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{"title":"En 10025 Underground Direct Buried Thermal Insulation Pipes Dn150","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/ac\/9e\/f9e7dac9734757df9ba0b1cd78eb-200x200-1\/en_10025_underground_direct_buried_thermal_insulation_pipes_dn150.jpg","attrs":{"Brand Name":"Ze Xu","Model Number":"DN150","Certification":"CE API","Place of Origin":"Cangzhou, Hebei"}}
{"title":"Direct Buried Steel Dn325 Polyurethane Foam Pipe For Hot And Chilled Water","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/2a\/c7\/da0527364db93ecaa5fce93d37b3-200x200-1\/direct_buried_steel_dn325_polyurethane_foam_pipe_for_hot_and_chilled_water.jpg","attrs":{"Brand Name":"Ze Xu","Model Number":"DN325","Certification":"CE API","Place of Origin":"Cangzhou, China"}}
{"title":"Carbon Steel DN600 Thermal Insulation Pipes , Heat Resistance Pipe","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/35\/8a\/158e61fc2968952beae2f11ca35e-200x200-1\/carbon_steel_dn600_thermal_insulation_pipes_2c_heat_resistance_pipe.jpg","attrs":{"Brand Name":"zexu","Model Number":"DN50-DN600","Certification":"CE API ISO9001","Place of Origin":"Hebei china"}}
{"title":"Hot Water And Heating Network Dn25 Thermal Insulation Tube","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/61\/a8\/c828d2a9ab74ff94f81685bcebaa-200x200-1\/hot_water_and_heating_network_dn25_thermal_insulation_tube.jpg","attrs":{"Brand Name":"Ze Xu","Model Number":"1\/2\"-30\"","Certification":"CE API","Place of Origin":"Cangzhou, China"}}
{"title":"Underground Polypropylene Thermal Insulation Tube For Hot Water And Heating","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/9b\/88\/927e8f18388e09722c9a7abf4726-200x200-1\/underground_polypropylene_thermal_insulation_tube_for_hot_water_and_heating_network.jpg","attrs":{"Brand Name":"Ze Xu","Model Number":"1\/2\"-30\"","Certification":"CE API","Place of Origin":"Cangzhou, China"}}
{"title":"High Density Polyurethane Thermal Insulation Pipes","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/a0\/d2\/f5472ea68601337b2e6cd55cdd7a-200x200-1\/high_density_polyurethane_thermal_insulation_pipes.jpg","attrs":{"Brand Name":"Ze Xu","Model Number":"pre insulated steel pipe","Certification":"CE API","Place of Origin":"Cangzhou, China"}}
Shanghai Jin Fei, Qilu petrochemical,Tianjin zhongsha petrochemical(level 100)
Application
1. district heating 2. district cooling 3. crude oil transportation
4.cogeneration project
Laying mode
Mainly used for direct buried, and can be used in trenches.
Specification
DN25-1800mm(1 inch-72 inch)
Medium temperature
Less than 120℃( accidental peak 140 ℃)
Medium pressure
Less than 2.5MPa
Advantages
1. Unique trinity structure 2. Low thermal conductivity, small the heat loss 3. Water-proof 4. Anti-corrosive
Related products
1. The pre-insulated pipe with alarming line 2. Joint materials 3. Insulation fittings
Main Indexs of Pre-insulated Pipe
Product Name
Product Indexes
Reference Standard
Unit
Standard Requirement
Finished product
Steel pipe without thermal insulation layer
CJ/T114-4.4.1
mm
150-250
Increasing rate of HDPE outer protection pipe
CJ/T114-4.4.2
%
≤ 2
Axis eccentricity
CJ/T114-4.4.3
mm
see clause 4.4.3
Expectation of life
CJ/T114-4.4.4.1
year
120℃ 30 years
Shear strength(170℃,1450h after aging)
CJ/T114-4.4.4.2
MPa
(23±2℃)>0.12
(140±2℃) >0.08
Shock resistance
CJ/T114-4.4.5
3kg/2m
see clause 4.4.5
Resistance value between alarm line
CJ/T114-4.4.6
MΩ
more than 20MΩ
Outer protection pipe
Density
CJ/T114-4.2.3.1
kg/m3
≥940
Elongation at break
CJ/T114-4.2.3.4
%
≥350
Tensile yield stength
CJ/T114-4.2.3.4
MPa
≥19
Longitudinal shrinkage rate
CJ/T114-4.2.3.5
%
≤3
Long term Mechanical properties
CJ/T114-4.2.3.6
80℃ 4.0MPa
>1500h free from damage
The difference of the melt flow rate
CJ/T114-4.2.3.2
g/10min
≤0.5
Carbon Black content
CJ/T114-4.2.3.1
%
2.5±0.5
Polyurethane insulation layer
Density
CJ/T114-4.3.2
kg/m3
≥60
Average pore size
CJ/T114-4.3.1
mm
≤0.5
Percentage of close area
CJ/T114-4.3.1
%
≥88
Compressive strength
CJ/T114-4.3.3
MPa
≥0.3
Water absorption
CJ/T114-4.3.4
%
Immersion in boiling water 90 minutes, bubble water absorption should be not more than 10%
Coefficient of thermal conductivity before aging
CJ/T114-4.3.5
w/(m.k)
≤0.033
Cavity
CJ/T114-4.3.1
≤1/3 the thickness of insulation layer
Working steel pipe
Seamless steel pipe(≤DN150)
GB8163
20#
Up to standards
Spiral steel pipe (≥DN200)
GB/T9711 or SY/T5037
Q235B
Up to standards
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2016
Total Annual:
10000000-50000000
Employee Number:
>100
Ecer Certification：
Active Member
Hebei Zexu Pipeline Manufacturing Co., Ltd. has a complete production and operation management system and is one of the first companies in the industry to pass the ISO9001 quality management system certification, HSE environment, and occupational health and safety management sys... Hebei Zexu Pipeline Manufacturing Co., Ltd. has a complete production and operation management system and is one of the first companies in the industry to pass the ISO9001 quality management system certification, HSE environment, and occupational health and safety management sys...
