The invention simplifies the process layout, saves the equipment space, reduces the temperature reduction of the tube blank, lowers the production cost and improves the production efficiency.
本发明简化工艺布局、节省设备空间、减少管坯温降、降低生产成本，提高了生产效率。
The invention simplifies the process layout, saves the equipment space, reduces the temperature reduction of the tube blank, lowers the production cost and improves the production efficiency.
本发明简化工艺布局、节省设备空间、减少管坯温降、降低生产成本，提高了生产效率。
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