In the fabrication of petrochemical plant (pressure vessel), the keys to quality control of bumped head are the diameter calculation of head blanking and its forming.
在石油化工设备压力容器制造中，对于整体冲压成形封头的质量控制关键是封头展开下料毛坯直径展开计算和冲压成形环节。
In the fabrication of petrochemical plant (pressure vessel), the keys to quality control of bumped head are the diameter calculation of head blanking and its forming.
在石油化工设备压力容器制造中，对于整体冲压成形封头的质量控制关键是封头展开下料毛坯直径展开计算和冲压成形环节。
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