Oil casing  is a kind of large diameter pipe to hold oil and gas well walls or holes. The casing is inserted into the hole and secured with cement to help separate the rock formation and prevent the hole from collapsing while keeping drilling mud circulating to facilitate drilling and production. Steel grade of oil casing: H40, J55, K55, N80, L80, C90, T95, P110, Q125, V150, etc.

 Processing form of casing end: short round thread, long round thread, partial trapezoidal thread, special buckle, etc. It is mainly used to support the good wall during the drilling process and after the completion of the well, so as to ensure the normal operation of the drilling process and the whole well after the completion. 

The important position of oil pipe industry is a large number of the use of oil pipe industry, oil pipe in oil industry occupies a very important position: 1, oil pipe consumption is large, spend more money, save expenses, reduce the cost potential is huge. The consumption of good pipes can be calculated on the basis of the number of feet drilled per year. According to the specific situation of our country, we need 62kg of good pipe, 48kg of the casing, and 10kg of tubing, for every 1m drilling in general. Drill pipe 3kg, drill collar 0.5kg; 2. The mechanical and environmental behavior of the oil pipeline has an important impact on the application of advanced technology and the increase of production in the petroleum industry; 3. The failure loss of oil pipes is huge, and their safety, reliability, and service life are of great importance to the oil industry.

Cangzhou Shenlong Pipe is a qualified supplier of PetroChina and BP Oil. Its products are widely used in oil and petrochemical projects all over the world. It is a reliable producer.