Gantry frame structure is adopted, with high intensity and without deformation.
采用龙门框架结构，强度高，不变形。
The bolt fastening metal structure of tower crane and pin structure without deformation, no weld crack.
塔吊的紧固金属结构的联接螺栓和销轴，结构件不得有变形，焊缝不得有裂纹。
Adopt high quality rectangle steel pipe which features in reasonable structure, firm, high intension, without deformation.
机器采用优质矩形钢管焊接而成，结构合理、牢固、强度高、不变形。
Adopt high quality rectangle steel pipe which features in reasonable structure, firm, high intension, without deformation.
机器采用优质矩形钢管焊接而成，结构合理、牢固、强度高、不变形。
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