Polyurethane Insulation Steel Pipe
  • Polyurethane Insulation Steel PipePolyurethane Insulation Steel Pipe
  • Polyurethane Insulation Steel PipePolyurethane Insulation Steel Pipe
  • Polyurethane Insulation Steel PipePolyurethane Insulation Steel Pipe
  • Polyurethane Insulation Steel PipePolyurethane Insulation Steel Pipe
  • Polyurethane Insulation Steel PipePolyurethane Insulation Steel Pipe

Polyurethane Insulation Steel Pipe

You can rest assured to buy Pengfa Polyurethane Insulation Steel Pipe from our factory. T Thermal insulation steel pipe is widely used in liquid gas transmission pipe network, chemical pipe insulation engineering, petroleum, chemical industry, central heating pipe network, air conditioning ventilation pipe, municipal engineering, high temperature prefabricated directly buried thermal insulation pipe is a kind of good thermal insulation performance, safe and reliable, low engineering cost of direct buried thermal insulation pipe. The utility model effectively solves the problems of insulation, sliding lubrication and waterproofing of pipe end of prefabricated directly buried insulation pipe in urban central heating. High temperature prefabricated directly buried insulation pipe not only has the technical and practical performance of traditional trench and overhead pipeline laying, but also has social and economic benefits. It is also a powerful measure of heating and energy saving.

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Product Description

You are welcomed to come to our factory to buy the latest selling, low price, and high-quality Pengfa Polyurethane Insulation Steel Pipe. We look forward to cooperating with you. The insulation is typically made from a high-density polyethylene (HDPE) material, which has good thermal properties and can withstand high temperatures. The outer layer of the insulation is usually protected by a jacket made of either steel or HDPE. 


The spiral shape of the pipe allows it to be easily installed underground, making it a popular choice for pipelines used in oil and gas fields, as well as for water supply systems. Overall, Polyurethane Insulation Steel Pipe are a reliable and efficient choice for transporting fluids in a wide range of industries, including energy, mining, and construction.


Product Parameter (Specification)

Diameter

mm

Diameter

mm

Wall thickness

Kg/m

Single weight

(mpa) Minimum test pressure

A

L210

B

L245

X42

L29

X46

L320

X52

L360

20"

508

5.6

69.38

2.8

3.2

5.8

6.3

7.1

6.4

79.16

3.2

3.7

6.6

7.3

8.2

7.1

87.70

3.5

4.1

7.3

8.1

9.1

7.9

97.43

3.9

4.6

8.1

9.0

10.1

8.7

107.12

4.3

5.0

8.9

9.9

11.1

9.5

116.78

4.7

5.5

9.8

10.8

12.1

10.3

126.41

5.1

6.0

10.6

11.7

13.1

11.1

136.01

5.5

6.4

11.4

12.6

14.2

11.9

145.58

5.9

6.9

12.2

13.5

15.2

12.7

155.12

6.3

7.4

13.1

14.4

16.2

14.3

174.10

7.1

8.3

14.7

16.2

18.2

15.9

192.95

7.9

9.2

16.3

18.0

20.3

24"

609.6

6.4

95.26

2.6

3.1

5.5

6.0

6.8

7.1

105.56

2.9

3.4

6.1

6.7

7.5

7.9

117.30

3.3

3.8

6.8

7.5

8.4

8.7

129.00

3.6

4.2

7.4

8.2

9.2

9.5

140.68

3.9

4.6

8.1

9.0

10.1

10.3

152.32

4.2

4.9

8.8

9.8

11.0

11.1

163.93

4.6

5.3

9.5

10.5

11.8

11.9

175.51

4.9

5.7

10.2

11.2

12.6

12.9

187.06

5.2

6.1

10.9

12.0

13.5

14.3

210.07

5.9

6.9

12.2

13.5

15.2

15.9

232.94

6.6

7.7

13.6

15.0

16.9

30"

762

6.4

111.20

2.3

2.6

4.7

5.2

5.8

7.1

123.24

2.5

2.9

5.2

5.8

6.5

7.9

136.97

2.8

3.3

5.8

6.4

7.2

8.7

150.67

3.1

3.6

6.4

7.0

7.9

9.5

164.34

3.4

3.9

7.0

7.7

8.7

10.3

177.98

3.7

4.3

7.6

8.3

9.4

11.1

191.58

3.9

4.6

8.1

9.0

10.1

11.9

205.15

4.2

4.9

8.7

9.6

10.8

12.7

218.69

4.5

5.3

9.3

10.3

11.6

14.3

245.68

5.1

5.9

10.5

11.6

13.0

15.9

272.54

5.6

6.6

11.7

12.9

14.5

32"

