Can frozen water pipes be buried directly in the ground?
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Water temperature: 15 degrees, material: 304. Question: 1. Can it be buried directly in the ground? Should we use a duct trench (it’s a bit troublesome)? 2. Does the stainless steel pipe need anti-corrosion treatment after being buried?
Neither of the two options is suitable for this material. Why is 304 chosen for water at 15℃? Generally, chilled water is a salt solution that is somewhat corrosive; therefore, stainless steel is sometimes used as the material of choice.
For water at this temperature, ethylene glycol is used; 304 material is more than sufficient. It must be difficult to insulate directly underground; I haven’t encountered such a situation before.
Direct burial presents the problem of heat loss
If burial is inevitable, insulation can be applied and a casing can be added on the outside.
How to make a sleeve? Split a pipe in half and clamp it outside the insulation layer?