API 5CT ERW Casing Pipes OCTG Casing
Out Diameter 1.9"-4 1/2"
Wall Thickness 3.18 - 16 mm
Length R1/ R2/ R3
Ends BTC, UN, EUE, and Premium ends
Usage Oil and Gas
Surface Red, Black, Varnish, Oil, 3PE, etc
OCTG means Oil Country Tubular Goods, which refers to steel used in oil and gas extraction and production processes, including Drill pipe, Casing, Tubing, Couplings, Connections and Accessories, for the oil and gas industry on land and offshore. API 5CT is standard technical specifications for steel casing and tubing pipes used for oil wells in petroleum and natural gas industries. Casing and Tubing is a kind of OCTG pipe.
Tubingis used to carry petroleum from the well’s depths to the surface. This is the third phase of the wellbore process. Oil and gas occasionally self-elevate to the surface; however, pumps are typically required to bring the fluids to the surface. Besides the 4 1/2-inch diameter, tubing is normally smaller in diameter than casing. Consequently, tubing must be affixed to external support structures, such as a rig or platform, in order to prevent collapse due to pressure differentials.
Note: Some of the main specifications are shown below, please contact us for more details.
Outside Diameter (O.D) | THICKNESS （TK） | Weight | End processing form | ||||||||
Grade | |||||||||||
Inch | mm | Inch | mm | TBG | UPTBG | J55 | L80-1 | N80 | C90 | T95 | P110 |
1.900" | 48.26 | 0.145 | 3.68 | 2.75 | 2.9 | PNUI | PNUI | PNUI | PNUI | PNUI | - |
2 3/8" | 60.32 | 0.254 | 6.45 | 5.8 | 5.95 | - | PNU | PNU | PNU | PNU | PNU |
2 7/8" | 73.02 | 0.308 | 7.82 | 8.6 | 8.7 | - | PNU | PNU | PNU | PNU | PNU |
3 1/2" | 88.9 | 0.289 | 7.34 | 10.2 | - | PN | PN | PN | PN | PN | PNU |
4" | 101.6 | 0.262 | 6.65 | 10.7 | 11 | PU | PU | PU | PU | PU | - |
4 1/2" | 114.3 | 0.271 | 6.88 | 12.6 | 12.75 | PNU | PNU | PNU | PNU | PNU | - |
