API 5CT: J55, K55, N80, L80, C90, T95, P110, Q125,尺寸de V150: 4 1/2 " -20 "联系:BTC, STC,LTC OCTG无缝套管尺寸能力外径壁厚范围英寸毫米毫米毫米4-1/2 114.3 .2056-5/8 * 168.28.352 - .525 8.94- 13.34 7 177,8.272 - .625 6,91 - 15.88 7-5/8 193.68.328 - .750 8.33- 19.057-3/4 * 196.9 .595- .625 15.11 - 15.88 8-5/8 *[…]