It consists of an inner tube and an outer tube, filled with an inert gas of appropriate pressure between the inner and outer tubes;
High-pressure inert gas in the outer tube and annular cavity provides a secondary barrier to prevent natural gas leakage;
When an abnormality occurs and the gas leaks, the outer pipe can protect the surrounding environment, send out an alarm signal and exhaust the gas through the exhaust system
The double-wall pipeline passed the pipeline analysis, taking into account the load of the wave load, acceleration of the ship's motion, vibration of the connected equipment, and the weight and thermal stress of the system.
The scope of technical services includes design, calculation and analysis of double-walled pipelines, and submission of drawings, materials, and technical support in the process.
The scope of production services includes prefabrication, in-field tests and inspections, pickling passivation, installation of out-field tests and inspections, and is approved by the classification society.
规格：DN15 ～ DN550
设计压力：0 ～ 30 bar
设计温度：-50℃ ～ 80℃