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The casing string in the hole drilling, used to prevent the formation of formation fluid flow and collapse.
The tubing string into the production casing, components of underground reservoir and the ground channel, control of crude oil and natural gas flow.
The Product Standard: API SPEC 5CT9thPSL1; PSL2; PSL3;
Size:1"9~13-3/8"
Grade:H40,J55,K55,N80,L80,R95(C95),T95,P110,Q125
OCTG Casing Manufacture API 5CT N80 BTC STC LTC
Catalog: Oil Pipes, API 5CT Steel Pipe, J55, K55, L80, N80Q,C90,T95,P110 Oil/Petroleum Casing Pipe, OCTG
1) Grade: J55,K55,L80,N80Q,C90,T95,P110 ,Q125
2) Size: 4 1/2", 5", 5 1/2", 6 5/8", 7", 7 5/8", 9 5/8", 10 3/4", 13 3/8", 16", 18 5/8", 20"
3) Wall thickness: 5.51 - 25.4 mm
4) Thread type: STC, LTC, BTC,NON-API THREAD
5) Length: R1, R2, R3
6) All our casings accord with API 5CT standard, and we get the right to use the API 5CT LOGO.