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螺旋焊管主要用途和直缝焊管的区别

发布时间:2019-02-14人气:19

螺旋焊管主要用途和直缝焊管的区别 .螺旋焊管主要用途:广泛用于房屋、桥梁、道路等土建工程建设。主要产地:螺旋管的生产厂家在我国主要分布在华北和东北,华北地区如首钢、唐钢、宣钢、承钢等,东北地区如西林、北台、抚钢等,这两个地区约占螺纹钢总产量50%以上。螺旋焊管广泛应用于天然气、石油、化工、电力、热力、给排水、蒸汽供热、水电站用压力钢管、火力发电、水源等长距离输送管线及打桩、疏浚、桥梁、钢结构等工程领域。质量好坏螺旋焊管的横筋细而低,经常出现充不满的现象,原因是厂家为达到大的负公差,成品前几道的压下量偏大,铁型偏小,孔型充不满。

The main use of spiral welded pipe is different from that of straight welded pipe. The main use of spiral welded pipe is widely used in civil engineering construction such as houses, bridges and roads. Major Origins: Spiral pipe manufacturers are mainly distributed in North China and Northeast China. North China, such as Shougang, Tanggang, Xuangang, Chenggang, and Northeast China, such as Xilin, Beitai and Fugang, account for more than 50% of the total output of screw steel. Spiral welded pipe is widely used in natural gas, petroleum, chemical industry, electric power, thermal power, water supply and drainage, steam heating, penstock for hydropower station, thermal power, water and other long-distance transmission pipelines and piling, dredging, bridge, steel structure and other engineering fields. The quality of spiral welded pipe is thin and low, and the phenomenon of filling is often unsatisfactory. The reason is that in order to achieve a large negative tolerance, the manufacturer has a large reduction in the first several passes of the finished product, a small iron shape and a unsatisfactory filling of the pass. 随着国民经济的发展和人民生活水平的提高,螺旋焊管已经成为国内给管道系统发展的新趋势.公司一贯信奉"质量第一,客户至上,以诚会友,科技兴企"。河北天元钢管制造有限公司的理念是"合作、创新、求进、发展"。 我本公司创办以来,一直注重对产品的质量及对高难度产品的加工管理、同时对外承接各种高难度加工生产焊管业务。实现用户最完美的价值,是我们的奋斗目标。

With the development of national economy and the improvement of people's living standards, spiral welded pipe has become a new trend in the development of domestic pipeline system. The company has always believed in "quality first, customer first, sincere friends, science and technology to thrive enterprises". The philosophy of Hebei Tianyuan Steel Tube Manufacturing Co., Ltd. is "cooperation, innovation, progress and development". Since the founding of our company, we have been focusing on the quality of products and processing management of high-difficulty products, while undertaking a variety of high-difficulty processing and production of welded pipe business. It is our goal to realize the most perfect value of users.

螺旋焊管与直缝焊管的区别

Difference between Spiral Welded Pipe and Longitudinal Welded Pipe

直缝埋弧焊管是用钢板生产的,而螺旋焊管是用热轧卷板生产的。热轧带钢机组轧制工艺具有一系列的优点,具有获得生产优质管线钢的冶金工艺能力。例如,在输出台架上装有水冷却系统以加速冷却,这就允许使用低合金成分来达到特殊的强度等级和低温韧性,从而改进钢材的可焊性。但这一系统在钢板生产厂基本没有。卷板的合金含量(碳当量)往往低于相似等级的钢板,这也提高了螺旋焊管的可焊性。

Longitudinal submerged arc welded pipe is made of steel plate, while spiral welded pipe is made of hot rolled coil plate. The rolling process of hot-rolled strip mill has a series of advantages. It has the metallurgical ability to produce high quality pipeline steel. For example, a water cooling system is installed on the output bench to accelerate cooling, which allows the use of low alloy components to achieve special strength grades and low temperature toughness, thereby improving the weldability of steel. But this system is basically not available in steel plate factories. The alloy content (carbon equivalent) of coiled sheets is often lower than that of similar grade steel sheets, which also improves the weldability of spiral welded pipes.

更需要说明的是,由于螺旋焊管的卷板轧制方向不是垂直钢管轴线方向(其夹解取决于钢管的螺旋角),而直缝钢管的钢板轧制方向垂直于钢管轴线方向,因而,螺旋焊管材料的抗裂性能优于直缝钢管。

More importantly, because the rolling direction of spiral welded pipe coil is not perpendicular to the axis of the steel pipe (its clamping depends on the spiral angle of the steel pipe), while the rolling direction of the steel plate of the straight welded pipe is perpendicular to the axis of the steel pipe, the crack resistance of the spiral welded pipe material is better than that of the straight welded pipe.

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