Wholesale 4J49 expanded alloy imported Invar round bar factory price direct sales

Wholesale expansion alloy imported Yinhua Steel round rod factory price direct sales
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'. Within a certain temperature range, it has a linear heating expansion coefficient close to that of soft glass
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'. The electric vacuum industry neutralizes and responds to the soft glass for matching sealing
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'. It has a certain linear heating expansion coefficient within a certain temperature range
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'. In the electric vacuum industry, soft glass or corresponding ceramics are used for matching sealing
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'. Within a certain temperature range, it has a linear heating expansion coefficient close to that of hard glass
'
'. Suitable sealing with hard glass in the vacuum industry
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It has a certain linear heating expansion coefficient within the Song font scale
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'. Electric vacuum industry The neutralized hard glass is suitable for sealing
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'. Within a certain temperature range, it has a linear heating expansion coefficient close to that of soft glass. Corrosion-resistant
'
'. Electric vacuum industry neutralizes and responds to soft glass for matching sealing
'