A cylinder connected to a cone is often met in sheet metal work.
园柱管与园锥相接合，在钣金工作中是经常遇到的。
Today, B&J specializes in welding, machine parts and precision sheet metal work.
如今，B&J公司专门从事焊接、机械零件和精密钣金业务。
They are employed by sheet metal fabrication shops, sheet metal products manufacturing companies, sheet metal work contractors and various industrial sectors.
他们受雇于钣金加工车间，钣金产品制造企业，钣金工程承建商以及各工业部门。
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