钢铁一般依照它的提炼方法可分为柏塞麦转炉钢，碱性转炉钢，平炉钢，电炉钢等。所含成份则可分为碳钢，低合金钢，高合金钢等。其产品外形则分为形钢，棒钢，钢板。
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、济钢一级代理高温钢用于制造锅炉。在500℃到600℃的温度下连续使用，仍能保持其机械特性。铜是高温钢的主要合金元素。
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、 耐热钢在钢中加进铬、镍和硅能使钢耐1300℃之高温。此种钢通常用于制造产业用炉及电阻丝等。
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、不锈钢在钢中加进少量铜可延缓钢在空气中的腐蚀率。若在钢中加12％以上之铬则可避免钢之腐蚀。若再加进镍则腐蚀性更好，且进步钢之勒性。目前食品产业及化学产业正广泛地使用不锈钢。厨房用具，餐具和外科用具也用不锈钢制造。
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、济钢一级代理工具钢的含碳量高于结构用钢，通常用于制锯条，钻头等。特殊钢则加进铬、钨、钴、钼、钒等合金元素，并经适当的热处理。
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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