Specials welded tee Thermal insulation tee pipe fitting for insulation steel pipe

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100 Meters
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Company Information

Langfang Wanfu Insulation Materials Co., Ltd.

CN Manufacturer, Trading Company
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Quick Details

Place of Origin: China
Brand Name: Wanfu
Model Number: dn50~1600
standard requirem: GB/T29047-2012 CJ/T114-2000
Standard: API, ASTM, GB
Grade of work ste: pipe: 20# or Q235B
Item NO: DN30-DN1600mm
materia: steel pipe,polyurethane foam insulaiton,hdpe outer pipe
Selling Units: Single item
Single package size: 600X30X30 cm
Single gross weight: 20 KG
Package Type: cap to protect the ends of the pipe or as your special requirement.
Package Preview: https://sc02.alicdn.com/kf/HTB1.KIbaL1H3KVjSZFHq6zKppXa8.jpg_640x640.jpg

Advantage of the pre-insulated pipe


1.good insulation properties
2.low heat loss

 heat loss is 25% of the traditional pipe.

4.energy saving

 about 30 yeas move the service life, low cost


has a strong waterproof and corrosive resistance and high mechanical strength


no attached trench ,can be directly buried in the ground or water.




Pre-insulated Pipe Joint on the Construction Site

1.Heat shrinkable belt type sleeve joint

heat shrinkable belt type sleeve joint is made by special import heat shrinkable belt, through the flame heating contraction ,make the tight connection of the HDPE outer protection pipe and the joint sleeve, not only ensure the sealing of joint and water proofing property, and can absorb the axial displacement of the pipe, it requirement of the pipe,it requires simple equipment and instrument and it really convenient and practical for small diameter pipeline.

2.Electric welding type socket connectors

Sleeve joint with electric welding is through special plastic welding equipment to heat the wire embedded in the polyethylene casing, by heating and a certain pressure ,make joint casing and polyethylene outer pipe as a whole system.

Welding tensile strength of the joint is lower than the shell material ,it is stable and reliable ,easy to operate, and can do 100% air test.

We adopt professional electrical control box to make automatic control of heating process, through the control of the different process parameters, optimal melting effect, so as to ensure the quality of welding joint of welding joint and sealing ,and deliver higher axial force.



Installation Method of Pre-insulated Pipe

1.Cold Installation

the temperature of the overall pipeline welding is equal to the temperature of backfilling.

2.Prestress Installation

The temperature of the overall pipeline welding is higher than the temperature of backfilling.


3.Preheat Installation Method

Preheat the pipeline before backfilling, when the pipeline is heated to the preheat temperature, than weld the pipeline and backfill.


4.One-time Compensator Installation Method