Introduction of a new type of paper sprue pipe for
FIN PAPER SPRUE TUBE. Advantages: l Higher refractoriness than ordinarypaper tubes, for cast steel; l Appropriately wall thick, tight sealing; l Provide complex shapes and extra longfittings; l Accurate shape size and smooth innerand outer surfaces; l Convenience use. Precautions: l Embedding in the sand must be enriched.
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