7 Inch API 5CT Casing|Best selling oilfield seamless casing

7 inch (177.8mm) casing is a widely used production casing under API 5CT standard for oil and gas wells.

Manufactured as seamless steel pipe, this casing supports wellbore stability, prevents collapse and isolates different underground formations.

Available steel grades include N80, L80 and P110. Thread options cover STC, LTC and BTC buttress thread to meet various downhole pressure requirements.

With sufficient inner diameter, it reserves space for stimulation and workover operations. It is suitable for medium pressure and slightly corrosive well conditions.

Ruijian Petroleum Equipment supplies full-range seamless casing with complete material test certificates. Custom lengths and special threads are available for global oilfield projects.