热轧板是以板坯(主要为连铸坯)为原料，经加热后由粗轧机组及精轧机组制成钢带，从精轧最后一架轧机出来的热钢带通过层流冷却至设定温度，由卷取机卷成钢带卷。热轧卷板通常包括中厚宽钢带和热轧薄宽钢带。其中，中厚宽钢带是其中最具代表性的品种，其产量约为热轧卷板总产量的三分之二。

Hot rolled plate is made of slab (mainly continuous casting billet) as raw material, and after heating, it is made from coarse rolling unit and refined rolling unit. The hot steel belt from the last refined rolling mill is cooled to the set temperature through laminar flow, and rolled into steel strip.Hot rolled coil usually consists of medium thick wide steel strips and hot rolled thin wide steel strips.Among them, the medium-thick and wide steel belt is the most representative variety, and its output is about two-thirds of the total output of hot-rolled coil.

热轧板主要用于冷轧基板、船舶、汽车、桥梁、建筑、机械、输油管线、压力容器、包装、电子等有关国计民生的行业，其需求与宏观经济情况紧密相连，不可分割。

Hot rolled plate is mainly used for cold rolled substrates, ships, automobiles, Bridges, construction, machinery, oil pipelines, pressure vessels, packaging, electronics and other industries related to national economy and people's livelihood, its demand is closely linked to the macroeconomic situation, inseparable.

45#热轧卷板应用于机械，未热处理时：HB≤229；热处理：正火；冲击功：Aku≥39J；强度较高，塑性和韧性尚好，45号热轧卷板淬火后没有回火之前，硬度大于HRC55（可达HRC62）为合格,经过热处理，再回火可以达到HRC42-46，这样既能保证它良好的机械性能，又能得到表面的硬度要求。

45 # Hot rolled coil for mechanical, no heat treatment: HB 229; heat treatment; heat treatment: ignition; impact work: Aku 39J; high strength, good plasticity and toughness, no. 45 hot rolled coil after quenching without tempering, hardness greater than HRC55 (reach HRC62) is qualified, after heat treatment, tempering can reach HRC42-46, to ensure its good mechanical performance, and get surface hardness requirements.

45#钢板亦是现在比较常见的建筑材料,现在市场上的45#钢板多半都是热轧而成的。45#钢板是中碳调质结构钢，45#钢板的性能是很好的，比一般的钢好很多，而且45#钢板的成本也很多，所以说45#钢板是很值得选择的。45#钢板是很牢固的，很好的装修材料。

45 # steel plate is also a more common building material now, now the 45 # steel plate on the market are mostly hot rolled.45 # steel plate is a carbon adjustable structural steel, the performance of 45 # steel plate is very good, much better than the general steel, and the cost of 45 # steel plate is also a lot, so 45 # steel plate is very worth choosing.45 # Steel plate is very firm, very good decoration material.

佛山市万庆物资有限公司常年销售承钢、首钢、鞍钢、包钢、宝钢等国内外大型钢厂；产品主营:普中板、花纹板、合金板、弹簧板、冷轧卷板、热轧卷板、低合金板、容器板、锅炉板、碳结板、耐磨板、船板、桥梁板等。展望下半年钢材市场行情走向，因为多空因素并存与不确定性因素占据市场主导，加之投机资本双向发力，因此其价格走势仍无突破方向，继续宽幅震荡。市场行情波动较大，具体价格建议电议咨询。

Foshan Wanqing Materials Co., Ltd. sells Chenggang, Shougang, Angang, Baotou steel and Baosteel; main products: general plate, pattern plate, alloy plate, alloy plate, spring plate, cold rolled coil, hot rolled coil, low alloy plate, container plate, boiler plate, carbon junction board, wear resistance plate, boat plate, bridge board, etc.Looking forward to the second half of the year of the steel market, because long and short factors coexist and uncertain factors occupy the market leading, coupled with speculative capital two-way force, so its price trend is still no breakthrough direction, continue to wide shock.Market volatility is larger, the specific price advice electricity discussion consultation.