special section tubes

API(American Petroleum Institute),API 5L Line Pipe,API 5D

The American Petroleum Institute, commonly referred to as API, is the largest U.S trade association for the oil and natural gas industry.[……]

Read more …

ASTM standard classifications for Steel

The American Society for Testing and Materials (ASTM) was established in the 1800s to work with the steel mills in Pennsylvania to regulate the production of steel used in the nation’s industrial revolution.[……]

Read more …