1/4 "Hydraulic control pipeline: Specification: 1/4" 0.035X (1-1000M) Material: 316L Pressure bearing: 100MPa This product is mainly used for controlling safety valves under oil and gas wells and venting valves through cable packers. Connect the 1/4 "hydraulic control pipeline to the downhole safety valve and gas valve, and control the opening and closing of the downhole safety valve and the cable packer vent valve of the oil and gas well through ground pressure. When the set pressure is reached, the downhole safety valve and the cable packer vent valve of the oil and gas well can be opened at the same time, and the oil and gas well can be produced normally. At the same time, the gas separated by the electric submersible pump can also be discharged from the annulus through the vent valve. In case of blowout or normal well closure, the pressure of the control pipeline will be released, so that the downhole safety valve and the cable packer vent valve of the oil and gas well will be closed at the same time, and the flow channels of the oil and gas well tubing and annulus will be completely blocked, ensuring the safety of the oil and gas well. Used solely for controlling underground safety valves. It can also be used for pressure control of surface safety valves and other surface valves, as well as various connecting pipelines for instrument control systems of large equipment in oil and gas field drilling and oil production. 1/8 "Hydraulic Control Pipeline: Specification: 1/80.035X (1-3500 Material: 316L Pressure: 100MPa) This product is also known as a capillary tube. It is mainly used for capillary pressure measurement in oil and gas wells. The temperature and pressure sensors (also known as downhole pressure gauges, usually nitrogen gas cylinders) are lowered into the oil and gas reservoir several kilometers deep underground with the production string of the oil and gas well. Then, the 1/8" hydraulic control pipeline (capillary tube) is connected from the temperature and pressure sensors to the surface fluorescent screen display, so that the downhole temperature and pressure can be transmitted to the surface through the capillary tube. The instantaneous temperature and pressure at the downhole oil and gas reservoir can be read out through the fluorescent screen of the surface display, thereby achieving real-time monitoring of downhole temperature and pressure. It can also be used for pressure control of surface safety valves and other surface valves, as well as various connecting pipelines for instrument control systems of large equipment in oil and gas field drilling and oil production. 3/8 "Hydraulic Control Pipeline: Specification: 3/8" X (0.035/0.049) X500M Material: 316L Pressure: 80MPa This product is mainly used for injecting chemical reagents into oil and gas wells. The 3/8 "hydraulic control pipeline will be connected to the downhole chemical injection valve, and the descaling chemical will be injected from the surface into a certain concentration of oil pipes underground through the 3/8" hydraulic control pipeline and chemical injection valve, effectively preventing the scaling of oil pipes and ensuring the normal production of oil and gas fields. It can also be used for pressure control of surface safety valves and other surface valves, as well as various connecting pipelines for instrument control systems of large equipment in oil and gas field drilling and oil production.