Application for large diameter steel pipe

There are numerous kinds of steel pipes for each kind of engineering project. And we would like to categorize them according to their function as oil pipe or water pipe. Of course, production process can be one standard too. Today, we would like to talk about the ERW steel pipe with large diameter. What is the large diameter steel pipe? It often refers to the out diameter with more than 1000mm. Yeah, once you see the the out diameter is large than 1000mm, you can call it large diameter. Which kind of situation would we adopt large diameter steel pipe? It has generally more widely, generally used for large-scale pipeline projects, water gas engineering, pipe network construction of large projects.