年表作成・共有サービス - pastport

There is a metal repair agent on the market

Common defects of cast iron castings are: air holes, sticky sand, sand inclusions, sand holes, bulging sand, cold partition, insufficient pouring, shrinkage, shrinkage, lack of meat, sarcoma, etc. Solutions to casting defects: casting defects such as pore

• できごと(1)
• by ldingu
• at 2020/04/25 09:53