... .To Bolivia,Indonesia,Russia,South America,ect N80 API oil casing pipe Advantage1. High precision in size and shape2. Good low ... ,STC,BTC3) Steel grade: J55, K55, L80, N80, P110 type of oil casing pipe thread 1.OD: 10.3-1219.2mm 2 ... .WT: 1.24-60mm 3. Material:Carbon Steel Q235 type of casing pipe thread Thickness1.24-60mmOut diameter10.3-1219.2mmLength6000-12000mmStandardAISI ...