API 5CT 石油套管 尺寸:1"--20" Wall Thickness:2.87-22.22mm Thread:PTC,STC,LTC,BTC Grade:J55,K55,N80,L80,P110 H40,M65,C95,C90,T95,Q125 Standard:API 5ct ISO9001 证书:API 5CT,ISO9001 长度:R1 R2 R3 包装:出口标准包装，钢带打捆
