From their definition, we can see that one has no gaps and the other has gaps. And the seamless steel pipe can be seen from the outer surface, there is no gap in the whole body; the welded steel pipe has a welding gap. The price of seamless steel pipes is generally higher than that of welded steel p

In recent years, my country's ERW tube mill line production has developed rapidly. According to relevant information, there are more than 1,600 sets of various welded pipe production lines, with an annual production capacity of 7 million tons, and product specifications ranging from 8mm*1mm to 508mm

First of all, the welded pipe process is an important link in the ERW High Speed Tube Mill production line, which can directly affect the quality of the products produced. The production process depends on the product variety. From raw materials to finished products, a series of processes are requir