| Customization: | Available |
|---|---|
| Type: | Welded Steel Pipe |
| Technique: | ERW, Hot Rolled |
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OD168.3*10.31mm API 5CT oil field casing pipe with Thread Connection
Oil casing is a large diameter pipe that serves as the tructural retainer,it can protect both subsurface and well bore from collapsing and to 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 are Widely used in the mechanical treatment field, petrochemical industry, transport and construction field,ordinary structural purposes and mechanic structural purposes, for example in construction field, fulcrum bearing etc.
During the process, we have rigorous quality control system ,it includes:
• Chemical composition and mechanical
• Thread inspection
• Hydro static test.
Pipes are rolled onto a hydro static 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 exhibits the required hardness before final coating.
• size and surface test
to make sure that there are no visible defects and conform to the intended parameters and lengths
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