Guangdong Tsinghua printing equipment Co., Ltd.   

Product brand: Tsinghua product model: QH - 630 product brand: Tsinghua product model: QH 630 product features: using the expansion shaft and expansion force regulator main shaft adopts high quality steel pipe surface chrome plating, aluminum convex key flexibly and flexibly; equipped with high quality rubber liner and fast charging and discharging gas nozzle, good sealing effect, long service life, removable axle head, convenient maintenance. After inflating, the height of unilateral expansion can reach 5mm - 6mm, for example, the diameter before expansion is 74mm - 76mm, and the diameter can reach 79mm - 82mm after expansion.