Q345D cryogenic pipe for natural gas

Features
1. High strength and toughness: Q345D cryogenic pipe is made of high strength and toughness Q345D material, which can withstand the stress in high pressure and low temperature environments and effectively prevent brittle fracture and deformation of the pipe.
2. Corrosion resistance: Natural gas contains a variety of corrosive substances, such as hydrogen sulfide, carbon dioxide, etc. Q345D low temperature pipe has good corrosion resistance and can effectively prevent pipeline corrosion and perforation.
3. Good welding performance: Q345D low temperature pipe is made of seamless steel pipe and has excellent welding performance, which can meet the welding requirements of long-distance pipelines.
4. Environmental performance: Q345D cryogenic pipe has less impact on the environment during the manufacturing and construction process and meets environmental protection requirements.

Application areas
1. Natural gas transportation: Q345D cryogenic pipe is one of the ideal materials for natural gas transmission pipelines, which can meet the requirements of long distance, large diameter, high pressure and so on.
2. Petrochemical industry: Q345D low temperature pipe can be used in fluid transportation and process pipelines in the petrochemical industry, with excellent corrosion resistance and high temperature strength.
3. Aerospace: Q345D cryogenic tube can be used in liquid rocket engine fuel pipeline systems in the aerospace field. It has high strength, corrosion resistance and oxidation resistance.
4. Medical devices: Q345D cryogenic tubes can be used in high-precision, high-quality medical pipelines such as infusion tubes and hemodialysis tubes in medical device manufacturing.

Production Process
1. Material preparation: Select Q345D material that meets the requirements, cut and pre-process to ensure the surface quality and accuracy of the pipe.
2. Rolling plate: Roll the Q345D material into a cylindrical shape, and perform welding and correction.
3. Welding: Use advanced welding technology to ensure the welding quality and sealing performance of the pipeline.
4. Cold working: Perform cold working on pipes, such as perforation, drawing, etc., to obtain the required pipe diameter and wall thickness.
5. Non-destructive testing: Carry out non-destructive testing to ensure the quality and reliability of the pipeline.
6. Surface treatment: Carry out surface treatment, such as polishing, pickling, etc., to improve the corrosion resistance and service life of the pipeline.
7. Inspection and packaging: Final inspection and packaging of pipelines to ensure product quality and transportation safety.