ASTM steel pipe, containing seamless and welded steel tube like ERW steel pipe, is a big family. We can even make a list for more than 20 kinds of standards for customers. Thus, you can have a try in this kind of pipeline if you just need to purchase relative pipes for next project.
The list bellow has explained the application of those steel pipes for us clearly. Generally speaking, their main function would focus on heat exchangers, high-pressure service-boiler, automotive industry and mechanical treatment, machine parts and general use. Of course, among these pipelines, A53 would be a common type for customer's choice. you can have a try if you are interested in it too.