产品亮点:新型钢材、独创液压系统STC750S是三一重起整合之后全新推出的起重机新品,采用了新型钢材制造的U型主臂,臂头、臂尾采用了紧凑式设计,大臂重量相比上一代机型降低50%,更低的大臂重量使得S系列设备可以搭接更长的副臂。在液压系统方面,STC750S采用了点比例泵控系统,匹配三一独创的双泵合流液压系统,稳定性和高效性都得到了有效保障。带压力切断的两点式电控变量卷扬马达,单绳拉 Product Highlights: New steel and unique hydraulic system STC750S is a new crane launched after the integration of SANY. The U-shaped main boom made of a new type of steel has been adopted. The arm head and arm tail adopt a compact design. Compared with the boom weight 50% lower on the previous generation model, the lower arm weight makes the S-series devices can take longer jumpers. In the hydraulic system, STC750S uses a point proportional pump control system, matching Trinity’s unique dual-pump confluence hydraulic system, stability and efficiency are effectively protected. Two-point electric controlled variable volume winch motor with pressure cut-off, single-string pull