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鋼鐵一般依照它的提煉方法可分為柏塞麥轉爐鋼，堿性轉爐鋼，平爐鋼，電爐鋼等。所含成份則可分為碳鋼，低合金鋼，高合金鋼等。其產品外形則分為形鋼，棒鋼，鋼板。
In accordance with the general steel refining method it can be divided into the Bessemer converter basic converter steel, steel, steel, electric steel etc.. The contents can be divided into carbon steel, low alloy steel, high alloy steel etc.. Its products are divided into shape steel, bar steel, steel plate.
1、濟鋼一級代理高溫鋼用于制造鍋爐。在500℃到600℃的溫度下連續使用，仍能保持其機械特性。銅是高溫鋼的主要合金元素。
1 、 first grade high temperature steel is used for boiler making. Its mechanical properties can be maintained for continuous use at temperatures between 500 and 600 degrees celsius. Copper is the major alloying element of high temperature steel.
2、 耐熱鋼在鋼中加進鉻、鎳和硅能使鋼耐1300℃之高溫。此種鋼通常用于制造產業用爐及電阻絲等。
2, heat-resistant steel in steel adding chromium, nickel and silicon can make the steel resistant to 1300 degrees of high temperature. This kind of steel is usually used for industrial furnaces and resistance wires.
3、不銹鋼在鋼中加進少量銅可延緩鋼在空氣中的腐蝕率。若在鋼中加12％以上之鉻則可避免鋼之腐蝕。若再加進鎳則腐蝕性更好，且進步鋼之勒性。目前食品產業及化學產業正廣泛地使用不銹鋼。廚房用具，餐具和外科用具也用不銹鋼制造。
3, stainless steel in the steel with a small amount of copper, can delay the corrosion of steel in the air. If more than 12% chromium is added to steel, the corrosion of steel can be avoided. If nickel is added, the corrosion is better, and the elasticity of the steel is improved. Stainless steel is widely used in the food and chemical industries. Kitchenware, tableware and surgical instruments are also made of stainless steel.
4、濟鋼一級代理工具鋼的含碳量高于結構用鋼，通常用于制鋸條，鉆頭等。特殊鋼則加進鉻、鎢、鈷、鉬、釩等合金元素，并經適當的熱處理。
4 、 the carbon content of the first acting tool steel of Jigang is higher than that of structural steel. It is usually used for making saw blades, drills and so on. Special steel adds chromium, tungsten, cobalt, molybdenum, vanadium and other alloy elements, and by appropriate heat treatment.
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