For example, connecting a steel pipe to a copper pipe or to a copper electrical grounding system results in corrosion of the steel.
例如，把钢管和铜管相连或钢管和铜的接地系统相连就会导致钢的腐蚀。
The invention relates to the technical field of the manufacturing of the pipelines of an air conditioning system and particularly discloses a method for expanding a copper pipe.
本发明涉及空调系统管路制造技术领域，且特别公开了一种铜管的胀管方法。
To clean off the moisture on the surface of the copper rod, a blower is fixed at the end of the guiding pipe.
收线导管出口处装有吹水装置，以清除铜杆表面水份。
The utility model relates to a water pipe class, particularly a heat preservation copper water pipe covered with plastics.
本实用新型涉及水管类，特别涉及一种覆塑保温铜水管。
The clamping copper pipe structure has the beneficial effect that the precision requirement when in small-hole machining can be ensured as the copper pipe keeps a good state all the time.
本实用新型的有益效果是：由于铜管一直保持良好状态，从而保障了小孔加工时的精度要求。
A technology to form copper long-branch tee pipe directly in compound forming of bulging and extrusion is developed, the formula and calculation of the forming force are introduced.
对紫铜长支管T型管复合胀形工艺进行了试验研究，介绍了包括冲头挤压力的公式与计算，试验中所用复合胀形模具结构和部分重要零件的设计与选取及试验结果。
Drill a hole in the centre of the blank PCB so that the copper pipe is a tight fit in the hole.
在空白电路板的中间钻一个小孔，使得铜管正好紧紧地固定在中间。
Drill a hole in the centre of the blank PCB so that the copper pipe is a tight fit in the hole.
在空白电路板的中间钻一个小孔，使得铜管正好紧紧地固定在中间。
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