According to the charcteristics of cable and the varing of the top dislacement of the fixed tower frame,the paper puts forward the method of design and construction control of tower frame s wind cable, which regards the permitted top displacement of the tower as the control aim.

Pointed to the quality inspecting problems of zinc coating for the steel tower unints when they have been on the process of hot coating dip galvanizing,this paper have summarized the quality inspeceing method including three aspects such as deposit rate,homogeneity,cohesions for the zinc galvanizing layer.

Combined with the producing practice,this paper introduces its working principle and process of the spot welding of wiper fixed bracket and the factors influencing the welding quality.

The bending technology of fixed bracket for the tube of excavator was analyzed.

Importance of fixed support in heat pipe net;

The result shows that the scheme using ball joint compensators is feasible, which reduces the quantity of fixed supports and is easier to construct.

In the design of the compensators and supports of the piping line, th e amount and the recuperability of the fixed supports should be reduced as much as possible, and the distance between any two fixed supports should be enlarged as much as possible according to the features of the piping line, from which the economic benefit of the piping line can be fully embodied.