Casing is used for fastening oil and gas well wall or borehole,with bigger diameter than tubing ,including surface casing,technical casings and oil layer casing . Usage: Petroleum Casting Tube, Oil Pipe, Steel tubing, Casing, Drill pipe Standard: ISO, API 5CT, API 5D, API 5L provide: size:4-1/2 5 5-1/2 6-5/8 7 7-5/8 8-5/8 9-5/8 10-3/4 11-3/4 13-3/4 13- 3/8 16 18-5/8 20 OD:114.3-508.0mm weight :9.5-133.0b/ft Thickness :5.21-16.13mm Type of end :J55/K55 M65 L80/C95 N80 C90/T95 P110 Q125
