The insulation material for the stainless steel water tank in Xi'an, Shaanxi, is a rigid polyurethane foam with a density of 60kg/m3 to 80kg/m3, which is filled to fully seal the gap between the steel pipe and the sleeve, providing certain adhesive strength. This creates a solid, integrated structure among the steel pipe, outer sleeve, and insulation layer. The polyurethane foam for buried insulation pipes exhibits excellent mechanical and thermal insulation properties, typically withstanding temperatures up to 120℃. Through modification or combination with other insulation materials, it can withstand temperatures up to 180℃. Polyurethane jacketed pipes have become a mature advanced technology in some developed countries. The stainless steel water tank in Xi'an, Shaanxi, uses polyurethane foam insulation.

The polyurethane material used in stainless steel water tanks in Xi'an, Shaanxi, features a stable porosity structure that is predominantly closed-cell, offering excellent thermal insulation properties, as well as good resistance to freeze-thaw cycles and sound absorption. The average service life of the rigid foam polyurethane insulation is over 30 years under normal use and maintenance conditions. It ensures that the structure remains undamaged under normal service conditions, even in dry, humid, or electrochemical corrosion environments, as well as from external factors such as insect, fungal, or algal growth, or rodent damage.

Shaanxi Xi'an stainless steel water tanks with polyurethane foam insulation feature:

1. Environmental and Hygienic: Fully enclosed operation of equipment, preventing secondary water source contamination.

2. Comprehensive Protection Features: Equipped with automatic protection functions for overload, short circuit, overvoltage, undervoltage, phase loss, overcurrent, short circuit, and water shortage, etc. Capable of signal alarm, self-check, and fault judgment under abnormal conditions.

3. Low Footprint and Easy Installation: The complete set of equipment consists of only one water supply control cabinet, a non-negative pressure surge tank, and a pump unit, making installation extremely simple and convenient.

4. Extend Equipment Lifespan: Achieves reliable soft start for multiple pump sets, thereby protecting the power grid and pipeline from shock and ensures alternating operation, significantly extending the lifespan of water pumps and motors. The lifespan of the equipment can be extended by over 3 times.

5. Save Investment: Approximately 50% investment savings, no need for reservoirs or rooftop tanks, utilize pressure boosting for water supply, reducing initial equipment investment.

6. High Efficiency and Energy Saving, Low Operation Cost: Fully utilizes the municipal pipeline water pressure, adjusting the pressure as needed without creating a vacuum, which can save 30% to 90% of energy compared to traditional water supply equipment. Water supply can also be maintained during power outages.

7. High intelligence level, easy operation, and labor-saving: The equipment is controlled by an all-in-one intelligent controller, automatically adjusting based on the user's water consumption and the municipal water pressure in the pipeline. It also features a human-machine interface display, allowing customers to visually monitor the equipment's operating status.

Shaanxi Xi'an Stainless Steel Water Tanks: Shaanxi Province is rich in biological resources with remarkable diversity. The Qinling and Bashan Mountains are known as the "gene bank of biology." Their ecological systems, species, and genetic diversity are typical and representative in China and even in East Asia. There are 3,300 species of seed plants, accounting for 12% of the total number of seed plants in China; nearly 800 species of medicinal plants, such as Gastrodia elata, Eucommia ulmoides, bitter almonds, and licorice, hold significant positions nationwide. Jujube, walnuts, and tung oil are traditional export products, while Chinese peach, sea buckthorn, Gymnema sylvestre, and selenium-rich tea have development potential. Weibei is a major producer of green apples in China, with Shaanxi having the largest planting area and yield of apples in the country.

The stainless steel water tanks used in Xi'an, Shaanxi are insulated with polyurethane, also known as "jacket pipes," which are composed of a two-step construction. This consists of a high-density polyethylene outer protective layer, a polyurethane rigid foam plastic pipe, and a steel pipe.

Shaanxi Xi'an Stainless Steel Water Tank with Polyurethane Foam Insulation