circle manhole cover is mainly considered that the round manhole cover same diameter, when the hole is rolled up, it will be slightly wider than the hole in the bottom and the lid will not fall into the well.

And if you use the square manhole cover, because the diagonal is significantly longer than each of the edges, it’s easy to fall into the well along the diagonal direction of the well and cause safety risks.

N'ime ime obodo na olulu mmiri, a na-ejikarị square eme ihe, nke nwere ike igbochi ntinye nke mmiri mmiri dị ka mmiri ozuzo.

Nkọwapụta ngwaahịa