Two days ago, a friend left a message to Xiaobian, asking what level of reinforcement is hrb400? For the small editors who have been in the steel market for many years, this problem is naturally very simple, but for the friends who have just entered the steel market, it makes them difficult.

　　那么到底hrb400是幾級鋼筋呢？hrb400鋼筋也叫三級螺紋鋼，是熱軋帶肋鋼筋的一種。hrb400是此鋼筋的牌號。鋼材牌號，又稱鋼鐵產號，一般采用漢語拼音字母，化學元素符號和阿拉伯數字相結合表示鋼材產品名稱、用途、特性和工藝的方法。

　　So what level of reinforcement is hrb400? HRB400 steel bar, also known as three-stage threaded steel, is a kind of hot-rolled ribbed steel bar. HRB400 is the brand of this steel bar. Steel brand, also known as steel product brand, generally uses Chinese phonetic alphabet, chemical element symbols and Arabic numerals to express the name, use, characteristics and process of steel products.

　　說到這，我們也簡單來介紹一下三級螺紋鋼。螺紋鋼屬于小型型鋼鋼材，主要用于鋼筋混凝土建筑構件的骨架。在使用中要求有一定的機械強度、彎曲變形性能及工藝焊接性能。生產螺紋鋼的原料鋼坯為經熔煉處理的碳素結構鋼或低合金結構鋼，成品鋼筋為熱軋成形、正火或熱軋狀態(tài)交貨。

　　Speaking of this, we also briefly introduce the third-grade threaded steel. Threaded steel belongs to small steel, which is mainly used for the skeleton of reinforced concrete building components. Some mechanical strength, bending deformation and welding properties are required in use. The raw material for producing threaded steel is carbon structural steel or low alloy structural steel treated by sedation melting, and the finished steel bar is delivered in hot rolling, normalizing or hot rolling state.

　　關于hrb400是幾級鋼筋的介紹，就暫時告一段落了，如果大家還想要了解更多鋼材方面的小知識，就多多關注濟南佳正強鋼材有限公司吧，也會為大家?guī)砀噤摬闹R的。

　　About HRB400 is the introduction of several grades of steel bar, it is temporarily over. If you want to know more about steel, you should pay more attention to Jinan Jiazhengqiang Steel Co., Ltd., which will also bring you more steel knowledge.