Hello Mahesh. Im from Canada ...
Published by J D
Hello Mahesh. Im from Canada , I live in the northern part of the country. we see -45c weather at times in the winter on average its about -25c . We burry all our lines (HDPE or carbon Steel) 1.4 to 2 .0 meters below the frost line. so our the total depth is typically 2.5 to 3 meters deep trench. Frost can easily hit 2 meters deep in high pass Mountain ranges. In areas where you are unable to burry any lines , you will need to run glycol tracing for the length of line required heating and covered with aluminum insulated cladding , its
Expensive
email me directly to go over your project.
Regards
Dave