Customization: | Available |
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After-sales Service: | 24 Hours Service |
Warranty: | 1 Year |
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API 5CT Certified L80/J55/K55/N80 ERW Oil Casing Tube | High-Quality for Oil & Gas Wells
Oil casing is a large diameter pipe that serves as the structural retainer, it can protect both subsurface and well bore from collapsing and allow drilling fluid to circulate and extraction.
Material | J55,K55,L80,N80,P110 |
Size | 2-1/2" ,4 1/2",5 1/2",6 5/8",7" ,9 5/8" to 20" / Outside Diameter 60mm to 508 mm |
Wall thickness | 4-16mm |
Length | R1(4.88m-7.62m)/R2(7.62m-10.36m)/R3(10.36m-14.63) |
Coupling | BTC (Buttress Thread Coupling), STC (Stub(Short) Thread Connector), LTC (Long Thread Connector) NUE/EUE or no thread |
Standard | API spec 5CT |
Certificates | API5L, ISO 9001:2008, BV,CCIC |
Surface Treatment | External surface coating (black painted), mark as api 5ct stanard,varnish, oil |
Oil casing/tube is widely used in the mechanical treatment field, petrochemical industry, transport and construction field, ordinary structural purposes and mechanical structural purposes, for example, in the construction field, fulcrum bearing etc.
During the process, we have a rigorous quality control system, which includes:
• Chemical composition and mechanical
• Thread inspection
• Hydrostatic test.
Pipes are rolled onto a hydrostatic testing machine where water is pumped into the pipes to ensure that the pipes can withstand the requisite internal pressure and to confirm that there is no leakage.
• Drifting test.
To inspect the straightness of the pipes and to determine if any protrusions exist along the inner walls
• Hardness and pressure test.
To ensure that the pipes can withstand the requisite external pressure and exhibit the required hardness before final coating.
• size and surface test
To make sure that there are no visible defects and conforms to the intended parameters and lengths.