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OIL CASING TUBE Specifications 1.Standard:API-5CT ISO9001:2000 2.Material :J55/K55/N80/L80/P110 API 5L PLS1:A25 A B X42 X46 X52 X56 X60 X65 X70 PLS2 :B X42 X46 X52 X56 X60 X65 X70 X80 3.Length: R1,R2 ...