OCTG main products include casing.tubing.drill pipe, drill collar, heavy weight drill pipe.slotted pipe, coupling and pup joint.
(1)Casing is a large-dlameter plpe that serves as the structural retainer for the walls of olland gas wells, or well bore. stze OD 4 1/2" 20" (114.3mm ~ 508mm); WT: 0.205" ~ 0.635" (5.21mm ~ 16.13mm); LENGTH: R1, R2, R3
(2) Tubing The tubing is a pipeline that transports crude oll and natural gas from the oil and gas layerto the surface after driling is
completed. It is used to withstand the pressure generated during the mining process Used for the Transmission of Oil & Gas
(3)Drill plpe Olldrlng plpes are made by geological drling steel by hot rolling or cold drawing. Grade: E75. X95. G105. S135. Manly used for oil and gas exploitation.
(4)Drill Collars Standard API SPEC 7-1,Steel grade:AIS 4145H,Sizes:3 1/8" -11,Connected Type:NC, IF, REG,Length.30 - 31 ft 6ft.
Type of design: (1) plain, (2) with a recess of the elevator, (3) wth a recess of the elevator and power slips: (4) spiral and a wide range of type mixtures.
(5)Heavy Weight Drill Pipe Standard:API 5DP. API SPEC 7-1, Grade:API 5DP Grade DZ50, E75, R780, X95, G105, S135 Sizes 2 3/8', 2 7/8, 3 1/2" 4, 4 12", 5, 5 1/2" up to 6 5/8" Range of Thickness: 6.5mm to 12.7mm. or cutomized, Connection threads NC26, NC31, NC38, NC40, NC46, NC50, 5 1/2FH.6 5/8FH, Length:R1, R2, R3