"manhole " CNS Standards List |
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CNS 3803
2021 Edition Precast reinforced concrete manhole for sewerage work 磨石子板及磨石子地磚 |
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CNS 6176
2019 Edition Ships' manholes 船用人孔 |
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CNS 10071
2019 Edition Small Size manhole for Marine Use 船用小型人孔 |
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CNS 4995
2018 Edition Reinforced Concrete manhole Blocks for Sewerage Work 下水道用鋼筋混凝土人孔井壁 |
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CNS 14813
2018 Edition Polyester resin concrete manhole 聚酯樹脂混凝土管(明挖施工法用) |
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