"Spiral steel " CNS Standards List |
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CNS 12738
2021 Edition Method of Test for Spiral steel Forms for Hollow Slab 中空樓板用螺旋鋼製管模檢驗法 |
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CNS 12739
2019 Edition Spiral steel tubes for prestressed concrete 預力混凝土用螺旋鋼製套管 |
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CNS 12737
2018 Edition Spiral steel Forms for Hollow Slab 中空樓板用螺旋鋼製管模 |
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