812.8

6.4

127.30

2.0

2.3

4.1

4.5

5.1

7.1

141.10

2.2

2.6

4.6

5.0

5.7

7.9

156.84

2.4

2.9

5.1

5.6

6.3

8.7

172.56

2.7

3.1

5.6

6.2

6.9

9.5

188.24

2.9

3.4

6.1

6.7

7.6

10.3

203.88

3.2

3.7

6.6

7.3

8.2

11.1

219.50

3.4

4.0

7.1

7.9

8.8

11.9

235.09

3.7

4.3

7.6

8.4

9.5

12.7

250.64

3.9

4.6

8.2

9.0

10.1

14.3

281.65

4.4

5.2

9.2

10.1

11.4

15.9

312.54

4.9

5.7

10.2

11.3

12.7

36"

914.4

6.4

143.24

1.8

2.1

3.7

4.0

4.5

7.1

158.79

2.0

2.3

4.1

4.5

5.0

7.9

176.52

2.2

2.5

4.5

5.0

5.6

8.7

194.22

2.4

2.8

5.0

5.5

6.2

9.5

211.90

2.6

3.1

5.4

6.0

6.7

10.3

219.51

2.8

3.3

5.9

6.5

7.3

11.1

247.15

3.1

3.6

6.3

7.0

7.9

11.9

264.72

3.3

3.8

6.8

7.5

8.4

12.7

282.27

3.5

4.1

7.3

8.0

9.0

14.3

317.27

3.9

4.6

8.2

9.0

10.1

15.9

352.14

4.4

5.1

9.1

10.0

11.3

17.5

386.88

4.8

5.6

10.0

11.0

12.4


 

Diameter

mm

Diameter

mm
Wall thickness

Kg/m
Single weight

(mpa) Minimum test pressure

A
L210

B
L245

X42
L290

X46
L320

X52
L360

8.63"

219.1

5.6

29.48

6.4

7.5

11.1

12.3

13.8

6.4

33.57

7.4

8.6

12.7

14

15.8

7.0

36.61

8.1

9.4

13.9

15.3

17.3

7.9

41.14

9.1

10.6

15.7

17.3

19.5

8.2

42.65

9.4

11.0

16.3

18.0

20.2

8.7

45.14

10.0

11.7

17.3

19.1

20.7

10.75"

273.1

5.6

36.94

5.2

6.0

10.1

11.2

12.5

6.4

42.09

5.9

6.9

11.6

12.7

14.3

7.1

46.57

6.6

7.6

12.8

14.1

15.9

7.8

51.03

7.2

8.4

14.1

15.5

17.5

8.7

56.72

8.0

9.4

15.7

17.3

19.5

9.3

60.05

8.6

10.0

16.8

18.5

20.7

12.75"

323.9

5.6

43.96

4.4

5.1

8.5

9.4

10.6

6.4

50.11

5.0

5.8

9.7

10.7

12.71

7.1

55.47

5.5

6.4

10.8

11.9

13.4

7.9

61.56

6.1

7.2

12.0

13.9

14.9

8.4

65.35

6.5

7.6

12.8

14.1

15.9

8.7

67.62

6.8

7.9

13.2

14.6

16.4

9.5

73.65

7.4

8.6

14.5

16.0

17.9

10.3

79.65

8.0

9.3

15.7

17.3

19.5

11.1

85.62

8.6

10.1

16.9

18.6

20.7

12.7

97.46

9.9

11.5

19.3

20.7

20.7

14.3

109.18

11.1

13.0

20.7

20.7

20.7

14"

355.6

5.6

48.33

4.0

4.6

7.8

8.6

9.6

6.4

55.11

4.5

5.3

8.9

9.8

11.0

7.1

61.02

5.0

5.9

9.8

10.9

12.2

7.9

61.74

5.6

6.5

11.0

12.1

13.6

8.7

74.42

6.2

7.2

12.1

13.3

15.0

9.5

81.08

6.7

7.9

13.2

14.5

16.3

10.3

87.71

7.3

8.5

14.3

15.8

17.7

11.1

94.30

7.9

9.2

15.4

17.0

19.11

11.9

100.86

8.4

9.8

16.5

18.2

20.5

12.7

107.39

9.0

10.5

17.6

19.4

20.7

14.3

120.36

10.1

11.8

19.8

20.7

20.7

16"

406.4

5.6

55.35

3.5

4.1

6.8

7.5

8.4

6.4

63.13

4.0

4.6

7.8

8.6

9.6

7.1

69.91

4.4

5.1

8.6

9.5

10.7

7.9

77.63

4.9

5.7

9.6

10.6

11.9

8.7

85.32

5.4

6.3

10.6

11.6

13.1

9.5

92.98

5.9

6.9

11.5

12.7

14.3

10.3

100.61

6.4

7.5

12.5

13.8

15.5

11.1

108.20

6.9

8.0

13.5

14.9

16.7

11.9

115.77

7.4

8.6

14.4

15.9

17.0

12.7

123.30

7.9

9.2

15.4

17.0

19.1

14.3

138.27

8.9

10.3

17.3

19.1

20.7

15.9

153.11

9.9

11.5

19.3

20.7

20.7

18"

