API 5CT Grade OCTG N80-1 Seamless Casing Tubing Oil Drill Rod Well Drill Steel Casing Pipe Price Casing Tube Supplier
API 5CT N80 casing Tubing serves to transport both crude oil and natural gas from Oil and Gas layer to the surface pipeline after drilling is completed. It is able to bear the pressure produced by the exploitation process. After the outer surface is coated with a protective layer, the tubing is marked in accordance with…