The main products of our company are the oil casings and oil pipelines. We�??�?� not only supply our goods with many large oil fields, but also establish a long-term business relationship with the Middle East Europe, Africa and other countries around the world and co-operative very well. The implemental standards for the oil casings are API �?�¯�?�¹�?� 5CT; the specifications include from 60.3 to 508; the steel grades include J55, K55, N80, L-80, P-110, C-90, C - 95, T-95 and so on; the merchantable claspers are STC , LC, BC , VAM etc.�??�?�  The implemental standards for the oil pipelines are API �?�¯�?�¹�?� 5L; the specifications include from 219.1 to 2032; the steel grades include Gr.B, X42, X46, X56, X60, X70, X80 and so on.