API 5CT Tubing
API 5CT Tubing 1)API No.:5CT-1199/ISO 9001 2)Grades:API J55/K55/ N80/ L80/P110 3)OD*WT 2 7/8"-20"*2.87-22.22mm Testing NDT and pressure test and third party certication Size and surface inspection Non-destructive (magnetic flux leakage test) Thread inspection Hydrostatic test Drifting...
API 5CT Tubing
1)API No.:5CT-1199/ISO 9001
2)Grades:API J55/K55/ N80/ L80/P110
3)OD*WT 2 7/8"-20"*2.87-22.22mm
API J55;API N80;API L80 /P110
Type of thread
2 7/8"~4 1/2" (73.02~114.3mm)
Tubing is used to extracting petroleum and natural gas from a well
NDT and pressure test and third party certication
Size and surface inspection
Non-destructive (magnetic flux leakage test) Thread inspection
Physical and chemicail analysis
Hardness and pressure test.
OCTG, full name of Oil CountryTubular Goods, petroleum special pipe. It refers to a kind of steel pipe which is specially used for oil and gas exploration, most of which are seamless tubes, but the welded pipe also accounts for a considerable proportion.
Steel casing pipe generally has no specific specifications, other than the need for the material to be extremely straight and round. In some areas A.S.T.M. specifications may be required by project engineers. The specification most commonly called for is A.S.T.M. 139 Grade B. This specification gives parameters for minimum yield and tensile strength of the steel pipe being used for casing, and tolerances of straightness and concentricity.
Steel casing pipe is often specified as ASTM A-252 which is a structural grade material that does not require hydrostatic testing and the inspection requirements are not stringent and it usually costs less than other grades such as A-53, A-139 or API 5L. Used natural gas line pipe is also used as casing on many projects because it is often reclaimed in very good condition and can offer a significant cost savings when compared to new steel pipe. Used pipe is most likely to not have any testing data associated with it and is generally used when the only required specification is a given diameter and wall thickness of steel casing pipe.