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Usoro mbuli elu nke precast nzọụkwụ

Nkọwa dị mkpirikpi:


Nkọwa ngwaahịa

Mkpado ngwaahịa

Nzọụkwụ Manhole

Anyị nwere ike na-emepụta ụdị dị iche iche nke plastic manhole nzọụkwụ, anyị nwere zuru nso nke nzọụkwụ, dị ka Iron, Carbon ígwè, igwe anaghị agba nchara, aluminum na plastic encapsulated.
Anyị na-enwekwa ike ịzụlite ọhụrụ aghụghọ na ndị ahịa si osise ma ọ bụ sample.
Ozi ndị ọzọ dị mgbe nnata nke ajụjụ gị.

Ụkpụrụ

1) DIN19555/EN13101
2) BS1247


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