"Refractoriness " CNS Standards List| Ships | Leisure karts | Sealing Reagent | Arc welding | Color Code | Methods Measurement | Hexagon nuts | Hexagon Socket | |
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CNS 621
2020 Edition Method of Test for Refractoriness Under Load of Refractory Bricks 耐火磚荷重耐火度試驗法 |
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