457.2

5.6

62.34

3.1

3.6

6.0

6.7

7.5

6.4

71.12

3.5

4.1

6.9

7.6

8.6

7.1

78.77

3.9

4.6

7.7

8.5

9.5

7.9

87.49

4.4

5.1

8.5

9.4

10.6

8.7

96.18

4.8

5.6

9.4

10.4

11.7

9.5

104.84

5.2

6.1

10.2

11.6

12.7

10.3

113.46

5.7

6.6

11.1

12.6

13.8

11.1

122.05

6.1

7.1

12.0

14.2

14.9

11.9

13062

6.6

7.7

12.8

14.2

15.9

12.7

139.15

7.0

8.2

13.7

15.1

17.0

14.3

156.11

7.9

9.2

15.4

17.0

19.2

15.9

172.95

8.8

10.2

17.2

18.9

20.7

 

Diameter

mm
Diameter

mm

Wall thickness

Kg/m
Single weight

(mpa) Minimum test pressure

A

L210

B

L245

X42

L290

X46

L320

X52

L360

42"

1066.8

7.9

196.39

2.0

2.3

4.1

4.5

5.0

8.7

216.11

2.2

2.5

4.5

4.9

5.5

9.5

235.79

2.4

2.7

4.9

5.4

6.1

10.3

255.45

2.6

3.0

5.3

5.8

6.6

11.1

275.07

2.8

3.2

5.7

6.3

7.1

11.9

294.66

3.0

3.4

6.1

6.7

7.6

12.7

314.22

3.2

3.7

6.5

7.2

8.1

14.3

353.24

3.5

4.1

7.3

8.1

9.1

15.9

392.13

3.9

4.6

8.2

9.0

10.1

17.5

430.90

4.3

5.1

9.0

9.9

11.2

48"

1219.2

8.7

259.66

1.8

2.1

3.7

4.1

4.6

9.5

283.35

2.0

2.3

4.1

4.5

5.1

10.3

307.01

2.1

2.5

4.4

4.9

5.5

11.1

330.63

2.3

2.7

4.8

5.2

5.9

11.9

354.23

2.5

2.9

5.1

5.6

6.3

12.7

377.79

2.6

3.1

5.4

6.0

6.8

14.3

424.82

3.0

3.4

6.1

6.8

7.6

15.9

471.73

3.3

3.8

6.8

7.5

8.5

17.5

518.51

3.6

4.2

7.5

8.3

9.3

54"

1371.6

9.5

330.91

1.7

2.0

3.5

3.8

4.3

10.3

358.57

1.8

2.1

3.8

4.2

4.7

11.1

386.20

2.0

2.3

4.1

4.5

5.1

11.9

413.80

2.1

2.5

4.4

4.8

5.4

12.7

441.37

2.3

2.6

4.7

5.1

5.8

14.3

496.41

2.5

3.0

5.2

5.8

6.5

15.9

551.32

2.8

3.3

5.8

6.4

7.2

17.5

606.11

3.1

3.6

6.4

7.1

8.0

60"

1524

9.5

378.70

1.5

1.7

3.0

3.4

3.8

10.3

410.38

1.6

1.9

3.3

3.6

4.1

11.1

442.04

1.7

2.0

3.6

3.9

4.4

11.9

473.66

1.8

2.2

3.8

4.2

4.7

12.7

505.26

2.0

2.3

4.1

4.5

5.1

14.3

568.35

2.2

2.6

4.6

5.1

5.7

15.9

631.31

2.5

2.9

5.1

5.6

6.6

17.5

694.15

2.7

3.2

5.6

6.2

7.0

72"

1828.8

12.7

568.83

1.7

2.0

3.6

4.0

4.5

14.8

639.93

2.0

2.3

4.1

4.5

5.1

15.9

710.91

2.2

2.6

4.5

5.0

5.6

17.5

781.75

2.4

2.8

5.0

5.5

6.2

19.1

852.47

2.6

3.1

5.5

6.0

6.8

80"

2032

14.3

711.52

1.8

2.0

3.7

4.1

4.6

15.9

790.50

2.0

2.3

4.1

4.5

5.1

17.5

869.36

2.2

2.5

4.5

5.0

5.6

19.1

948.09

2.4

2.8

4.9

5.4

6.1

88"

2235.2

14.3

783.10

1.7

2.0

3.5

3.9

4.4

15.9

870.10

1.9

2.2

3.9

4.3

4.9

17.5

956.96

2.1

2.4

4.3

4.8

5.4

19.1

1043.70

2.3

2.6

4.7

5.2

5.8

95"

2413

15.9

939.89

1.8

2.0

3.6

4.0

4.5

17.5

1033.78

2.0

2.2

4.0

4.4

5.0

19.1

1127.54

2.2

2.4

4.4

4.8

5.4


Product Feature And Application

Polyurethane Insulation Steel Pipe is a type of pipe that is widely used in industrial and commercial applications. It is primarily used for the transportation of fluids, such as oil, gas, and water, in a variety of industries, including oil and gas, chemical processing, and water treatment.

