Hydraulic top are important components of the rollover, in accordance with the different deadweight tonnage. Generally, there are 110, 125, 130, 150 different diameter, the general standard load does not exceed 60 tons of 110 from the P5 + 1 (5 a lifting oil cylinder, a displacement cylinder) or 130 4:1; heavy 80 tons - 120 tons with 6 or 7 + 1 to 150 of the cylinder.
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