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ʻO ASTM A888/CISPI301 ʻO ka Pipa ʻĀina Hao ʻole Hubless
ʻO nā huahana me ka hōʻailona UPC® e pili ana i nā code a me nā kūlana ʻAmelika pili. ʻO nā huahana me ka hōʻailona cUPC® e pili ana i nā code a me nā kūlana kūpono o ʻAmelika a me Kanada.
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1990 Hoʻokahi Spigot a me Socket Hoʻoheheʻe ʻia i ka hao wai/ventilating Paipu
ʻO ka paipu hao hao e like me BS416: Māhele 1:1990
Maikaʻi: Haʻa Hanahinahina
Nui: DN50-DN150
Ka uhi loko a me waho: ʻeleʻele bitumen