"Coupling Screws " CNS Standards List| Guide the | Test Methods | Method Test | Torque Type | Quality management | Method Test | Needle Bar | Method calculating | |
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CNS 4948
2017 Edition Coupling Screws with Collared Nut and Washers for Double-Ties 具突緣螺帽及墊圈之連接螺釘（雙併枕木用） |
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CNS 4948
1982 Edition Coupling Screws with Collared Nut and Washers for Double-Ties 具突緣螺帽及墊圈之連接螺釘（雙併枕木用） |
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