Because of the differences in the kinds and content of elements in steel, there are many kinds of steels. Today, Jinan Iron and steel agents at small level, I would like to introduce the classification and use of steel.
1. Thread steel:
Thread steel specifications range is generally in 6-50mm, we usually involve more and more are 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 25mm, 28mm, 32mm, 36mm, 40mm and so on. Deviation allowed by country: 6-12mm deviation is + 7%, 14-20mm deviation is + 5%, and 22-50mm deviation is + 4%. Thread steel generally fixed length 9m and 12M, in which 9m long thread is mainly used for normal road construction, 12m long thread is mainly used for bridge construction.
Usually involves more specifications for 6.5mm, 8.0mm, 10mm, in addition to 5.5mm, 6.0mm, 7.0mm, and so on. At present, the biggest diameter of wire rod produced in our country can reach 30mm. The allowable tolerance of other wire rod production is at + 0.4mm. The common grades of wire rod are generally divided into three kinds: Q195, Q215 and Q235. According to the rolling speed, the wire rod can be divided into general line, high speed line and quasi high wire line
Construction steel, as its name suggests, is like wire rod disk steel together, the general market is the majority of 6.5-8.0-10-12-14.
4, round bar:
圆钢圆钢是指截面为圆形的实心长条钢材。其规格以直径的毫米数表示，如“ 50”即表示直径为 50毫米的圆钢。
Round bar or round bar refers to a solid strip of steel with a round section. The specifications are expressed in millimeters of diameter, such as "50", which means a round bar of 50 millimeters in diameter.
Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of them: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. They are more than 25 millimeters of round steel. They are mainly used in the manufacture of mechanical parts or seamless steel tube billets.
本文由济钢一级代理商友情奉献,更多有关的知识请点击:http://www.jnyygt.com我们将用最先进的技 术，最真诚的态度,为您提供最为全面的服务。我们将会陆续 向大家奉献，敬请期待。
This article by the Jinan Iron and steel agent, friendship dedication, more relevant knowledge, please click: http://www.jnyygt.com, we will use the most advanced technology, the most sincere attitude, to provide you with the most comprehensive services. We will continue to dedicate to you, please look forward to.