Cold upset female die of fillister head is the key mold in the manufacturing process of heading bolt.

冷镦圆头凹模是冷镦螺栓生产过程中的关键模具。

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Cold upset female die of fillister head is the key mold in the manufacturing process of heading bolt.

冷镦圆头凹模是冷镦螺栓生产过程中的关键模具。

youdao