LSAW Steel Pipe

　　1, High-quality seamless pipes of uniform composition, high cold shear tonnage, smooth and neat end face of the cutting head, and inferior materials due to the poor material, cut the first end surface there are often off the meat of the phenomenon that is uneven, and no metallic luster. And because of inferior materials manufacturers cutting products less head, head and tail will be a big ears. 　　2, Inferior seamless pipes without metallic luster, pale red or similar color of pig iron, there are two reasons for it blank is adobe. Inferior-rolling temperature is not standard, they are visually steel temperature, so can not be carried out according to the provisions of the austenitic region of rolling, thick-walled seamless performance naturally can not be reached. 　　3, Thick-walled seamless Inferior material containing impurities, the density of steel is small, and size tolerance serious, so without a vernier caliper case, you can check it weighed. 　　4, Thick-walled seamless pi...