Properties of FRP Snow-Melting Pipes
Our FRP pipes (continuous pultrusion moldings) were used to replace eroded water pipes for snow-melting equipment on the Joetsu Sinkansen train line.
FRP Snow-Melting Pipes
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- Maximum Working Pressure of 1.0MPa
Designed to carry rainwater as well as river, spring, and ground water (from 4°C to 20°C) for melting snow. The FRP pipes can withstand maximum water pressures of 1.0MPa.
- Pipes Range From 100A to 300A
We have a range of five types of pipe: 100A, 150A, 200A, 250A, and 300A. Moreover, the outside diameters match the sizes of steel pipes, thus joining products for steel pipes can be used.
- 11m Product Length Reproduced
As the existing pipes were laid out at 11m intervals, we molded our FRP pipes in 11m sections so as to keep the numbers of joints the same.
- Light and Easy to Handle
The heaviest pipe (11 m length of the 300A type) weighs only 180 kg which means workers can adjust positions of the pipes by hand during installation. Pipes are installed by hooking them onto brackets in the pit (see photograph below).
- Linear Expansion Coefficient is Equivalent to Steel Pipes
A low linear expansion coefficient, equivalent to steel pipes, means that lengthening is not an issue, as it is with polyethylene pipes.
- Minimal Deflection
The reinforcing components of the FRP pipe, the glass fibers, are oriented axially, so there is little deflection and enduring strength. Attachment of adjacent pipes are also of a high standard.
- Easy On-Site Adjustments
Pipes can be relatively easily cut using a hand grinder with an FRP cutter, and as our pipes are made using continuous pultrusion, the surface is smooth and the diameter is uniform. This means that cut sections can be directly fitted with a joint without any surface adjustments. All that is needed is some light beveling to prevent snagging with the joint, with no need for painting or any further treatment.
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Sprinkler Parts
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Snow-Melting in Progress
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Installing Water Pipes
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