Hebei Cangzhou steel pipe manufacturer hot-rolled seamless steel pipe hot-rolled pipe advantages hot-rolled pipe disadvantages

直径：

20-910mm

壁厚：

2.0-26mm

材质：

20#

Hebei Cangzhou Steel Pipe Manufacturer Hot-rolled Seamless Steel Pipe Hot-rolled Pipe Advantages Hot-rolled Pipe Disadvantages Raw Materials Building Materials Pipes and Fittings Seamless Pipe
Cangzhou Hongyun Steel Pipe Co., Ltd. is a professional company integrating the production, sales and export of steel pipes and pipe fittings. enterprise. Our company's main products include seamless steel pipes (hot-rolled, cold-drawn), spiral steel pipes, straight-seam steel pipes, thermally expanded steel pipes, large-diameter thick-walled steel pipes, and alloy steel pipes.
After hot rolling, the non-metallic inclusions (mainly sulfides, oxides, and silicates) inside the steel are pressed into thin sheets, resulting in delamination (sandwiching). Delamination greatly deteriorates the tensile properties of the steel along the thickness direction and may cause interlaminar tearing as the weld shrinks. The local strain induced by the shrinkage of the weld often reaches several times the yield point strain, which is much larger than the strain caused by the load. Hot-rolled steel products are difficult to control in terms of thickness and edge width. We are familiar with thermal expansion and contraction. Even if the length and thickness are up to standard after hot rolling at the beginning, there will still be a certain negative difference after cooling. The wider the side width and the thicker the thickness, the more obvious this negative difference will be. Therefore, for large-sized steel, the side width, thickness, length, angle, and edge lines of the steel cannot be too precise.