Chromo's casing and tubing is the part of the highest value and the most critical requirements alloys in the API 5CT and API 5CRA. Therefore, the highest quality is the necessity. To assure the quality, we insist the principles as below:

To assure the quality of our casing and tubing is to assure the safety of oil mining for our customers in the severe condition.

With full technology and knowledge for production of our casing and tubing is to assure the quality of our products.

Continuous research and development is to improve the quality of our products and to meet customers' demand.