the question "shall i use erw or seamless pipes for my project?" is coming up over and over.each of the two has different advantages and disadvantages, which should be pondered to take a proper decision: seamless pipe vs erw pipe:1. appearancethe outer surface defects of the blanks used in seamless

according to the manufacturing method, steel pipes can be divided into two categories: seamless steel pipes and welded steel pipes. among them, erw steel pipe is the main variety of welded steel pipe. today, we mainly talk about two kinds of steel pipes used as raw materials for oil casing: seamless

the difference between seamless steel pipe and welded steel pipe: 1) different production processseamless steel pipe: a steel pipe that is perforated from a whole round steel and has no welds on the surface.welded steel pipe: a steel pipe with seams on the surface that is formed by bending and defor

the uneven wall thickness of the thick-walled seamless steel pipe is mainly reflected in the phenomenon of uneven spiral wall, uneven linear wall, and thick and thin walls at the head and tail.the cause of the uneven thickness of the spiral thick-walled seamless steel pipe is the uneven wall thickne

if the seamless steel pipe is corroded, it will affect the application of the steel pipe and increase the economic cost. the corrosion of the seamless steel pipe can be divided into four types, which will be introduced in detail next.1. intergranular corrosion. it refers to corrosion along dislocati