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low-temperature steel used for ball valve

           The low-temperature steel is suitable for alloy applied below 0 ℃. Cryogenic steel or ultra-low temperature steel can be used below -196 ℃. Low-temperature steel mainly has the following performances: (1) Toughness-brittle transition temperature is lower than using temperature(2) Strength meeting the design requirements  (3) Stable organization structure under using temperature  (4) Good weldability and processing-molding performance  (5) Some special applications also require lowest magnetic conductance and cold shrinkage rate.

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