Installing connector inside a die and through sulphurized forming technique obtains the final products.
制品是将连接器安装至一模具内，通过加硫成型技术使之固定而成。
The test of sulphurized tufftride process for treating the hot piercing punch for steel pipes is introduced.
介绍了钢管热冲孔凸模硫氮碳共渗工艺试验。
The test of sulphurized tufftride process for treating the hot piercing punch for steel pipes is introduced.
介绍了钢管热冲孔凸模硫氮碳共渗工艺试验。
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