Different steel pipe, both seamless pipes and welded tube like ERW steel pipe, will be applied in various situations. There will be different steel pipeline’s standards in the pipe field for multifarious usage.

Thus, there are different demands for pipes. It is very important to know what's your application before ou inquiries. Here, we would like to compare three tubes from standard aspect.

API 5L: PSL 1and PSL 2 would be the normal type for this category. Whether seamless or welded type, API 5L can meet our demands with international standard requirements.

ASTM A53: Another popular steel pipe among engineering project. It contains from pipe, steel, black, hot-dipped and zinc-coated, welded and seamless. Generally speaking, customers will use them among mechanical and pressure applications.

EN10219: Used for cold formed welded structural hollow sections of non-alloy and fine grain steels, this type tube is also popular among clients.