Poe a me ka huinaha ductile hao hoolei manhole uhi

Hōʻike wehewehe

● ʻO ka hiki ke halihali ikaika a ʻaʻole maʻalahi ke hoʻololi.

● ʻO ka paʻakikī hopena kiʻekiʻe a me ka ikaika kiʻekiʻe

● ʻO nā waiwai mechanical maikaʻi, maikaʻi ka hana piha

● He laumania ka ʻili a ʻaʻole pili i ke ola o nā kānaka i kēlā me kēia lā

● maʻalahi e hoʻouka.

● ʻOʻoleʻa maikaʻi.ʻOi aku ka maikaʻi o ka waiwai hopena o ke kila kalapona waena, ʻoi aku ma mua o 10 mau manawa o ka hao hina hina.

● ikaika i ka corrosion.I ka hoʻāʻo ʻana i ka corrosion wai, ʻo ka nui o ka corrosion i nā lā 90 he 1/40 wale nō o ka paipu kila a me ka 1/10 o ka paipu hao hina.ʻO ke ola o ka lawelawe ʻelua ʻelua o nā paipu hao hina a ʻelima mau manawa o nā paipu kila maʻamau.

● maikaʻi plasticity.Elongation ≥ 7/100, e like me ke kila kalapona kiʻekiʻe, ʻoiai ʻo ka mea hao hina hina ʻaʻohe elongation.

● 4. Ka ikaika kiʻekiʻe.Ua like ka ikaika o ka hao ductile me ke kila hoolei.ʻOi aku ka ikaika o ka ductile hao ma ka liʻiliʻi he 40k, ʻoiai he 36k ka ikaika o ke kila hoʻolei.I ka nui o nā noi municipal, e like me ka wai, ka wai paʻakai, ka mahu, a me nā mea ʻē aʻe, ʻoi aku ka pale ʻana o ka corrosion a me ka oxidation o ka hao ductile ma mua o ke kila kila.

● ʻOi aku ka maikaʻi o ka anti-theft a me ka hana palekana: ʻO ka ikaika tensile a me ke kūpaʻa ʻana o ka ductile iron manhole cover tweezers ua like ia me nā mea o ke kila, no laila ua kapa ʻia lākou he kila kila.Ke hoʻohālikelike ʻia me ka hao hina hina maʻamau, ua hoʻomaikaʻi maikaʻi ʻia kona elongation, maikaʻi ka paʻakikī, a ʻaʻole maʻalahi ke haki.ʻOi aku ka maikaʻi o ka hana anti-theft ma mua o nā uhi manhole hao maʻamau, a ʻoi aku ka maikaʻi o ka hana holoʻokoʻa ma mua o nā uhi manhole hao maʻamau.

● ʻAʻohe walaʻau: Ma muli o ka hale patented hiki ke pale i ka walaʻau, i ka wā e hele ai ka uhi manhole, ʻaʻohe kani, ʻaʻole hoʻopilikia hou i nā kānaka.ʻAʻohe kānalua ʻoi aku ka maikaʻi o nā uhi manhole ductile iron ma mua o nā uhi manhole ʻē aʻe.

Wahi noi

ʻO nā noi nui: nā alanui kaona, nā alaloa, nā kamaʻilio, ka uila, ka mālama wai, nā kaiāulu, nā kula.ʻO nā ʻano pāka a pau, no nā ʻōpala, nā paipu kinoea ma lalo o ka honua, nā paipu wai, nā paipu mana, nā paipu kamaʻilio.

Nā Kūlana Huahana

Hōʻike Huahana