轧制钢材产品的种类很多,按轧制产品的断面形状分类:一、型钢型钢在钢材中品种最多。每种形状的断面又有很多不同尺寸规格。按其断面形状又可分为简单断面和复杂断面两大类。1.简单断面型材:方钢、圆钢、扁钢等方钢:其规格以其边长尺寸表示。一般方钢边长为5~250mm。圆钢:其规格以其直径尺寸表示。一般圆钢直径为5~200mm。其中直径为5~9mm的圆钢,成盘交货,故称盘条。由于断面 Many types of rolled steel products, according to the cross-sectional shape of the rolled product classification: First, steel profiles in the largest variety of steel. There are many different size specifications for each shaped section. According to its cross-sectional shape can be divided into simple cross-section and complex cross-section two categories. 1. Simple cross-section profiles: square steel, round bar, flat steel, etc. Square: Its specifications with its side length size said. General square steel side length of 5 ~ 250mm. Round bar: its size is expressed in terms of its diameter. General bar diameter of 5 ~ 200mm. One diameter of 5 ~ 9mm round bar, into a plate delivery, it is called wire rod. Due to the cross section