API 5CT oil casing: 1) The OD:4 1/2" to 20" 2) Grade: H40~Q125 3) Connection: plain end,BTC,LTC,STC Item O.D. I.D.Wall thickness Grade In mm In mm mm14-1/2114.304.000101.606.35J55,K55,N80,L80,P1103.92099.577.37J55,K55,N80,L80,P11025127.004.408111.967.52J55,K55,N80,L80,P1104.276108.619.29J55,K55,N80,L80,P1104.126104.8011.10J55,K55,N80,L80,P11035-1/2139.704.892124.267.72J55,K55,N80,L80,P1104.778121 ...