Hydrogen will make lots of white point in casting blank, and each white point is tight crack. It will reduce quality of casting blank. Hydrogen measurement can test the quality of molten steel.
The length of paper tube is customized according to customer's requirment. Thepaper tube includes flat paper item and spiral paper item. The feature of our production include: 1. high precision. 2. quick responsable ability. 3. simple opration.
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