概述 Z字钢的种类很多,按其断面特点,可以分为如下三类(图1): (1)正Z字钢——两腿厚度、长度全相同,腰的厚度比两腿的厚度或大、或小、或相等,但腰部厚度是均匀的; (2)非正Z字钢——两腿长度不一样,而其厚度和腰部厚度都是相同和均匀的; (3)变形Z字钢——两腿长度、厚度不均匀, Overview Z-type steel is many types, according to the characteristics of the section, can be divided into the following three categories (Figure 1): (1) is the Z-shaped steel - the thickness of both legs the same length, waist thickness than the thickness of the legs or Large, or small, or equal, but the waist thickness is uniform; (2) non-positive Z-shaped steel - the legs are not the same length, and its thickness and waist thickness are the same and uniform; Steel - Legs length, uneven thickness,