Pre-insulated Bonded Pipes

Tianjin Wanlei Steel Pipe Co., Ltd. is one of the leading manufacturers and suppliers of pre-insulated bonded pipes in China, featured by quality products and low price. If you're going to wholesale durable pre-insulated bonded pipes made in China, welcome to get pricelist and free sample from our factory.

 

Pre-insulated bonded pipes

Application Temperature: from -200℃ to +315℃

 

Application:

District heating and cooling systems

Cogeneration systems

Transport of steam systems (aboveground and underground)

Geothermal energy

Greenhouse

Marine

Transport of cold gases (LNG, LPG, LEG etc.)

Frost protection for domestic water systems and fire fighting systems

Solar energy systems

Transport of liquids and gases (transport of all other chemical fluids)

 

Standard:

EN253 Pre-insulated bonded pipes

EN448 Pre-insulated bonded fittings

EN488 Pre-insulated bonded valves

EN489 Joint assembly for pre-insulated bonded pipes

 

STEEL PIPE Type:

ERW, SAW, Seamless

 

 

Parameters of Pre-insulated bonded coating:

 

Density	7850 kg/m3
Tensile strength	>350MPa
Yield strength	>235MPa
Modulus of elasticity	2.1 x 105MPa
Coefficient of expansion	1.2 x 10 -5K-1
Thermal conductivity	76W/mK

 

Polyurethane rigid foam (PUR)

Thermal conductivity (at 50℃)	<0.028 W/mK
Density	≥60kg/m3
Average size of the cells in radial direction	<0.5mm
Closed cell	>%88
Water absorption at elevated temperature	%10<volume
Compressive strength at 10% relative deformation	≥0.3MPa
Axial shear strength	≥0.12MPa
Tangential shear strength	≥0.20MPa

 

Thermal life at continuous operating temperature:

120℃  at least 30 years

115℃  at least 50 years

<115℃  over 50 years

 

Our services:

Pre-sale service

WANLEI offers to customers the most preferred systems having less investment and operational cost by its experience and knowledge in pipe sector.

 

After-sale support

Full support is provided by the company’s team of customer services personnel whose primary function is to provide any planning and technical requirement and technical training service of our customers.

 

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