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镀锌钢管建设中的特点介绍

来源:http://www.jnxxjm.com/

【 发布于:2018-09-17 19:56:01 】


中国镀锌钢管生产发展回顾 20世纪40年代初,日本商人经营的中国鞍山钢铁公司,国第一台热轧镀锌钢管机正式建成投产。抗日战争胜利后,无缝钢生产设备由前苏联拆迁回国。20世纪50年代,鞍钢从前苏联重新引进了新设备重建投产,当前设计年产能力6万吨,鞍钢恢复生产三大重大工程之一,也是那个时期国内唯一的热轧镀锌钢管机组。之后,国内,曾建起一批国产直径76mm镀锌钢管机,但由于技术很落后、规格很少,产量也十分低。

China's galvanized steel pipe production and development review in the early 1940s, Japanese businessmen operating China's Anshan Iron and Steel Company, China's first hot-rolled galvanized steel pipe machine formally completed and put into operation. After the victory of the war of resistance against Japan, the production equipment of seamless steel was repatriation from the former Soviet Union. In the 1950s, Anshan Iron and Steel Co. reintroduced new equipment from the former Soviet Union to rebuild and put into operation. At present, the designed annual production capacity of Anshan Iron and Steel Co. is 60,000 tons. It is one of the three major projects to restore production in Anshan Iron and Steel Co. and the only hot-rolled galvanized steel pipe mill in China at that time. Since then, a number of domestic 76mm diameter galvanized steel pipe machines have been built, but because of backward technology, few specifications, the output is very low.

20世纪80年代,改革开放的春风吹响中国大地,上海的宝山钢铁公司,建成国内第一台镀锌钢管直径140mm限动芯棒连轧管机,当时的设计年产能力为50万吨。20世纪90年代初,国镀锌钢管生产机组进入了大发展时期,陆续在国内建成了天津镀锌钢管公司、成都镀锌钢管和衡阳华菱钢管公司厂等三个国内有影响力的镀锌钢管生产基地。宝钢股份是当前我国最大、现代化程度最高的钢铁联合企业,也是全球最具竞争力的钢铁企业之一。

In the 1980s, with the spring breeze of reform and opening up, Baoshan Iron and Steel Co., Ltd. of Shanghai, built the first domestic mandrel mill with a diameter of 140 mm for galvanized steel pipes. The designed annual production capacity was 500,000 tons. In the early 1990s, China's galvanized steel pipe production units entered a period of great development. Three influential galvanized steel pipe production bases, Tianjin Galvanized Steel Pipe Company, Chengdu Galvanized Steel Pipe Company and Hengyang Hualing Steel Pipe Company, were established in succession in China. Baosteel is the largest and most modernized iron and steel complex in China, and one of the most competitive iron and steel enterprises in the world.

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二、中国镀锌钢管生产线建设特点 一是产量高速增长。中国已成为世界第一大镀锌钢管生产国,1993年开始,国生产能力达到284万吨,超过俄罗斯,成为世界无缝管第一大生产国,并一直保持至今。2000年以来,中国无缝管产量高速增长,从414.8万吨增加到2009年的2178.6万吨。仅宝钢股份公司,年产钢就达1100多万吨,专业生产的国际一流水平的高技术含量、高附加值冷、热轧和镀锌钢管等优质产品广泛应用于国内外汽车制造、家电生产、石油开采、管道输送等领域。

Two, the construction of galvanized steel pipe production line in China is characterized by rapid growth in output. China has become the world's largest producer of galvanized steel pipes. Since 1993, China's production capacity has reached 2.84 million tons, surpassing Russia, becoming the world's largest producer of seamless pipes, and has been maintained until now. Since 2000, the output of seamless pipe has increased rapidly from 4 million 148 thousand tons to 21 million 786 thousand tons in 2009. Baosteel Co., Ltd. alone produces more than 11 million tons of steel annually. It specializes in producing world-class high-tech, high-value-added cold, hot-rolled and galvanized steel pipes and other high-quality products, which are widely used in automobile manufacturing, household appliances production, petroleum exploration, pipeline transportation and other fields at home and abroad.

二是装备水平先进。2000年后,中国镀锌钢管生产线转型升级的步子越来越大,基本上都采用了当代最先进装备建成。例如,2003年,天津镀锌钢管公司研制生产了全世界第一台PQF三辊连轧机,这个设备随后在国内及全球得到广泛的推广和应用。现在国还开始普遍采用锥形辊穿孔机、集中变形辊设计、轧辊全液压压下技术、限动芯棒轧制、轧辊单传动、阶梯芯棒轧制等国际先进技术。

Two, advanced level of equipment. After 2000, the transformation and upgrading of China's galvanized steel pipe production line has become more and more rapid, basically using the most advanced contemporary equipment. For example, in 2003, Tianjin Galvanized Steel Tube Company developed and manufactured the world's first PQF three-high continuous rolling mill, which was subsequently widely promoted and applied both at home and abroad. At present, China has also begun to generally adopt such international advanced technologies as conical roller piercing machine, centralized deformation roller design, full hydraulic roll reduction technology, limited mandrel rolling, single roller drive, step mandrel rolling and so on.

三是生产基地专业化。国的镀锌钢管生产基地逐步走上了专业的轨道,例如:天津无缝,成都无缝,衡阳无缝等国内生产公司,无论是原料、炼钢、精炼连铸、轧制,还是精整、检化验、热处理等研发工作,都是围绕镀锌钢管生产进行,这对生产效率、质量提高和新产品开发都起到十分重要的作用。特别是国内的许多联合企业,一般都采用了从炼钢到成品的专业化的镀锌钢管生产线。四是产品种类丰富。大口经镀锌钢管不再成为短缺品种,依赖进出口的高端产品大量减少。直径小到21.3mm大到720mm镀锌钢管,国都可以自己生产,除了深井钻管,底管,高压锅炉管,高强度管线管等极少数的产品外,其它产品我可都可以自主供给,无缝管进口量从2006年逐年下降,由69.4万吨下降到2009年的34.9万吨。

The three is the specialization of production bases. China's galvanized steel pipe production base is gradually on a professional track, such as: Tianjin seamless, Chengdu seamless, Hengyang seamless and other domestic production companies, whether raw materials, steelmaking, refining and continuous casting, rolling, or finishing, inspection and testing, heat treatment and other research and development work, are all around the galvanized steel pipe production, which is effective for production. Rate, quality improvement and new product development all play a very important role. In particular, many domestic conglomerates generally adopt specialized galvanized steel pipe production lines from steelmaking to finished products. The four is the rich variety of products. The big mouth galvanized steel pipe is no longer a shortage variety, and the high-end products which rely on import and export are greatly reduced. In addition to a few products such as deep-well drilling pipes, bottom pipes, high-pressure boiler pipes and high-strength pipeline pipes, other products can be supplied independently. The import of seamless pipes has declined year by year from 694,000 tons in 2006 to 349,000 tons in 2009.

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