API 7-1 Drilling Rig HWDP Integral Spiral Heavy Weight Drill Pipe . Description of heavy weight drill pipe . Integral heavy weight drill pipe is manufactured from AISI 4142H-4145H modified drill collar material according to SY/T 5146-1997,thick-walled pipe called integral heavy weight drill pipe was developed to provided a
The fishing tools are produced and inspected strictly under API Spec 7, including Safety Joint , Fishing Magnet, Overshots, Releasing Spear, Fishing Jar (3 1/2 " to 9 1/2 " OD), Fishing Multifunction, Casing Spear, Taper Taps, Die Collars, Jar Intensifier (3 1/ 2 " to 9 1/2 " OD), Junk Sub, Hydraulic Junk Retriever, Mill Casing Cup Tester / Test Plug For Casing Pressure Testing Reasonable Price Drill Pipe 2 3 8 Pup Joint For Oil Tubing Casing cup tester/casing pressure test plug is designed to be attached to the drill string and then lowered into the casing beneath the wellhead to pressure test the blowout preventer stack and the wellhead. When the cup tester is lowered into the casing beneath the wellhead, pressure is applied to
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2 . minimizes heat stress on caing and cement mantle, protect the casing from damage by high temperature. 3 . during oil production it will provide superior insulation and greatly reduce the loss of heat energy. Structure of pre-stressed vacuum insulation tubing Character of pre , Experts in Manufacturing and Exporting API Casing and Tubing , Petroleum Machining Seamless Steel Pipe and 86 more Products.Pup Joint