Watch how Germans lay pipes—pipe trenching and laying machine
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Burial of agricultural pipelines suitable for plain areas
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HDPE is used in conjunction with pipe trenching machines; this can also be applied to natural gas branch pipelines. In Canada, there are machines capable of digging trenches through rock as well.
It seems that once the mindset opens up, the prospects become very promising
Can HDPE pipes be used in gas pipelines? Currently, it is known that they are used for water pipelines. Are there any standards for this, or has their use only started abroad? ?
Domestic long-distance natural gas pipelines still use rolled sheet pipes; such pipes were used for the pipelines leading to consumers in the past, but now HDPE pipes are used as a substitute.
Materials specifically designed for producing PE and HDPE gas pipes are used; generally, the strength and hardness of regular high-density polyethylene are higher than those of the materials intended for gas pipes. However, for pipes, aging occurs over time, causing a decline in their mechanical and physical properties; the mode of failure shifts from initial ductile failure to brittle failure as a result of aging. Regarding the degradation aging process, the materials specifically designed for gas pipelines age much more slowly than ordinary HDPE. Therefore, MDPE is currently mainly used as a material specific for gas pipelines. The relevant international standards ISO 04437-1997 and GB 15558.1 impose strict performance requirements on materials used for MDPE gas pipes, in order to ensure a service life of 50 years under normal conditions. The raw materials used for HDPE gas pipes are almost all imported, with the main grades being PE100 and PE80. In China, there is no large-scale production of materials specifically designed for PE and HDPE gas pipes; generally, the strength and hardness of ordinary high-density polyethylene are higher than those of the materials intended for gas pipes. However, for pipes, aging occurs over time, causing a decline in their mechanical and physical properties; the mode of failure shifts from initial ductile failure to brittle failure as a result of aging. Regarding the degradation aging process, the materials specifically designed for gas pipelines age much more slowly than ordinary HDPE. Therefore, MDPE is currently mainly used as a material specific for gas pipelines. The relevant international standards ISO 04437-1997 and GB 15558.1 impose strict performance requirements on materials used for MDPE gas pipes, in order to ensure a service life of 50 years under normal conditions.
Is this pipe a regular carbon steel pipe?