The program is to process all kinds of oil well pipe thread and casing coupling.
该项目是加工各类油井管螺纹、套管接箍的机械加工项目。
A kind of ringed core pulling mechanism of injection die of plastic casing coupling is introduced.
介绍了塑料管套注射模的环形型芯抽芯机构。
A kind of ringed core pulling mechanism of injection die of plastic casing coupling is introduced.
介绍了塑料管套注射模的环形型芯抽芯机构。
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