Production process of polyurethane foam insulation steel pipe

 

The Polyurethane Insulation Steel Pipe is divided into four production processes: two-step method, one-step method, spraying and winding, and steel sleeve steel:

(1) "Two-step" process

The two-step method is also called "pipe-in-pipe method", and this process is the most widely used. In this method, polyethylene particles are extruded from an extruder to obtain a high-density polyethylene outer protection tube, which is then placed on the working tube, supported by a bracket, and finally foamed by a foaming machine to form a trinity finished polyurethane insulation Tube.

 

(2) "One-step" process

The "one-step" process is based on the transformation of the existing three-layer PE anti-corrosion production line with mature technology, so that the polyurethane insulation layer and the polyethylene outer protection tube are formed at one time. The key process is the extrusion of the polyethylene outer protection pipe and the pouring of the insulation layer. The "one-step method" of polyurethane thermal Polyurethane Insulation Steel Pipe is driven by V-shaped rollers, and the steel pipe undergoes surface pretreatment, intermediate frequency heating, epoxy spraying, polyethylene outer protection extrusion, polyurethane insulation layer casting, corona polarization treatment, pipe end treatment, etc. process. The V-shaped roller drive is different from the traditional roller drive. The steel pipe moves linearly with the roller instead of rotating by itself.

 

(3) "Spray winding" process

The "spraying and winding" process is a new type of process, which is mainly divided into steel pipe surface pretreatment, polyurethane foam spraying and polyethylene outer protection winding. The "spraying and winding" process is suitable for various pipe diameters, especially for the production of large-diameter polyurethane Polyurethane Insulation Steel Pipe. There is no need for foaming molds in the production process, which saves equipment investment and reduces labor intensity. In addition, the density of spray-molded foam is more uniform and the internal stress is small, which also reduces the thickness of the outer protective tube and saves costs.

 

(4) Steel jacket steel insulation production process

The Polyurethane Insulation Steel Pipe generally includes an inner pipe, an outer pipe and an inner support frame. The outer wall of the inner pipe and the inner wall of the outer pipe are fixedly connected by the inner support frame, and the insulation layer is filled between the inner pipe and the outer pipe. , the outer wall of the inner tube is covered with the insulation layer, and the inner bracket is welded to the outer wall of the inner tube, the inner tube is inserted into the outer tube from one end port of the outer tube, and the inner bracket near the end of the outer tube is connected to the inner tube of the outer tube. The wall can be welded.

 

Polyurethane Insulation Steel Pipe have the advantages of waterproof and anti-corrosion, strong frost resistance, small thermal conductivity, energy saving and environmental protection, and are often used in municipal heating (refrigeration), oil and gas, hot springs, geothermal, etc. through buried or overhead laying. The transportation of media plays an important role especially in urban heating pipelines.

 

The composition of polyurethane insulation steel pipe:

The first layer: working steel pipe layer

According to the design and customer requirements, seamless steel pipes, spiral steel pipes and straight seam steel pipes are generally used. After the surface of the steel pipe is treated by the advanced shot blasting derusting process, the derusting of the steel pipe can reach the Sa2 level in the GB8923-1988 standard, and the surface roughness can reach R=12.5 microns in the 0B6060.588 standard.

 

The second layer: polyurethane insulation house

It is formed by injecting rigid polyurethane foam stock solution into the cavity formed between the steel pipe and the outer sheath with a high-pressure foaming machine, which is commonly known as "pipe-in-pipe foaming".

 

The third layer: high-density polyethylene protective layer

Prefabricated black or yellow polyethylene plastic pipes with a certain wall thickness. Its function is to protect the polyurethane insulation layer from being damaged by mechanical hard objects, and the second is to prevent corrosion and waterproof.

 

The Polyurethane Insulation Steel Pipe is generally used as a transport medium, and is composed of an outer protection steel pipe, a steel pipe anticorrosion, an insulation layer and an inner working steel pipe. The steel-sheathed steel insulation pipe is suitable for transporting steam or other media below 2.5MPa and 350 degrees Celsius. Most of this product uses a spiral pipe as the outer protective layer. It has the characteristics of high strength, not easy to damage, simple construction and maintenance, and long service life.


Product Details

 




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