Casing is a special tubular product for oil (gas or water) extraction. The product complies with API Spec 5CT Specification for Casing and Tubing, API Spec 5B Specification for Threading, Gauging and Thread Inspection of Casing, Tubing and Ling Pipe Threads and other relevant standards. The using API symbol for this product has been received. Our company produces different kinds of oil casing of steel grade H40, J55, N80, L80, C90, T95, P110 and Q125.
Tubing are special pipes developed for oil (gas, water) wells and fields, is used to export and transmit the oil (gas, water) from such oil (gas, water) wells to the outside. Products comply with Specifications on Casing and Tubing (API Spec 5CT), Specifications on Processing, Measuring and Inspecting Casing, Tubing and Threads (API Spec 5B) and other related standards, and have acquired the authorization to use Official API Monogram