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首先，熱軋螺紋鋼指的就是鋼筋，不過，熱軋螺紋鋼說法有欠缺，正確的說法是熱軋鋼筋，而螺紋鋼是熱軋鋼筋的俗稱。那么熱軋與冷軋有什么區別呢？簡單來說，就是把鋼材加熱后控制在再結晶溫度以上進行軋制加工的工藝稱為熱軋。而在再結晶溫度以下，包括常溫下進行軋制加工的工藝稱為冷軋。
First of all, hot-rolled rebar refers to the steel bar, but there is a lack of hot rolled thread steel, the correct saying is hot rolled steel, while the rebar is commonly known as hot-rolled steel. So what's the difference between hot rolling and cold rolling? Simply speaking, the process of rolling steel after controlling the recrystallization temperature is called hot rolling. The rolling process at room temperature, which is below the recrystallization temperature, is called cold rolling.
而熱軋鋼筋也就是我們普通所謂的高線、螺紋鋼。而冷軋鋼筋現在市場上已經幾乎見不到了。因為設計上已經不在使用這種鋼筋了。其實冷軋鋼筋多為鋼筋的二次加工，尤其是作為螺紋鋼來說，一眼便可以看出來。因為它多用8個或者10個的光圓鋼筋，在其表面用冷軋的方式軋出三面肋，加工粗糙，一般沒有什么發黑等處理，這是以前為了節省鋼筋用量采用的一種方法，加工出來的鋼筋強度是高，但是脆性差，伸長率極低，且沒有明顯的屈服點，以前常被用在板上，而現在可沒有人敢用這個了。
And hot rolled rebar is what we call wire rod and thread steel. And cold rolled steel bars are barely available in the market. Because the design is no longer used in this steel bar. In fact, cold-rolled steel bars are mostly the two processing, especially as thread steel, can be seen at one glance. Because it used round bars of 8 or 10, on the surface of cold rolled ribbed surface three way, rough machining, etc. What is generally not black, it is used in order to save a method using the reinforcement ratio, strength of steel processing is high, but the difference is very brittle, elongation low, and no obvious yield point, is often used in, and now no one dares to use this.
我們公司的產品質量值得信賴，而我們將會是您最值得信賴的朋友，您的滿意就是我們不懈的追求，讓我們共同為明天的美好而努力吧。
Our company's product quality is trustworthy, and we will be your most trusted friend, your satisfaction is our unremitting pursuit, let us work together for tomorrow's good efforts.