This kind of bolt has a cup-shaped end structure, which can reasonably avoid the water vapor and liquid around the rivet body according to the riveting body. In addition, the tensile strength of the closed bolt is 20% higher than that of the open bolt. The key point is that this kind of closed bolt can ensure that the nail head does not fall off. The leading role of iron rivet makes it widely used in electronic devices and electrical equipment. The sealing bolts of goodware can produce round mouth and countersunk head. There are various composition methods of aluminum / iron, aluminum / stainless steel plate, stainless steel plate / stainless steel plate, iron / iron, copper / iron, copper / copper, etc.

1. Pour oil must be added before the cap gun is used. In addition, check whether the bronchus and the air inlet are leaking

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4. The cap pulling gun has been used for too long and must be replaced and filled with lubricating grease.

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