What’s the oil casing used for?
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Oil casing can be divided into different steel grades according…
Classification and use of oil casing
Surface casing1、Used to seal the upper unstable loose, collapse-prone …
Can I buy a second-hand oil casing?
In the overlapping area of coal and oil and gas resources, due…
Petroleum casing heat treatment to improve toughness
Petroleum casing emerged not only for oil extraction but also…
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