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  • Talk about Stainless Steel Tubing- Stainless Steel Tubing

    谈谈不锈钢管-不锈钢管

    不锈钢管是一种坚固耐用的材料，可用于结构用途，耐腐蚀，几乎不需要维护。不锈钢管的直径和种类根据应用要求和使用方式而有所不同。对于大多数人来说，管道和管材是相同的，这导致人们对这两种产品的使用产生了一定程度的混淆。由于这两种产品的横截面都是圆形，因此人们认为它们具有相同的功能。与管子不同，管子有多种形状，如方形、矩形和圆形。管道和管材之间的主要区别之一是它们的使用方式。管道是一种用于输送气体和液体的运输机制，而不是用于结构用途。它通过内径 (ID) 来测量。管材用于结构用途，通过外径和壁厚来测量。
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  • Seamless Mechanical Tube-Stainless steel pipe

    Seamless Mechanical Tube-Stainless steel pipe

    Abbreviated ERW, this is a format that signals a specific welding process – actually two processes, spot and seam welding. This process involves several specific steps where the steel is unwound and trimmed, then passed through rollers to cold-form the steel into the proper shape (circular, square or rectangular).From here, the edges are forced together into a butt joint, then welded at a very high temperature to form a flash weld. Once the weld is tested, the tube passes through various sizing rolls to achieve the proper size, and then the length is cut. The materials used here will generally be available in both hot-rolled and cold-rolled formats.
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  • how are steel tubes made-Welded Steel Pipe-ERW Steel Pipe

    how are steel tubes made-Welded Steel Pipe-ERW Steel Pipe

    The use of steel pipes was started by a Scottish inventor in 1815 connecting the tubes to convey gas for lights. In 1836, the United Kingdom had a patent for the production of seamless steel pipes by the extrusion method, but it was not until 1885 that the German Mannismann brothers invented the process of directly producing seamless pipes from bar steel. The Mannismann brothers first invented the second in 1885. The roll cross-rolling piercing machine, invented the periodic tube rolling machine in 1891, and in 1903, the Swiss R Stiefel (RCStiefel) invented the automatic tube rolling machine (also known as the head-type tube rolling machine). Later, continuous tube rolling appeared All kinds of extension machines, such as machine and pipe jacking machine, began to form the modern seamless steel pipe industry.
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  • What is Stainless Steel Tubing?-Stainless steel pipe

    什么是不锈钢管？-不锈钢管

    不锈钢管是一种坚固耐用的材料，可用于结构用途，耐腐蚀，几乎不需要维护。不锈钢管的直径和种类根据应用要求和使用方式而有所不同。对于大多数人来说，管道和管材是相同的，这导致人们对这两种产品的使用产生了一定程度的混淆。由于这两种产品的横截面都是圆形，因此人们认为它们具有相同的功能。与管子不同，管子有多种形状，如方形、矩形和圆形。管道和管材之间的主要区别之一是它们的使用方式。管道是一种用于输送气体和液体的运输机制，而不是用于结构用途。它通过内径 (ID) 来测量。管材用于结构用途，通过外径和壁厚来测量。
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  • Manufacturing Method of Seamless Pipe-ERW Steel Pipe

    无缝管-ERW钢管的制造方法

    无缝管的生产方法大致分为斜轧法（门内斯曼法）和挤压法。前一种方法是先用斜轧辊将管坯穿孔，然后用轧机将其延伸。这种方法生产速度快，但对管坯的机械加工性要求较高，主要适用于碳素钢和低合金钢管的生产。后一种方法是先用穿孔机将管坯或钢锭穿孔，然后用挤压机将其挤压成钢管。这种方法的效率比斜轧法低，适用于生产高强度合金钢管。斜轧法和挤压法都必须先将管坯或钢锭加热，生产出来的钢管称为热轧管。用热加工方法生产的钢管有时可以根据需要进行冷加工。
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  •  Comparison of Hot Rolled & Cold Rolled SS Steel Pipe-ERW Steel Pipe

     Comparison of Hot Rolled & Cold Rolled SS Steel Pipe-ERW Steel Pipe

    Hot rolled seamless steel pipe can damage the casting structure of the steel ingot, refine the crystal grains of the steel, and eliminate the defects of the microstructure. In this way, the steel organization is compacting and the mechanical properties would be improved.This improvement is reflected in the rolling direction, so that the steel is no longer isotropic to a certain extent; bubbles, cracks and looseness formed during casting can also be welded under high temperature and pressure.
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  • Stainless steel pipe-a500 erw steel pipe tubes factories

    不锈钢管-a500 erw钢管工厂

    一般无缝钢管的生产工艺可分为冷拔和热轧两种，冷轧无缝钢管的生产工艺一般比热轧复杂，在定径试验时，如果表面没有反应裂纹，就必须用切割机切割管子，切成一米左右长度的毛坯，然后进入退火工序，退火需要用酸性液体进行酸洗，酸洗的时候要注意表面是否有大量的起泡现象，如果有大量的起泡现象，说明钢管的质量不符合相应的标准，在外观上，冷轧无缝钢管比热轧无缝钢管要短，冷轧无缝钢管的壁厚一般比热轧无缝钢管要小，但是表面看上去比厚壁无缝钢管要光亮很多，粗糙度要高，没有太多的毛刺。
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  • Exploring the welded tube making process-Welded Steel Pipe

    探索焊管制作工艺-焊接钢管

    通常使用四种不同的焊接工艺来制造管材。由于这些焊缝中没有填充金属，因此焊缝至少与母材一样坚固。高频 (HF) 焊接。如今，大多数低碳钢和铝管都使用 HF 焊机进行焊接，如果管材用于装饰用途，这种焊机也适用于 400 系列不锈钢，甚至 300 系列。近 95% 的 HF 焊机都是固态的，使用晶体管产生交变频率电流。已经开展了研究，以焊接直径小于 1/4 英寸的产品，并扩展焊机在高线速下对 300 不锈钢进行压力质量焊接的能力。
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  • Methods Of Manufacturing Steel Tubes And Pipes-ERW Steel Pipe

    Methods Of Manufacturing Steel Tubes And Pipes-ERW Steel Pipe

    Billet-Heating-Mannesmann piercer-Elongator-Plug mill-Reeler-Reheating-SizerWhen a seamless pipe is made by rolling, the rolling method involves piercing the material while it is being rolled, and is suitable for mass production. The figure shows the manufacturing process used in the Mannesmann plug mill, which is a typical rolling process. The Mannesmann-type piercer reduces the material by rolls that are inclined obliquely to each other. When the round billet is rotated while being compressed in the diametric direction, the central part of the billet becomes loose, which makes it easy to pierce a hole through the center. This is called the Mannesmann effect. The pierced portion is expanded by the elongator, and the wall thickness is then thinned and elongated by the pug mill. The internal and external surfaces are smoothed by the reeler, and the final dimensional adjustments are made by the sizer.
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