ZTT256B（ZTT7023）是中天智能塔机的主力机型。它最大起重量为12t，端部吊载2.3t，工作幅度70m，独立高度可达66m，标准节可配置L68B1、L68B3、L69B3片式标准节。

        ZTT256B（ZTT7023）is the main type of ZTM intelligent tower crane. It has a max load of 12t, a tip load of 2.3t, a jib radius of 70m, and an independent height of 66m. The standard mast section can be equipped with L68B1、L68B3、L69B3 spliced mast section.

        中天智能塔机在行业中享有“智能吊装专家”的美誉，无论从塔身的钢结构、传动机构、电气控制技术，都进行了针对性的特殊设计，这让它更加适用于智能吊装作业场景，比如PC建筑施工中“吊”和“装”的两个作业阶段。中天塔机钢结构采用欧洲F.E.M设计标准，吊装系统搭载中天特有的十多个智能吊装模块，全方位的保障塔机安全，实现整个吊装作业的高效和智能。

        Enjoying the reputation of "Intelligent Hoisting Expert" in the industry, ZTM intelligent tower crane has specially designed the tower body from it’s steel structure, transmission mechanism and electric control technology, which makes it more suitable for intelligent hoisting operation scenarios, such as the two operation stages of "hoisting" and "installing" in PC building construction.ZTM tower crane adopts the European F.E.M design standard in steel structure and equips with more than ten unique intelligent hoisting modules in hoisting system, which insure the safety of tower crane all-around and realize the high efficiency & intelligence of the whole hoisting operation.