Casing and Tubing

Description

API Casing Is A Special Seamless Steel Pipe, Which Is Formed By Threading And Coupling At Both Ends.Casing Is Mainly Used In Petroleum Projects, The Implementation Of The Standard Is Api 5ct Standard.The Caliber Of Casing Is Calculated Differently From Ordinary Seamless Pipe. The Length Of The Casing Is Not Fixed Because The End Of The Pipe Needs To Be Threaded And Coupling.As A Result, The Length Of The Casing Is Not Precisely Controlled. The Lengths Are Divided Into R1, R2 And R3, With R2 And R3 Being The Common Lengths.

API Tubing Is A Pipe Used Inside A Casing To Transport Oil And Gas. Because Of Its Specific Use, Its Size Is Usually Under 4 Inches. Since Sometimes It Is Necessary To Transport Oil And Gas Inside The Tubing, To Face Different Environments, The Inside Of The Tubing May Need To Be Treated With Anti-Corrosion Treatments, Such As Corrosion-Resistant Alloy (CRA) Coating.
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