supplied by the qualified company Anshan Iron and Steel Group Corporation
produce steel pipe by ourself, comfirmed with the standard of GB/T8163 and GB/T9711
polyurethane insulation layer
supplied by qualifed company of Bayer Jinling,and the raw material
is fluoride-free foam
HDPE outer protection pipe
the raw material is virgin granulate supplied by
Shanghai Jin Fei Petroleum Chemical Industry Co.,Ltd and Tianjin Petrochemical Co.,Ltd
Application of the insulation pipe
be widely usd in urban centralized heat and cold supply,
petroleum,chemical and other anti-corrosion and insulation industrial field,water,
oil,gas transportation and so on.
Technology applied in the insulation pipe
Leakage alarm line
Medium teperature: 50-1400°c
Working pressure: 2.5Mpa
1) urban centralized heat supply
2) warm room
3) coal mine
5) chemical and other anti-corrosion insulation field
1) direct bury
2) built on stilts
1)Advanced Corona treatment
3)Leakage alarm line
1)good insulation properties ,low heat loss (the 25% of traditional pipes),
3)waterproof and corrosion resisdence
4)no trench,be directly buried in ground or water
1) HDPE outer protection pipe
2)polyurethane insulation layer
3)inner steel pipe
Main Indexes of Polyurethane insulation layer
Percentage of close area
Immesion in boiling water 90 minute,bubble water absorption should be not more than 10%
Steel pipe without thermal insulation
Increasing rate of HDPE outer protection pipe
Expectation of life
120℃ 30 year
(170℃,1450h after aging)
Resistance value between alarm line
Outer protection pipe
Elongation at break
Tensile yield strength
Longitudinal shrinkage rate
Long-term mechanical properties
80℃ 4.0 MPa
>1500hfree from damage
The difference of the melt flow rate
Carbon Black Content
Average pore size
Percentage of close area
Immersion in boiling water 90 minutes
bubble water absorptionshould be not morethan 10%
Coefficient of thermal conductivity before aging
Polyurethane insulation layer
≤1/3the thickness of insulation
Working steel pipe
Seamless steel pipe(≤DN150)
Up to standards
Spiral steel pipe(≥DN200)
GB/T9711 OR SY/T5037
Up to standards
Specification of pre-insulated Pipe
steel pipe (mm)
Thickness of insulation layer
Our company was established in Jan.1995, specializing in manaufaturing pipelines for 20 years .Our technique and service has reached the first level in China.
We have participated in formulating three sets national standards (GB/T 28638-2012,GB/T29046-2012,GB/T 29047-2012),We have gained ISO 9001 International quality Management system ISO14001 Environ ment Management system,GB/T28001 Occupation Health Safety Management System.
Capacity of our company
owns 7 lines of polyurethane insulation pipe
owns 7 lines of polyurethane insulation pipe production line,which can produce 3000km of polyurethane pre-babricated direct buried insulation pipe from DN30-DN1600 mm annually
owns 2 production line of PE anti-corrosive pipeline
owns 2 production line of PE anti-corrosive pipeline which can manufacture 3pe ,2pe or FBE anti-corrosive pipe with inner and outer coating from DN150 to DN 1200 mm as customer's request annually production capacity reaching 1000km
owns 3production line of steel steam pipe
owns 3production line of steel steam pipe which can annually produce kinds of steel insulation pipe from DN 30 to DN 1200mm 1000km
owns 9 production lines of lines of HDPE outer protection pipe
owns 9 production lines of lines of HDPE outer protection pipe which can deal with kinds of HDPE outer protection pipes 5000 km annually ,diameter ranging from DN 90 to DN 1800 mm
owns 3 large diameter spiral steel pipe production lines
owns 3 large diameter spiral steel pipe production lines,which can annually manufacture kinds of spiral steel pipe diameterd from 219 mm to 2054mm
We have a professional worker team to produce any kinds of middle and superior quality thermal insulation pipe sand pipe fittings.
Please feel free to contact us any time if you have any question.
We will provide you the most intimate and professional service
We are a manufacturer which has more than 2 0 years' history.
2: Where is your manufacturer? How to visit it?
Our factory located in Yutian Economic Development Zone ,TangShan , China. A bout 1.5 hours drive time to Beijing and TianJin airport . Mainly producing pre-insulated pipes, HDPE outer protection pipe and 3PE anti-corrosive pipe.
You can take a plane to Beijing or Tianjin .then we could pick up you at the airport .
3: How do we control our products' quality?
We have professional quality control workers and quality inspection center(CNAS lab) to control the entire production quality.
4: How do you transport these products?
We use straps to hoist pre-insulated pipes, it can avoid no damage to our products, no hooks for lifting pipe directly. During the handling process, collision, tossing and more ground drag scrolling are strictly forbidden.
In the process of long distance transport, the pipes should be fixed, and not damage outer protecting pipes and insulating layers.
5: Can I customize some other sizes of products?
Yes! We can according to the customer's request. If you have any other questions, please don't hesitate, contact us.