Product structure:

External sliding steam insulation pipe and internal sliding steam insulation pipe are used in China. The outer sliding structure of steel sleeve is more reliable than the inner sliding structure in design theory, the force analysis is simple, the internal air layer is easy to set up, and the moisture drainage is better. The outer sliding structure is basically adopted in foreign countries, which has been gradually recognized by everyone in China.

Product introduction:

"Steel sleeve steel outer sliding prefabricated directly buried steam insulation pipe" is mainly used in urban central heating, industrial heat source pipeline and other fields. It can be used to transport steam medium with operating temperature not higher than 350 ℃ and pressure not higher than 1.6Mpa, and buried underground depth of 1-2m. It has the characteristics of good heat preservation effect, small occupied area, good waterproof effect and long service life.

The outer side of the working steel pipe (core pipe) is coated with the non-polar zinc-rich primer anti-corrosion layer, and the working steel pipe is protected by electrochemical anti-corrosion method to extend the service life.

The thermal insulation material adopts centrifugal glass wool and multi-layer wrapping to effectively reduce heat loss; the aluminum foil reflective layer is added to the thermal insulation layer to further reduce heat loss by using the radiation reflection principle to ensure that the temperature of the outer sleeve is lower than 50 ℃.

The flexible sliding steel frame form ensures the concentricity between the working steel pipe and the outer steel pipe, which can ensure the free sliding of the working steel pipe. A hard insulation ring is arranged between the sliding steel frame and the working steel pipe to prevent the generation of thermal bridges.

An air layer is arranged between the thermal insulation material and the outer jacket steel pipe, which can be used as a gas flow channel, and a moisture drainage pipe is arranged near the fixed bracket, which can discharge moisture in the thermal insulation layer through the moisture drainage pipe during the operation of the pipeline.

The jacket steel pipe forms a closed system, which effectively solves the difficulty of waterproof and anti-leakage. The anti-corrosion layer is processed on the outside of the outer steel pipe to effectively solve the problem of buried corrosion of the outer steel pipe.

Product advantages:

1, low heat consumption, good insulation effect;

2. Strong anti-corrosion ability, high anti-corrosion layer strength, not easy to damage;

3, waterproof, leak-proof, impermeability, pressure resistance, good sealing performance, high mechanical strength;

4, high temperature and high pressure, good stability, suitable for medium temperature 350 ℃, pressure 1.6Mpa;

5, long service life, up to 25 years life.

Production capacity:

(1) There are 10 polyurethane prefabricated directly buried insulation pipe production lines, with an annual production DN20-DN1600mm of 4000km of polyurethane prefabricated directly buried insulation pipes;

(2) The annual production of DN50 ~ DN1600mm urethane insulation pipeline leakage monitoring system products 2000km;

(3) There are 6 production lines of polyurethane sprayed polyethylene winding prefabricated direct buried insulation pipes, with an annual production DN300mm-DN1600mm of 4500km of polyurethane sprayed polyethylene winding prefabricated direct buried insulation pipes;

(4) "one-step" process polyurethane prefabricated buried insulation pipe production line 2, the production of DN25-DN400mm one-step polyurethane insulation pipe 3000km/year;

(5) 4 prefabricated overhead polyurethane insulation pipe production lines, producing DN25-DN1600mm prefabricated overhead polyurethane insulation pipe 3000km/year;

(6) Polyurethane prefabricated direct buried thermal insulation composite plastic pipe production line 3, can produce DN20-DN400mm polyurethane prefabricated direct buried thermal insulation composite plastic pipe 1500km/year;

(7) Glass fiber reinforced plastic outer protective layer polyurethane prefabricated direct buried insulation pipe production line, can produce DN20-DN1600mm glass fiber reinforced plastic outer protective layer polyurethane prefabricated direct buried insulation pipe 400km/year;

(8) annual production of DN200-DN1200mmFBE anti-corrosion polyurethane insulation pipe 1000Km.

(9) There are 9 high-density polyethylene outer protection pipe production lines, with an annual production of φ90-2000mm polyethylene outer protection pipe of 60000 tons/year.

(10) The annual production of DN25-DN1000mm steel sheath steel steam insulation pipe 1000km;

(11) annual production of DN80-DN 1600mm pe anti-corrosion pipe 1000km;

(12) annual production of DN200-DN2000mmFBE anti-corrosion pipe 1000km;

(13) Annual production and DN20-DN1600mm of 30000 polyurethane prefabricated directly buried thermal insulation pipe fittings (elbows, tees, reducer pipes, fixed joints, etc.);

(14) 150000 DN200-DN1600mm polyethylene electric hot melt sleeves can be produced annually; (15)φ529-φ2054mm spiral steel pipe 100000 tons;

Specifications: