2024-02-22
ERW Steel Pipe-Difference between erw and seamless pipe
There are two benefits of using a seamless pipe. First, the working pressure capacity of a seamless pipe is 20% higher than an erw pipe, because, unlike erw pipes, the application of a higher pressure level will not cause the pipe to fail or burst. And the other, more popular reason for choosing a seamless pipe is that they are not vulnerable to intergranular corrosion. As opposed to seamless pipes, the seam line on welded pipes, in particular, the HAZ or heat affected weld zone gets affected at the grain boundary due to sensitization. This fosters intergranular corrosion, thereby weakening the erw pipe.