N80 petroleum casing manufacturer

N80 petroleum casing manufacturer, N80 long round buckle oil casing (Manager Wu: 18333440848 QQ: 3024587634) Long Cangzhou Pipe Co., Ltd. specializes in producing long round buckle oil casing N80, N80 petroleum casing factory direct price advantage, the company has modern casing production line 2, a coupling production line, anti-corrosion product line, and equipped with advanced detection equipment, machine φ139.70mm-φ339.72mm various steel grades, long round thread of various thickness, short round thread, buttress type thread and special deduction, the annual production capacity of 100,000 tons OCTG mainly used to transport oil and gas well drilling and oil and gas. It includes oil drill pipe, casing, tubing pumping. Oil drill pipe used to connect the drill collar and drill bit and drilling power transfer. Oil casing is mainly used to support the rear of the wall during drilling and completion, and after completion to ensure the normal operation of the entire drilling process wells. The main pipeline pumping oil at the bottom of the oil and gas transport to the surface. Oil well casing is run to maintain a lifeline. Due to different geological conditions, underground complex stress state, pulling, pressing, bending, torsional stress acting on the combined effect of the tube, which is the quality of the casing itself made a higher demand. Once the casing itself is damaged for some reason, it could lead to the whole production wells, or even scrapped. According to the strength of the steel casing itself can be divided into different grade, namely J55, K55, N80, L80, C90, T95, P110, Q125, V150 and so on. Well conditions, depth of different steel grades used are different. In a corrosive environment also requires the casing itself has corrosion resistance. In complex geological conditions where the sleeve has also asked the collapsing performance. Japan, Romania, the Czech Republic, Italy, Britain, Austria, Switzerland, the United States, Argentina, Singapore also imports. Standard import more to the American Petroleum Institute Standard API5A, 5AX, 5AC. Steel grade is H-40, J-55, N-80, P-110, C-75, C-95 and the like. Specifications mainly 139.77.72R-2,177.89.19R-2,244.58.94R-2,244.510.03R-2,244.511.05R-2 and so on. (2) API predetermined length, there are three: the R-1 is 4.88 ~ 7.62m, R-2 is 7.62 ~ 10.36m, R-3 is 10.36m to be longer. (3) of the imported goods marked with LTC words, that the filaments buckle casing. (4) imported from Japan, in addition to using API standard casing, there is a small part of the implementation of the Japanese factory standards (such as Nippon Steel, Sumitomo, Kawasaki, etc.), steel is NC-55E, NC-80E, NC-L80, NC-80HE like. (5) In the case of a claim, there have been black buckle, threaded injury, tube folding, broken buckle and thread standoff ultra-poor, ultra poor coupling J value the appearance of defects and brittle casing, yield strength and low intrinsic quality problems.